Spinach (bash script)

Hello,
The other day I was talking in the IRC channel and mentioned a little script I wrote to download packages from the AUR. Somebody wondered how I would update packages... I hadn't thought that far into the future. However, now I have. I whipped up a little bash script. It does only the basics, but I was wondering if somebody could check it over and see if I'm doing anything horrendous. Sorry, the tabbing is messed up in a few places.
Script: http://floft.net/uploads/spinach/spinach (also in the AUR)
Description: http://floft.net/wiki/Scripts.html
As for the name, I was going to name it "tower" since it's amazingly similar to "cower," but I didn't want to cause any confusion. Thus, I named it after a wonderful food.
Note: The goal was to see how small I could make a functional AUR helper... I know there's a lot of perfectly good ones already.
Garrett
Last edited by Floft (2012-06-28 17:44:30)

Odd that you would use both curl and wget. curl proves to be far more useful in the long run, doing everything that wget does (and more). Neat idea though. I've toyed with minimalist bash-based AUR helpers, as well as wrapping cower.

Similar Messages

Sending email using bash script

Hello:
I am working on writing a bash script to notify one or more users by email of certain events. Run from the Terminal command line, and having the script "echo" text of (what would be) a form letter with in-line variable expansion (i.e., ${VARIABLE}), all seems to work as anticipated. Eventually, I want cron to launch this shell script, and send an email to an "on-subnet" user (I have postfix enabled on my Mac, and there are multiple local user accounts).
I found some stuff on the web about sending mail from bash scripts, and so I made a small little test script, that reads like this:
#!/bin/bash
VARIABLE[1]="The 12,345 quick brown foxes "
VARIABLE[2]="jumped over the 67,890 lazy dogs."
mail -s "a test email" jv << EOF
This is a test:
${VARIABLE[1]}
${VARIABLE[2]}
This is the last line of the test message.
EOF
echo "script completed"
It worked... almost... It sent a local email to my postfix mail account that read like this:
This is a test:
The 12,345 quick brown foxes
jumped over the 67,890 lazy dogs.
This is the last line of the test message.
EOF
echo "script completed"
So, I have two questions. First, the easy one (I hope):
How do I delimit the end of the text, that I want to be the message body of the email, from portions of the script that follow said email text?
Next question is a little more involved. You know how, in Mail.app, if you go to Mail Preferences>Accounts>Account Information, you can put multiple email addresses, comma-delimited, in the "Email Address" field? So, if a person entered "[email protected], [email protected], [email protected]" in this field, then, even though (s)he may be at home, and using their home ISP's mail server, (s)he could send an email apparently from either their home, work, or school email address. Of course, the mail headers clearly would show it came from and through their home machine and home ISP, but it would be displayed in the recipient's Mail client viewer as having come from one of [email protected], [email protected], or [email protected].
I'd like to do something similar here, whereby the email (that is being sent to one or more local users' postfix account on my computer) would apparently be sent from "watchdog@localhost" rather than from "jv@localhost" like it seems to do by default. Whatever account the script is run from (or presumbably, whose cron tab is launching the script) is what the "From" address is set to.
I'd rather not create an additional mail account, because I am using Mac OS X built-in accounts for the postfix mailboxes (I don't want to have to maintain a plaintext username:password file in postfix, and I don't want to create an additional user account on the computer).
So, is there a way to specify an alternate "From" username when invoking the mail -s ${SUBJECT} ${RECIPIENT} command in a bash script? Or is there a different, alternate mail command that will let me do so? (please include a description of syntax and how I'd package the above message text for the alternate method).
Thanks in advance, all!

Hi j.v.,
The > after EOF is just a typo (or may be added by the Discussion ?) and you must delete it; other > are prompts from the interactive shell. Andy's post shows an interactive use of shell, not a shell script (note the shell prompt % in front of the commands). A typical use of here document may look like
command <<ENDOFDATA
ENDOFDATA
There must be no spaces before and after ENDOFDATA. The word ENDOFDATA can be EOF or any other string which is guaranteed not to appear in the text (the .... in the example above).
You can modify the From: header by using sendmail command (postfix has it as a compatibility interface):
/usr/sbin/sendmail -t <<EndOfMessage
Subject: test mail
To: jv
From: watchdog
This is a test:
${VARIABLE[1]}
${VARIABLE[2]}
This is the last line of the test message.
EndOfMessage
There must be a blank line between the headers and the mail body.
I assume that you send these mails only to users on your local Mac. Please do not send mails to remote users by using the sendmail command unless you know what you are doing completely.
PowerMac G4 Mac OS X (10.4.5)

[SOLVED] problem with spaces and ls command in bash script

I am going mad with a bash script I am trying to finish. The ls command is driving me mad with spaces in path names. This is the portion of my script that is giving me trouble:
HOMEDIR="/home/panos/Web Site"
for file in $(find "$HOMEDIR" -type f)
do
if [ "$(dateDiff -d $(ls -lh "$file" | awk '{ print $6 }') "$(date +%F)")" -gt 30 ];
then echo -e "File $file is $(dateDiff -d $(ls -lh "$file" | awk '{ print $6 }') "$(date +%F)") old\r" >> /home/panos/scripts/temp;
fi
done
The dateDiff() function is defined earlier and the script works fine when I change the HOMEDIR variable to a path where there are no spaces in directory and file names. I have isolated the problem to the ls command, so a simpler code sample that also doesn't work correctly with path names with spaces is this:
#!/bin/bash
HOMEDIR="/home/panos/test dir"
for file in $(find "$HOMEDIR" -type f)
do
ls -lh "$file"
done
TIA
Last edited by panosk (2009-11-08 21:55:31)

oops, brain fart. *flushes with embarrassment*
-- Edit --
BTW, for this kind of thing, I usually do something like:
find "$HOMEDIR" -type f | while read file ; do something with "$file" ; done
Or put those in an array:
IFS=$'\n' ; files=($(find "$HOMEDIR" -type f)) ; unset IFS
for file in "${files[@]}" ; do something with "$file" ; done
The later method is useful when elements of "${files[@]}" will be used multiple times across the script.
Last edited by lolilolicon (2009-11-09 08:13:07)

Can't get conky-cli and bash scripts to both display in dwm statusbar!

I'm trying to configure my dwm status bar to display some simple information using conky-cli and bash scripts. At first I tried just letting conky run the bash scripts (for network and volume state), but this increased my cpu usage by about 5%, which is significant considering I normally have 1-3% usage when idle. Also, I wanted to keep conky because it makes the display of certain information easy, such as cpu & RAM usage.
The problem is I'm having trouble getting both to display side by side. Here are the relevant parts of my .xinitrc:
network(){
iwconfig wlan0 2>&1 | grep -q no\ wireless\ extensions\. && {
echo wired
exit 0
essid=`iwconfig wlan0 | awk -F '"' '/ESSID/ {print $2}'`
stngth=`iwconfig wlan0 | awk -F '=' '/Quality/ {print $2}' | cut -d '/' -f 1`
bars=`expr $stngth / 10`
case $bars in
0) bar='[-------]' ;;
1) bar='[#------]' ;;
2) bar='[##-----]' ;;
3) bar='[###----]' ;;
4) bar='[####---]' ;;
5) bar='[#####--]' ;;
6) bar='[######-]' ;;
7) bar='[#######]' ;;
*) bar='[--!!!--]' ;;
esac
echo $essid$bar
exit 0
volume(){
vol=$(amixer get Master | awk -F'[]%[]' '/%/ {if ($7 == "off") { print "MM" } else { print $2 }}' | head -n 1)
echo Vol: $vol%
exit 0
conky | while true; read line; do xsetroot -name "`$line` `volume` `network` `date '+%a %m-%d-%Y %I:%M%p'`"; done &
exec dwm
(let me know if it would help to post any other files)
For some reason when I run this I only get the network/volume scripts and date running, updating every second (I think). The conky line just doesn't show up. I don't know what could be wrong, since I didn't see any error messages.
An even better solution would be to just have shell scripts to display CPU and MEM usage. I have a dual-core cpu, cpu0 and cpu1. I'd like to see both percentages if possible, or at least a percentage that is an accurate average of the two or something. In conky-cli I have something that shows:
cpu0/1: xx% xx%
Also, seeing RAM usage would help a lot. In conky it shows:
mem: xx% (xxxMB)
These are the ways I would like to have bash scripts show them, if possible, but I have zero skill in bash programming. I made this an option in case it's easier/cleaner/less resource hungry than a conky solution. Personally, if they're about the same in these aspects, I would prefer something with conky and the shell scripts because conky is so extensible, yet it's only flaw is executing scripts with minimal resource usage.
Help?

Thanks. I was thinking of using load average to save a few characters, but I didn't quite understand the numbers. I'll try that once I get to my Linux box, but could you please explain or post a link to something that explains load average (what's low, high, normal, etc.)?
EDIT: I found a website that explains loadavg. I now have my dwm status bar displaying it perfectly (yay!). Now I just need to add a few more things like battery status, etc. and I might be done. I'll probably post here if I have more questions, though.
Thanks for your help!
Last edited by Allamgir (2009-07-18 14:41:11)

What do you think of my Bash Script? What about the error checking?

Well what do you think of this Bash script
It works
I gave it some problems (i.e. unpluged the ethernet, messed up the URL's, uninstaled some programs...) to see if would report errors and stop or just keep going... But it did
I just kind of thought up a way to do some error checking with the commands that I know.....
What is a better way to do error checking?
What do you think I should add/Do to this script?
#!/bin/bash
# Shell script to make a USB Tumb Drive for Flashing BIOS on a Lenovo Ideapad Y510.
# This script needs to be owned and run as ROOT with the "sudo command"
# i.e. sudo usbbiosflasher
# If you have anyideas send me a PM on ubuntufourms.org my user name is HunterThomson
# Name/Rename this script usbbiosflasher and save it to the ~/home directory.
# Then run the command- chown root:root usbbiosflasher
# Then run the command- chmod 755 usbbiosflasher
# Then copy the script to the directory /usr/bin.
# Run this comand to do that- sudo cp ~/usbbiosflasher /usr/bin
# You also must have the program "mbr" installed
# You can install the mbr program by running this comand in the shell on Ubuntu
# sudo apt-get install mbr
# In Arch Linux you have to get it from Aur
# First you will need to know a few things...
# You will also need to know the Mount Point i.e. /media/disk and the /dev path i.e. /dev/sdb1.
# You can find these by using the df -T comand.
# Run df -T in the shell. Then plug in the USB Thumb Drive and run the df -T comand agin.
# The new listing is the USB Thumb Dirve.
# Also check to make sure the File System tipe is vFAT or FAT16 or FAT32.
# If it is not use gparted to format it to FAT32.
# I am farly certen that all USB Thumb drives come formated with FAT file system out of the BOX.
# You may want to fromat it anyway just to make sure.
echo "Interactive Shell Script to Make a USB Thumb Drive \for Flashing BIOS On a Lenovo Ideapad Y510"
echo ""
echo "You will need to have the program mbr installed"
echo "If you are on Ubuntu Linux you can retreve it form the repositories"
echo "If you are on Arch Linux you will need to get it from the Aur repository"
echo "Open anuther shell and \do that now..."
echo ""
verify="n"
while [ "$verify" != y ]
do
printf "Do you have mbr installed... yes or no?"
read AN1
echo ""
printf "You answered... $AN1 I have installed mbr. Is this correct... y or n?"
read verify
done
echo ""
if [ "$AN1" == "no" ]
then
echo "Install mbr now. Then run this script agin"
exit
else
echo "contunuing script"
fi
echo ""
# The next comand will make a directory to put needed files into. Note this file and everything init will be owned by root.
mkdir ~/usbbiosfiles && check1="yes"
if [ "$check1" = "yes" ]
then
echo "Made directory usbbiosfiles... OK"
else
echo "Could not \make directory usbbiosfiles"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
exit
fi
# The next two comands will get the FreeDOS file and the .ROM file.
cd ~/usbbiosfiles && checka="yes"
if [ "$checka" = "yes" ]
then
echo "Changing to the usbbiosfiles directory... OK"
else
echo "Could not Change to the usbbiosfiles directory"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
wget "http://www.fdos.org/bootdisks/autogen/FDOEM.144.gz" && check2="yes"
if [ "$check2" = "yes" ]
then
echo "Download of FreeDOS... OK"
else
echo "Could not Download FreeDOS"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
wget "http://ubuntuforums.org/attachment.php?attachmentid=78460&d=1216648756" && check3="yes"
if [ "$check3" = "yes" ]
then
echo "Download of the BIOS.ROM \file... OK"
else
echo "Could not Downlad the BIOS.ROM \file"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
# The next comand will name the .ROM file to the right name.
mv ~/usbbiosfiles/attachment.php?attachmentid=78460\&d=1216648756 ~/usbbiosfiles/06CN29WW.bios.update.tar.bz2 && check4="yes"
if [ "$check4" = "yes" ]
then
echo "Renameing of the BIOS.ROM \file... OK"
else
echo "Could not rename the BIOS.ROM \file"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
echo ""
# The next two comands set the variables. DEVX for the path i.e. /dev/xxx and MOUNTX for the mount point i.e. /media/xxx
verify="n"
while [ "$verify" != y ]
do
echo "You will need to know the Mount Point and the dev Path. You will also need to \make sure the File System \type is vFAT, FAT16 or FAT32."
echo ""
echo "With the USB Thumb Drive unpluged, Open another shell and run the comand df -T Then plug \in the USB Thumb Drive and run the comand df -T one \more time. The new device listed is the USB Thumb Drive. Note the Mount Point and The dev Path and the File system Type i.e. vFAT... If the File System \type is not vFAT, FAT16 or FAT32 you will need to fromat it with gparted. You may want to format the USB Thumb Drive anyway just to \make sure. In any \case delete all files and directorys on the USB drive before you go any ferther with this program."
echo ""
printf "Enter the dev path the USB Thumb Drive is at?"
read DEVX
echo ""
echo "Are you sure $DEVX is the dev path of the USB Thumb Drive... y or n?"
read verify
done
echo ""
verify="n"
while [ "$verify" != y ]
do
printf "What is the Mount Point of the USB Thumb Drive?"
read MOUNTX
echo ""
echo "Are you sure $MOUNTX is the Mount Point of the USB Drive... y or n?"
read verify
done
echo ""
install-mbr --enable A1 --partition 1 --force --timeout 0 $DEVX && check5="yes"
if [ "$check5" = "yes" ]
then
echo "Installing MBR on USB Thumb Dirve... OK"
else
echo "Could not install MBR on USB Thumb Drive"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
tar xjf ~/usbbiosfiles/*.tar.bz2 && check7="yes"
if [ "$check7" = "yes" ]
then
echo "Unpacking BIOS.ROM file... OK"
else
echo "Could not unpack BIOS.ROM file"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
gunzip ~/usbbiosfiles/FDOEM.144.gz && check8="yes"
if [ "$check8" = "yes" ]
then
echo "Unpacking FreeDOS files... OK"
else
echo "Could not unpack FreeDOS files"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
mkdir ~/usbbiosfiles/fdoem144 && check9="yes"
if [ "$check9" = "yes" ]
then
echo "Made directory fdoem144 in direcoty usbbiosfiles... OK"
echo ""
echo "Going to \sleep \for 5secs"
else
echo "Could not make directory fdoem144 in usbbiosfiles directory"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
modprobe loop && sleep 5 && check0="yes"
if [ "$check0" = "yes" ]
then
echo "Modprobeing loop... OK"
else
echo "Could not \modprobe loop"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
mount -o loop ~/usbbiosfiles/FDOEM.144 ~/usbbiosfiles/fdoem144 && check10="yes"
if [ "$check10" = "yes" ]
then
echo "Mounting FreeDOS on the fdoem144 directory... OK"
else
echo "Could not \mount FreeDOS on the fdoem144 directory"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
cp ~/usbbiosfiles/fdoem144/* $MOUNTX && check11="yes"
if [ "$check11" = "yes" ]
then
echo "Copying FreeDOS files to $MOUNTX... OK"
else
echo "Could not copy FreeDOS files to $MOUNTX"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
cp ~/usbbiosfiles/*.ROM $MOUNTX && check12="yes"
if [ "$check12" = "yes" ]
then
echo "Copying BIOS.ROM files to $MOUNTX... OK"
else
echo "Could not copy BIOS.ROM files to $MOUNTX"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
sync && check13="yes"
if [ "$check13" = "yes" ]
then
echo "Runing the syncing command... OK"
else
echo "Could not run the syncing command"
echo "look above \for \info"
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this scrip agin"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
rm -r ~/usbbiosfiles
exit
fi
umount ~/usbbiosfiles/fdoem144 && check14="yes"
if [ "$check14" = "yes" ]
then
echo "Unmounting of FreeDOS... OK"
else
echo "Could not unmount FreeDOS"
echo "Look above for errors or problems reported and fix the problem"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this script agin"
rm -r ~/usbbiosfiles
exit
fi
verify="n"
while [ "$verify" != y ]
do
printf "Do you see any errors... yes or no?"
read AN2
echo ""
printf "You answered... $AN2 to errors. Is this correct... y or n?"
read verify
done
echo ""
if [ "$AN2" == "yes" ]
then
echo "User Repoted... Error"
echo "Look above for errors or problems reported and fix the problem"
echo ""
echo "removeing directory usbbiosfiles..."
echo ""
echo "Reformat the USB Stick to FAT32 with gparted"
echo "Fix the problem and run this script agin"
rm -r ~/usbbiosfiles
exit
else
echo "Success"
echo "I did a lot of error checking too and didnt find anything"
echo ""
echo "Go get a pen and paper to write down these instructions"
printf "Then hit the Enter to continue"
read WAIT
echo ""
echo "Now leave the USB Thumb Drive pluged into your computer and Reboot. When the Lenovo Logo POST screen appears hit F2 to enter the CMOS setup utility. Go over to BOOT tab and go down to HardDrive \(Not Boot Order) \then \select the USB Thumb Drive as the 1st hard drve. Then F10 and yes to save changes. Your compter will reboot agin. Then when the Lenovo Logo POST Screen appers on reboot hit F4 to enter the BIOS FLASHING program. The USB Thumb Drive will be seen as the C drive \in the list on the Left, Select it. Then \select the .ROM \file \in the list on the Right and start the BIOS FLASH. \(NOTE Your hart may stop beating... This is normal) Pray to any God you know of and your computer should restart just like normal. Hit F2 and the BIOS will now stay it is 06CN29WW. You will need to \set the boot order to the way you like it and other things \if you need to because they have been changed to the default."
fi
echo ""
echo "End of script"
Last edited by hunterthomson (2008-08-10 11:17:47)

Personally..... (this is just how I would have written it - if it works, then it's good enough for me though )
I would change this whole block:
verify="n"
while [ "$verify" != y ]
do
printf "Do you have mbr installed... yes or no?"
read AN1
echo ""
printf "You answered... $AN1 I have installed mbr. Is this correct... y or n?"
read verify
done
echo ""
if [ "$AN1" == "no" ]
then
echo "Install mbr now. Then run this script agin"
exit
else
echo "contunuing script"
fi
To this much shorter code:
MBR='/usr/bin/install-mbr' # Or where ever you expect it to be
if [ ! -x $MBR ] ; then
echo "mbr doesn't appear to be installed."
echo "If it is installed, check it's location, make sure it's executable and then make sure the MBR variable in this script is correct"
exit 1
fi
I wouldn't have used the checkXX variables for each stage:
mkdir ~/usbbiosfiles
if [ $? != 0 ] ; then
#failed
echo "Could not \make directory usbbiosfiles"
echo "look above \for \info"
echo "Fix the problem and run this scrip agin"
exit 1
else
echo "Made directory usbbiosfiles... OK"
fi
There is an issue with the way you do your verifications - the user can never get out unless they answer 'y' or hit CTRL+C. Something like this gives them options:
verify="n"
while [ "$verify" != "y" && "$verify" != "n" ]; do
echo "You need to answer 'y'es or 'n'o"
read verify
echo $verify | tr "[:upper:]" "[:lower:]" # This converts the answer to lowercase so replies entered in upper case will still work
done
if [ $verify != 'y' ] ; then
exit 1
fi
One last thing I try to do in scripts... Declare all your binaries as variables at the start of the program, then execute the binary program by using the variable. For example:
# Binaries
TAR='/bin/tar'
CP='/bin/cp'
CHMOD='/bin/chmod'
# Execute tar and chmod the created file
$TAR cvzf /tmp/tarfile.tar.gz /etc/*.conf
$CHMOD 400 /etc/*.conf
This way, it's easy to change the path in future without having to hunt through the script if the paths change, and it also ensures you're calling the programs using the full paths to make sure you're not executing some strange variant or alias that someone has setup. If I use `chmod` 30 times in a script, and the path changes in the future or on a different system (`chmod` is a bad example cause it's highly unlikely to change, but you know what I mean), then all you need to do is update the variable at the start of the script, and it all works again without having to script-hunt and change it 30 times.

/etc/rc.d/network: bash script: how to find out, if there was an error

hello!
i want to write a bash script for my wireless lan. for this i need the information, if the network daemon has connected successfully or failed.
but there is a big problem: starting network success' every time, whether there was an error or not:
$ /etc/rc.d/network start
:: Starting network profile: 00wlan_home [BUSY]
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; No such device.
[FAIL]
:: Starting Network [DONE]
$ ls /var/run/daemons/
... network ...
can someone help me please? how can i realize that "::Starting Network ..." also fails and the script returns an exit status 1?
thanks for your help, maybe we can improve the script. but i'm not a geek in bash!
mfg iggy

iggy wrote:
hello!
i want to write a bash script for my wireless lan. for this i need the information, if the network daemon has connected successfully or failed.
but there is a big problem: starting network success' every time, whether there was an error or not:
$ /etc/rc.d/network start
:: Starting network profile: 00wlan_home [BUSY]
Error for wireless request "Set Mode" (8B06) :
SET failed on device wlan0 ; No such device.
[FAIL]
:: Starting Network [DONE]
$ ls /var/run/daemons/
... network ...
can someone help me please? how can i realize that "::Starting Network ..." also fails and the script returns an exit status 1?
thanks for your help, maybe we can improve the script. but i'm not a geek in bash!
mfg iggy
try using netcfg to start the wireless profile, that should keep you happy until the new network scripts are unleashed... which won't have this problem.
James

Using Bash script to edit config file

This is a really simple question, but given that I'm just learning Bash scripting and having this solved now would be really illustrative for me, I would really thank some help here.
I'm using uzbl, and running Tor+Polipo. So, as you will see below in the tail of the config file, there is a line to redirect the requests of uzbl through Polipo.
# === Post-load misc commands ================================================
sync_spawn_exec @scripts_dir/load_cookies.sh
sync_spawn_exec @scripts_dir/load_cookies.sh @data_home/uzbl/session-cookies.txt
# Set the "home" page.
#set uri = https://duckduckgo.com
# Local polipo proxy
set proxy_url = http://127.0.0.1:8123
# vim: set fdm=syntax:
What I want to accomplish is to comment in/out that line with a key shortcut on Awesome. I've thought of doing 2 scripts to do so and using 2 differente key shortcuts, but I want to "toggle" the proxy redirection with only 1 shortcut. To do so, I suppose that the script should go something like:
if
tool 'set proxy_url = http://127.0.0.1:8123' config_file
then
tool '#set proxy_url = http://127.0.0.1:8123' config_file
else
if
tool '#set proxy_url = http://127.0.0.1:8123' config_file
then
tool 'set proxy_url = http://127.0.0.1:8123' config_file
fi
fi
I know little about sed, but I think is the tool for this job. The most intriging part to me is to ask sed to print the regular expression when it finds it in the config file, and use that as an input in the conditional statement.
Well, this is a mess I have done here. Hope there is a simple answer to this.
Thanks in advance.-

You can do this with a single sed command:
sed -i 's/^#set proxy_url/set proxy_url/;
t end;
s/^set proxy_url/#set proxy_url/;
: end' config_file
This edits the file in-place (-i) and first tries to replace the commented with the uncommented line. If that suceeds, sed jumps to the "end" label. If not, it tries to replace the uncommented with the commented line. Thus you don't have to include any logic about the current state: if the first substitution succeeds, the line was obviously commented, if not, it was uncommented, and the second substitution should succeed.
Note that my knowledge of sed is very limited. There might be a simpler way to do this.
EDIT: For the sake of example, here's how to do the same in bash using regular expressions. Note how this script needs to use a temporary file to simulate in-place editing, how it needs to process the file line by line manually, etc. All things that sed does out of the box...
#!/bin/bash
tmp=test.conf.tmp
echo -n "" > "$tmp"
while read line; do
if [[ "$line" =~ ^#set\ proxy ]]; then
echo "${line/\#/}" >> "$tmp"
elif [[ "$line" =~ ^set\ proxy ]]; then
echo "#$line" >> "$tmp"
else
echo "$line" >> "$tmp"
fi
done < test.conf
mv test.conf.tmp test.conf
To answer your original question, the line
if [[ "$line" =~ ^#set\ proxy ]]; then
reads: if the line begins with a "#", followed by "set proxy", then...
Last edited by hbekel (2011-03-20 10:40:16)

HOW DO I RUN A UNIX BASH SCRIPT FROM JAVA??

HI. Here's a tricky little problem i have. There's a unix bash script that has some commands in it, that manipulate a file. It appends a certain string variable to a file called users. The users file is an ordinary text file.
I know this script to work perfectly, when i invoke it like this directyl from the command line: ./addusers.sh
or even: bash /downloads/selinux/policy/addusers.sh
Now, i have a java program, and its meant to just execute that script. It doesnt throw any Exceptions at runtime. But when i look at the users file, and expect it to have an extra line that was the string variable, the file is UNTOUCHED!
Again, direct command line invocation works, but not from java. Here's what my invocation from java looks like:
Process p = Runtime.getRunTime().exec("bash downloads/selinux/policy/addusers.sh");
The strange thing is, i tried a different bash command. I tried:
Process p = Runtime.getRunTime().exec("mkdir /temporary");
and this worked!
so why not the other one??
I cant figure it out.

You say:
bash /downloads/selinux/policy/addusers.sh
And you say in Java:
Process p = Runtime.getRunTime().exec("bash
downloads/selinux/policy/addusers.sh");
As if a leading / would be missing from the Java
version...nyix says:>
...OK sorry about that. i DO have a / in front of the downloads.... section in the java method. So its:
Process p = Runtime.getRunTime().
exec("bash /downloads/selinux/policy/addusers.sh");
HELP please?

How can I execute a bash script by double clicking in finder

Hello!
How can I execute a bash script using finder? Or better: How can I create an alias, which executes my bash script?
Thanks Johann

Add the suffix command in your script name. E.g. Script.command.

Bash script to insert item in a alphabetical list

I would like to use a bash script to insert a new "source" file into a list of sources which occurs within another file.
The file in question is quite long and contains many other things. However the list of sources abides by the format below.
[snip]
SOURCES = \
_add_datasource_.m \
_add_line_series_.m \
ylabel.m \
ylim.m \
zlabel.m \
zlim.m
[snip]
How might I insert a new source file in alphabetical order. I'm assuming there is a fairly simple script to do such.
TiA

#!/usr/bin/env bash
if [[ $# != 1 ]]; then
echo 1>&2 "Usage: ${0##*/} fileto_insert_inSOURCE"
exit 1
fi
MAKEFILE=Makefile.in
TMP=/tmp/tmp.$$
awk -v new="$1" '
/^SOURCES =/ { in_src = 1 }
in_src && ! done && $1 > new {
# New file goes here
printf(" %s \
", new)
in_src = 0
done = 1
in_src && ! done && ! /\$/ {
# New file must go after the last entry.
# Put on old last entry.
printf("%s \
", $0)
# replace current $0 with the new file.
$0 = sprintf(" %s
", new)
done = 1
! /\$/ { in_src = 0 } # NOT in SOURCE
{ print } # print current line
' $MAKEFILE >$TMP
mv $TMP $MAKEFILE

How do I save a "bash" script? (in attempt to fix one of my other problems)

Here is my original problem:
http://discussions.apple.com/thread.jspa?threadID=2195627&tstart=0
I came across this that sounds like it will help my issue:
http://www.macosxhints.com/article.php?story=20090316190817357
However, what am I supposed to do with that code? Put it in the Terminal? Save it as an Apple Script? I also got the "lingon" program set up, all I need to do is figure how how to save this "bash" script and all set!
Any ideas?
-Scott

This link might help as it shows how to create the plist using lingon:
http://mymacfixes.blogspot.com/2009/06/how-do-i-stop-clicking-noise-from-hard.ht ml

Conky doesn't display bash-script variables (array)

I've been playing around with Conky and a bash script of mine. Unfortunately Conky displays only static text and not the array-variables in my script.
In my script:
...some code here...
echo "Static text: ${Variable[1]}"
In my conkyrc:
...some code here...
${exec ~/Test/test.sh}
The result is: "Static text: ". When running the script from the command line everything is fine. I've also tried with exec, execi, execp, texeci to no avail. Any ideas?
Edit: I had to be more specific.
Last edited by chilebiker (2009-10-06 03:30:20)

Try echo -n "Static text: ${Variable[1]}"

Bash script doesn't work (Also, help me condense it)...

I am trying to make myself a bash script which combines files together based off of a config file. It is automating combining the audio book tracks I ripped of my CDs into chapters for easier reference. My first problem is that even though I used ', cat still thinks that everything is a separate file. My second problem is that it is way too long, any way I can have it automatically go up 1 chapter until a specified number (ie, until the value of the CHAPTERS variable)? Thanks to those who help.
chapcomb.sh
#!/bin/bash
# * ChapterCombine *
# * By smartboyathome *
# * A script which was made to combine *
# * chapters from ripped audio books *
# * together, but can be edited to *
# * combine just about anything. *
# * The config file is located in your *
# * home directory, under the name *
# * '.chapcomb.config'. If you do not *
# * have this file, create it. *
# * Otherwise this script will not *
# * run, as it won't have the proper *
# * variables. *
# * This can be changed by changing *
# * the CONFIG variable below. *
# * Licensed under: *
# * SmartLicense version 1.0 *
VERSION=0.1
usage() {
echo "Chapter Combine v$VERSION"
echo "A configuration file must be made in order to use this script. Configuration files are located at $CONFIG. This can be changed by adding CONFIG='blah' before this command, or by changing the script directly. See the sample file for how it should look."
while [ "$#" -ne "0" ]; do
case $# in
--help)
usage
exit 0
-h)
usage
exit 0
esac
done
# The config file stuff.
if [ -z "$CONFIG" ]; then
CONFIG="$HOME/.chapcomb.config"
fi
. $CONFIG
cd "$BOOKDIR"
combine() {
# Checks if file exists, and if so, deletes it.
if [ -a $NAME ]; then
rm $NAME
fi
# Combines files
cat $FILES >> $NAME
# Checks to make sure that the chapter combined ok.
if [ -s "$NAME" ]; then
echo "File $NAME is ok."
else
echo "File $NAME had an error and didn't combine. Please fix config file and rerun this script."
exit 0
fi
chapter01
combine
chapter02
combine
chapter03
combine
chapter04
combine
chapter05
combine
chapter06
combine
chapter07
combine
chapter08
combine
chapter09
combine
chapter10
combine
chapter11
combine
chapter12
combine
chapter13
combine
chapter14
combine
chapter15
combine
chapter16
combine
chapter17
combine
chapter18
combine
chapter19
combine
chapter20
combine
chapter21
combine
chapter22
combine
chapter23
combine
chapter24
combine
chapter25
combine
chapter26
combine
chapter27
combine
chapter28
combine
chapter29
combine
.chapcomb.config
# Config file for ChapterCombine
# DO NOT DELETE, OR CHAPTERCOMBINE WILL NOT FUNCTION!
# Book's Directory
BOOKDIR='/media/Home/aabbott/Star Wars Fate of the Jedi Outcast'
# Each chapter's settings.
chapter01() {
# FILES='Outcast\ Disc\ 1/01\ Track\ 1.mp3 Outcast\ Disc\ 1/02\ Track\ 2.mp3 Outcast\ Disc\ 1/03\ Track\ 3.mp3 Outcast\ Disc\ 1/04\ Track\ 4.mp3'
FILES="'Outcast Disc 1'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4'}.mp3"
NAME='Chapter01.mp3'
chapter02() {
# FILES='Outcast\ Disc\ 1/05\ Track\ 5.mp3 Outcast\ Disc\ 1/06\ Track\ 6.mp3 Outcast\ Disc\ 1/07\ Track\ 7.mp3 Outcast\ Disc\ 1/08\ Track\ 8.mp3 Outcast\ Disc\ 1/09\ Track\ 9.mp3 Outcast\ Disc\ 1/10\ Track\ 10.mp3 Outcast\ Disc\ 1/11\ Track\ 11.mp3'
FILES="'Outcast Disc 1'/{'05 Track 5','06 Track 6','07 Track 7','08 Track 8','09 Track 9','10 Track 10','11 Track 11'}.mp3"
NAME='Chapter02.mp3'
chapter03() {
# FILES='Outcast\ Disc\ 1/12\ Track\ 12.mp3 Outcast\ Disc\ 1/13\ Track\ 13.mp3 Outcast\ Disc\ 1/14\ Track\ 14.mp3 Outcast\ Disc\ 1/15\ Track\ 15.mp3 Outcast\ Disc\ 1/16\ Track\ 16.mp3'
FILES="'Outcast Disc 1'/{'12 Track 12','13 Track 13','14 Track 14','15 Track 15','16 Track 16'}.mp3"
NAME='Chapter03.mp3'
chapter04() {
# FILES='Outcast\ Disc\ 2/01\ Track\ 1.mp3 Outcast\ Disc\ 2/02\ Track\ 2.mp3 Outcast\ Disc\ 2/03\ Track\ 3.mp3 Outcast\ Disc\ 2/04\ Track\ 4.mp3'
FILES="'Outcast Disc 2'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4'}.mp3"
NAME='Chapter04.mp3'
chapter05() {
FILES="'Outcast Disc 2'/{'05 Track 5','06 Track 6','07 Track 7','08 Track 8'}.mp3"
NAME='Chapter05.mp3'
chapter06() {
FILES="'Outcast Disc 2'/{'09 Track 9','10 Track 10','11 Track 11','12 Track 12','13 Track 13'}.mp3"
NAME='Chapter06.mp3'
# This one needs some special parameters as the chapter is split between two Discs.
chapter07() {
FILES="{'Outcast Disc 2'/{'14 Track 4','15 Track 15','16 Track 16','17 Track 17'}.mp3,'Outcast Disc 3'/{'01 Track 1','02 Track 2','03 Track 3'}}.mp3"
NAME='Chapter07.mp3'
chapter08() {
FILES="'Outcast Disc 3'/{'04 Track 4','05 Track 5','06 Track 6','07 Track 7','08 Track 8'}.mp3"
NAME='Chapter08.mp3'
chapter09() {
FILES="'Outcast Disc 3'/{'09 Track 9','10 Track 10','11 Track 11'}.mp3"
NAME='Chapter09.mp3'
chapter10() {
FILES="'Outcast Disc 3'/{'12 Track 12','13 Track 13','14 Track 14','15 Track 15'}.mp3"
NAME='Chapter10.mp3'
chapter11() {
FILES="'Outcast Disc 4'/{'01 Track 1','02 Track 2','03 Track 3'}.mp3"
NAME='Chapter11.mp3'
chapter12() {
FILES="'Outcast Disc 4'/{'04 Track 4','05 Track 5','06 Track 6','07 Track 7','08 Track 8'}.mp3"
NAME='Chapter12.mp3'
chapter13() {
FILES="'Outcast Disc 4'/{'09 Track 9','10 Track 10','11 Track 11'}.mp3"
NAME='Chapter13.mp3'
chapter14() {
FILES="'Outcast Disc 4'/{'12 Track 12','13 Track 13','14 Track 14'}.mp3"
NAME='Chapter14.mp3'
chapter15() {
FILES="{'Outcast Disc 4'/'15 Track 15','Outcast Disc 5'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4','05 Track 5'}}.mp3"
NAME='Chapter15.mp3'
chapter16() {
FILES="'Outcast Disc 5'/{'06 Track 6','07 Track 7','08 Track 8','09 Track 9'}.mp3"
NAME='Chapter16.mp3'
chapter17() {
FILES="'Outcast Disc 5'/{'10 Track 10','11 Track 11','12 Track 12','13 Track 13'}.mp3"
NAME='Chapter17.mp3'
chapter18() {
FILES="{'Outcast Disc 5'/'15 Track 15','Outcast Disc 6'/{'01 Track 1','02 Track 2'}}.mp3"
NAME='Chapter18.mp3'
chapter19() {
FILES="'Outcast Disc 6'/{'03 Track 3','04 Track 4','05 Track 5','06 Track 6','07 Track 7','08 Track 8'}.mp3"
NAME='Chapter19.mp3'
chapter20() {
FILES="'Outcast Disc 6'/{'09 Track 9','10 Track 10','11 Track 11','12 Track 12','13 Track 13','14 Track 14'}.mp3"
NAME='Chapter20.mp3'
chapter21() {
FILES="'Outcast Disc 6'/{'15 Track 15','16 Track 16','17 Track 17','18 Track 18','19 Track 19'}.mp3"
NAME='Chapter21.mp3'
chapter22() {
FILES="'Outcast Disc 7'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4'}.mp3"
NAME='Chapter22.mp3'
chapter23() {
FILES="'Outcast Disc 7'/{'05 Track 5','06 Track 6','07 Track 7','08 Track 8'}.mp3"
NAME='Chapter23.mp3'
chapter24() {
FILES="'Outcast Disc 7'/{'09 Track 9','10 Track 10','11 Track 11','12 Track 12','13 Track 13'}.mp3"
NAME='Chapter24.mp3'
chapter25() {
FILES="{'Outcast Disc 7'/{'14 Track 14','15 Track 15','16 Track 16','17 Track 17'},'Outcast Disk 8'/'01 Track 1'}.mp3"
NAME='Chapter25.mp3'
chapter26() {
FILES="'Outcast Disc 8'/{'02 Track 2','03 Track 3','04 Track 4','05 Track 5'}.mp3"
NAME='Chapter26.mp3'
chapter27() {
FILES="'Outcast Disc 8'/{'06 Track 6','07 Track 7','08 Track 8','09 Track 9'}.mp3"
NAME='Chapter27.mp3'
chapter28() {
FILES="'Outcast Disc 8'/{'10 Track 10','11 Track 11','12 Track 12','13 Track 13'}.mp3"
NAME='Chapter28.mp3'
chapter29() {
FILES="'Outcast Disc 8'/{'14 Track 14','15 Track 15','16 Track 16'}.mp3"
NAME='Chapter29.mp3'

kumyco wrote:
for FILES=test/{a,b,c} you may want to do something like
FILES=$(echo test/{a,b,c})
That's a good one. And eval would work with simple examples, but once you have spaces and such in filenames it won't work I think.
If you are going to do this often, then there are too many things that can go wrong with a script that tries to automatically generate the filenames. Even 01* can go wrong.
So if you do have the filenames all in the .conf, then you can replace FILES= with cat and NAME= with >
The actual script doesn't add that much, except checking if it exists (just use > instead of >>) and if it isn't empty (not really necessary) (why did you put a license on that? is that even legal?)
So just use the .conf file as the main script.
Turn this:
BOOKDIR='/media/Home/aabbott/Star Wars Fate of the Jedi Outcast'
chapter01() {
FILES="'Outcast Disc 1'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4'}.mp3"
NAME='Chapter01.mp3'
chapter02() {
FILES="'Outcast Disc 1'/{'05 Track 5','06 Track 6','07 Track 7','08 Track 8','09 Track 9','10 Track 10','11 Track 11'}.mp3"
NAME='Chapter02.mp3'
into this:
cd '/media/Home/aabbott/Star Wars Fate of the Jedi Outcast'
cat 'Outcast Disc 1'/{'01 Track 1','02 Track 2','03 Track 3','04 Track 4'}.mp3 > 'Chapter01.mp3'
cat 'Outcast Disc 1'/{'05 Track 5','06 Track 6','07 Track 7','08 Track 8','09 Track 9','10 Track 10','11 Track 11'}.mp3 > 'Chapter02.mp3'
Right?
Why would you build anything around that?
If you are sure the filenames are all the same, you can use *
cat *\ 1/*\ {1..4}.mp3 > Chapter01.mp3
cat *\ 100/*\ {70..99}.mp3 > Chapter99.mp3

Bash script to trim all filenames with special characters recursively?

Hi,
I have a 30 GB directory full of data I recovered from a friend's laptop after her Windows XP crashed. I'd like to burn that data, but I can't, because many of the filenames contain weird characters (spaces, accents, things even worse that my XTerm displays as inverted question marks). So, mkisofs exits with an error.
I'd like to clean that mess up, but it would take months to do that manually. Well, I only know a very little Bash, but I think this problem is already too heavy for my modest knowledge. Here's the problem:
- check the contents of directory ~/backup recursively
- find files whose filenames contain characters other than [A-Za-z0-9] and then maybe "-" and "_" and ".".
- replace these characters either by an "_" or just erase them
Now how would I translate that into a little Bash script?
Cheers...

Heyyyyy... nice idea

How to download file using ftp in bash script

Hi! I'm runnig a bash script in solaris i want within the script to dowload file using ftp
How can i do it?
Tanks a lot

hello,evgchech
please try this way:
1. In the bash script, try following command:
ftp -n < ftpcmdfile2 in the ftpcmdfile (which is a file),coding the interactive commands of FTP such as:
user anonymous [email protected]
          cd /var/sun/download
          bi
          mget *.*
          bye
     try it and good luck!
Wang Yu
Developer Technical Support
Sun Microsystems
http://sun.com/developers/support

Spinach (bash script)

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