Bash scripts with rox

in rox-filer you can "send" files to bash scripts by right clicking on them and selecting the script. for example:
mogrify -format jpg $1
i use these scripts all the time and they are really handy but they are limited.
$1 uses the whole path and filename so it is almost impossible to do simple renaming or copy a file to a server without it being copied to /targetdir/fullpath/filename, for example.
I am trying to work out how to get the filename into my scripts - with the full path - and then chop it up into path, filename, extention. i read about word modifiers in bash e.g. !$:h - which works great on the command line but not in scripts - any ideas?

You mean dirname, basename commands?
This should be what you are looking for (I hope):
http://www.splike.com/howtos/bash_faq.html

Similar Messages

Bash Scripting with Conky -- How to implement?

Hey Folks, my first post here and I'm looking for a bit of help. I've created a bash script to work with conky in which its purpose is to change the color of the battery bar depending on current voltage.
Here's the bash script:
#!/bin/bash
# Change Conky battery color depending on charge
chrg=`cat /proc/acpi/battery/BAT1/state | grep "remaining capacity" |
awk '{print $3 }'`
echo $chrg
if [ $chrg -lt "3499" ]; then
${color red}${battery_percent BAT1}% ${battery_bar 4 BAT1}
elif [ "$chrg" -lt "5100"]; then
${color orange}${battery_percent BAT1}% ${battery_bar 4 BAT1}
else ${color green}${battery_percent BAT1}% ${battery_bar 4 BAT1}
fi
Essentially what it is supposed to do is grab and store the "remaining capacity" and if its lower than a certain point it changes color. What I'm having trouble with is actually implementing the colors into conky. Right now all it is doing is printing the charge as you can see. Any help would be appreciated. Thanks!

I had this issue, took me three days to solve. Using if_match, put all your if_matches in a line, with each option having its color of choice, then put the bar, or % at the end. You will need to make sure it is in sequential order so the color will not overlap the color you want for the state in the if_match. I know this is an old thread, I will edit my post when I get on my netbook with the code.
I found this thread on a google search for bash and conky usages.
[edit] here was my solution for the if_match using the battery.
${if_match ${battery_percent BAT1} <= 49}${color0}${endif}${if_match ${battery_percent BAT1} <= 20}${color9}${endif}${if_match ${battery_percent BAT1} >= 50}${color4}${endif}${battery BAT1} ${alignr}${battery_bar 6,160 BAT1}
I have my colors set yellow for 49% and below, red 20% and lower, and last green for 50% and higher. Essentially this will pick yellow for under 49% and the if_match for red under 20%, the red will override the yellow, this is why order is important.
Remember this is all in one line, now there are cleaner ways of setting this up using lua. That is something I am still working on.
Last edited by mrknify (2014-03-05 17:09:59)

How to make a systemd service for a bash script with pipes?

I haven't been able to make a successful systemd service from this script.
The script itself works (in terminal and xdg autostart), but systemd doesn't run anything after the first pipe (neither sed nor spd-say execute).
Here's my service:
[Unit]
Description=Speak kernel and userspace messages
[Service]
Type=simple
ExecStart=/usr/local/sbin/dmesg-speak
[Install]
WantedBy=multi-user.target
Systemd says the script starts successfully, but only dmesg is started; it's output is not piped through sed or spd-say.
I've also tried Type=forking without much success.
Is there something I can do other than switching to sysv-init?
Do I need IgnoreSIGPIPE=false?
Last edited by quequotion (2015-02-12 17:07:21)

fsckd wrote:The linked script appears to lack a hashbang. No hashbang = arbitrary interpretor.
Yeah, that should probably be there. Since last post I've employed /usr/bin/bash in the service and added a hasbang, but sdp-say still does not run as a systemd service.
I didn't test either option individually; the key seems to be finding an audio output accessible before user login. I am not certain:
ccoffey wrote:If a pulseaudio session exists at all
I am curious to try this:
ccoffey wrote:run pulseaudio and dbus via XVFB.
Setting DISPLAY as root would then allow you play audio.
Still, it seems to me that ALSA would be available at some stage during boot, as is speech-dispatcher (for working with speakup!). If espeak were configured to play audio for root to ALSA, there would be a sound outlet for it (espeak can be used in pipeline mode without speech-dispatcher if need be), and pulseaudio would be probably be OK with that whenever it got around to starting (audio passed through alsa gets piped through, regardless of its source right?).
I have tried the script with espeak instead of spd-say without success.
Last edited by quequotion (2015-02-26 03:06:24)

Bash script with sqlplus

Hi, I hope I am in correct forum. I'm sorry, if not.
I have following issue:
#!/bin/bash
ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
ORACLE_SID=orcl
PATH=$ORACLE_HOME/bin
export ORACLE_HOME ORACLE_SID PATH
sqlplus -s usera/oracle << EOF
whenever sqlerror exit sql.sqlcode
set serveroutput on feedback off
-- some piece of code
accept continue CHAR prompt 'To continue press ENTER'
-- some piece of code
exit;
EOF
I want to stop on line of accept command and wait for user input, but the code continues and doesn't wait for input.
Is it possible to do this?

It doesn't work because the sqlplus command is already taking its input from the "here" document (ending with EOF marker in your example). Once the "accept continue" line gets executed by sqlplus, the very next line of the "here" document satisfies the prompt.
Try this instead:
#!/bin/bash
ORACLE_HOME=/u01/app/oracle/product/10.2.0/db_1
ORACLE_SID=orcl
PATH=$ORACLE_HOME/bin
export ORACLE_HOME ORACLE_SID PATH
cat <<EOF > /tmp/sqlplus_script_text.$$.sql ## the $$ is the current process ID, to prevent two running scripts from stepping on each other
whenever sqlerror exit sql.sqlcode
set serveroutput on feedback off
-- some piece of code
accept continue CHAR prompt 'To continue press ENTER'
-- some piece of code
exit;
EOF
sqlplus -s usera/oracle @/tmp/sqlplus_script_text.$$.sql
rm -f /tmp/sqlplus_script_text.$$.sql

Bash script with Cron job

Hello,
This is my first post:-)
we have developed one script to do basic LDAP healthcheck and tested. It's working fine. But have to run manually daily. I want to put that script in cron job.
So that it generates reports automatically. Can some one please give me the hit on it or any links which i could understand more easily.
Thanks.

Hi,
this doesn't look exactly like a DS-related question, however the best option would be 'man crontab' / 'man cron' and read the man pages ;-)
But, assuming you're running Solaris 10... and you would like to run your script every day of every month of every week at 1:30 AM... you should add the following line to your crontab:
1 30 * * * /full/path/to/your/script.sh
HTH,
Marco

BASH Script - Launch App with

I'm trying to write a simple BASH script that will laungh an program, but that program needs command line arguments.
When I put it in quotes it says it can't find the file, if I don't use quotes then it won't run the program with the command line arguments. How can I launch a program using a BASH script with command line arguments?
Thanks in advance

#!/bin/bash
/Users/name/Desktop/Directory/app -f configfile

Using admin_client.jar from bash script

Hello,
When I make a call "java -jar admin_client.jar" from a bash script I always get 0 for $? even when there are errors reported in the console. How can I check the status correctly?
S

Greetings,
Can you see the console when running the script? I would try to test something simple like -testDatabaseConnection and you should see a result. If you cannot login the the server directly, pipe the output to a file. Next, build up your bash script with additional complexity as you go. Post the results here for the group to analyze.
THX
-Michael
Edited by: Michael F. Hardy on Dec 2, 2008 2:02 PM

[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)

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

Bash script to dumpstream many files simultaneously with mplayer

hi guys
i have a problem which i´m sure can be solved with the power of bash scripting
unfortunately i´m no bash scripting guru and all my experiments failed so far
the problem:
i have a file in which are links(streaminglinks)
mplayer offers the funtion to dump such a stream with simply issuing
mplayer -dumpstream mms://path/to/video -dumpfile video1
for example.
now i want mplayer to download this streams specified in the links-file automatically.
basically all it required is a bash script which goes through the link file and generates a command like mplay -dumpstream <link> -dumpfile video<n>
(where n is the nth link) and execute it.maybe there a even simpler solutions
well since i´m not that experienced with bashscripting i can´t solve that problem at my self....
i´m grateful for any help

hey guys
thx for the two scripts.
my approach was nearly the same as your´s kraluz with the difference that it doesn´t work
but they both have a little blemish
they download the files sequentially not simultaneously
how could that be realised
thx in advance

Problem with "date -d" function in bash script. Leopard bug?

I have this really nice rsync bash script that I use to make rotating snapshot backups of my different Ubuntu servers to a single backup server.
I am now trying to use this same script on my Leopard machine, but it seems to have a serious problem with the following lines of code:
lday=`date +'image-%Y-%m-%d-%H' -d '1 day ago'`
lweek=`date +'image-%Y-%m-%d-%H' -d '1 week ago'`
It generates the following error:
date: illegal time format
usage: date [-jnu] [-d dst] [-r seconds] [-t west] [-v[+|-]val[ymwdHMS]] ...
[-f fmt date | [[[mm]dd]HH]MM[[cc]yy][.ss]] [+format]
It's clear that it doesn't like the "-d '1 day ago'" part in my code.
Is there a different way in Leopard to get yesterday's or last week's date in a bash script? Or is this a Leopard bug?
Could someone please help me out? I've be trying to research this for the past 8 hours, but can't seem to find any solution to this problem.
Thanks in advance.

Is there a different way in Leopard to get yesterday's or last week's date in a bash script?
date -v-1d
date -v-7d

[solved] Segmentation fault with bash script

I have a bash script that checks if it has to do something, if not it sleeps 15 secs and checks again. It works great except that after ~6hrs of just checking and sleeping it seg faults. I upped the stack limit with ulimit -s and it goes ~12hrs before it seg faults. I have a similar script that I have been using for ages that works for 24hrs no problem and I can't pinpoint where the problem is.
The check it does is to see if a file exists, if it's empty and if not, read the first line of a file and do some date comparisons. It doesn't matter if the file is empty or not the seg fault always happens.
Here's the seg fault causing script - it starts at the bottom
#!/bin/bash
# User defines
declare -i DVB_DEVICE_NUM="0"
declare CHANNELS_CONF="${HOME}/Mychannels.conf"
declare SAVE_FOLDER="${HOME}/TV/tele"
declare SCHED_FILE="$HOME/.sched-tv"
declare ZAP_COMMAND="tzap"
declare -i SLEEP=15
# Program defines
declare -i DAY="0"
declare -i START="0"
declare -i FINISH="0"
declare CHAN="0"
declare NAME="0"
declare -i MINUTES="0"
declare -i REC_START="0"
declare -i REC_HOURS="0"
declare -i REC_MINS="0"
declare -i howlong="0"
declare -i PIDOF_AZAP=0
declare -i PIDOF_CAT=0
red='\033[1;31m'
green='\033[1;32m'
yell='\033[1;33m'
cyan='\033[1;36m'
white='\033[1;37m'
reset='\033[0m'
function remove_entry {
if [ "$NAME" == "" ]; then
sed "/$DAY $START $FINISH $CHAN/d" $SCHED_FILE > /tmp/dummy
else
sed "/$DAY $START $FINISH $CHAN $NAME/d" $SCHED_FILE > /tmp/dummy
fi
mv /tmp/dummy $SCHED_FILE
function record_entry {
${ZAP_COMMAND} -a ${DVB_DEVICE_NUM} -f ${DVB_DEVICE_NUM} -d ${DVB_DEVICE_NUM} \
-c $CHANNELS_CONF -r ${CHAN} >/dev/null 2>&1 &
PIDOF_AZAP=$!
if [ "$PIDOF_AZAP" == "" ]; then
printf "$red\tError starting ${ZAP_COMMAND}.\n\tFAILED: $CHAN $START\n"
remove_entry
exit 1
fi
printf "$green\tSET CHANNEL$cyan ${CHAN}\n"
REC_MINS=$((${START}%100))
REC_HOURS=0
MINUTES=0
REC_START=$(($START-$REC_MINS))
while [ $((${REC_START}+${REC_HOURS}+${REC_MINS})) -lt $FINISH ]; do
((REC_MINS++))
((MINUTES++))
if [ ${REC_MINS} -ge 60 ]; then
REC_MINS=0
((REC_HOURS+=100))
fi
done
if [ "$NAME" == "" ]; then
declare FILE_NAME="${SAVE_FOLDER}/TV-`date +%Y%m%d-%H%M`-ch.${CHAN}-${MINUTES}.min.mpg"
else
declare FILE_NAME="${SAVE_FOLDER}/TV-${NAME}-${MINUTES}.min.mpg"
fi
dd if=/dev/dvb/adapter${DVB_DEVICE_NUM}/dvr${DVB_DEVICE_NUM} \
of=${FILE_NAME} conv=noerror &
PIDOF_CAT=$!
if (( ${PIDOF_CAT} == 0 )); then
printf "$red\tError Starting Recording.\n\t/dev/dvb/adapter${DVB_DEVICE_NUM}/dvr${DVB_DEVICE_NUM} Unavailable\n"
kill ${PIDOF_AZAP}
remove_entry
exit 1
fi
printf "$yell\tRECORDING TO :$cyan ${FILE_NAME}\n"
sleep ${MINUTES}m
kill ${PIDOF_CAT} && wait ${PIDOF_CAT} 2> /dev/null
# pkill $ZAP_COMMAND # && wait ${PIDOF_AZAP} 2> /dev/null
kill ${PIDOF_AZAP} && wait ${PIDOF_AZAP} 2> /dev/null
printf "$yell\tFINISHED REC :$cyan ${FILE_NAME}\n$reset"
remove_entry
waiting 1
function check_action {
[ -e "$SCHED_FILE" ] || waiting $SLEEP
[ "`cat $SCHED_FILE`" == "" ] && waiting $SLEEP
DAY="0"; START="0"; FINISH="0"; CHAN="0"; NAME="0"
TODAY=`date +%Y%m%d`
NOW=`date +%k%M`
while read -r DAY START FINISH CHAN NAME; do
#printf "$DAY $START $FINISH $CHAN $NAME\n"
break
done < $SCHED_FILE
if [ $DAY == $TODAY ] && [ $START -lt $NOW ]; then
printf "$red\tOld Entry : Removing $CHAN $START\n"
remove_entry
waiting 1
fi
if [ $DAY == $TODAY ] && [ $START == $NOW ]; then
record_entry
else
waiting $SLEEP
fi
function waiting {
howlong=$1
sleep $howlong && check_action
check_action
exit 0
And the script that has been working fine 24hrs at a time
#!/bin/bash
echo alarm uses a twelve hour clock
echo Type the time for the alarm to sound as 00-00-?m
echo e.g. 05-35-pm for 5:35pm :: 05-35-am for 5:35am
read TIME
function play {
A="$(date +%I-%M-%P)"
if [ $A = $TIME ]; then
for i in {1..10}; do
$(aplay -c 1 /home/$USER/alarm/chime.wav); done
exit
else
wait
fi
function wait {
sleep 15 && play
play
I was hoping to have this script idling away in screen with rtorrent, always ready to do something if need be but that's not going to happen unless I can get a clue on what part of the script I need to change to not hit any limits. My websearches are failing me on this...
Last edited by moetunes (2012-06-24 21:41:52)

Thanks falconindy. I changed to using a while loop.
#!/bin/bash
set -o nounset
shopt -s huponexit
# User defines
declare -i DVB_DEVICE_NUM="0"
declare CHANNELS_CONF="${HOME}/Mychannels.conf"
declare SAVE_FOLDER="${HOME}/TV/tele"
declare SCHED_FILE="$HOME/.sched-tv"
declare ZAP_COMMAND="tzap"
declare -i SLEEP=15
# Program defines
declare -i DAY="0"
declare -i START="0"
declare -i FINISH="0"
declare CHAN="0"
declare NAME="0"
declare -i MINUTES="0"
declare -i REC_START="0"
declare -i REC_HOURS="0"
declare -i REC_MINS="0"
declare -i howlong=$SLEEP
declare -i PIDOF_AZAP=0
declare -i PIDOF_CAT=0
red='\033[1;31m'
green='\033[1;32m'
yell='\033[1;33m'
cyan='\033[1;36m'
white='\033[1;37m'
reset='\033[0m'
function remove_entry {
if [ "$NAME" == "" ]; then
sed "/$DAY $START $FINISH $CHAN/d" $SCHED_FILE > /tmp/dummy
else
sed "/$DAY $START $FINISH $CHAN $NAME/d" $SCHED_FILE > /tmp/dummy
fi
mv /tmp/dummy $SCHED_FILE
function record_entry {
${ZAP_COMMAND} -a ${DVB_DEVICE_NUM} -f ${DVB_DEVICE_NUM} -d ${DVB_DEVICE_NUM} \
-c $CHANNELS_CONF -r ${CHAN} >/dev/null 2>&1 &
PIDOF_AZAP=$!
if [ "$PIDOF_AZAP" == "" ]; then
printf "$red\tError starting ${ZAP_COMMAND}.\n\tFAILED: $CHAN $START\n"
remove_entry
exit 1
fi
printf "$green\tSET CHANNEL$cyan ${CHAN}\n"
REC_MINS=$((${START}%100))
REC_HOURS=0
MINUTES=0
REC_START=$(($START-$REC_MINS))
while [ $((${REC_START}+${REC_HOURS}+${REC_MINS})) -lt $FINISH ]; do
((REC_MINS++))
((MINUTES++))
if [ ${REC_MINS} -ge 60 ]; then
REC_MINS=0
((REC_HOURS+=100))
fi
done
if [ "$NAME" == "" ]; then
declare FILE_NAME="${SAVE_FOLDER}/TV-`date +%Y%m%d-%H%M`-ch.${CHAN}-${MINUTES}.min.mpg"
else
declare FILE_NAME="${SAVE_FOLDER}/TV-${NAME}-${MINUTES}.min.mpg"
fi
dd if=/dev/dvb/adapter${DVB_DEVICE_NUM}/dvr${DVB_DEVICE_NUM} \
of=${FILE_NAME} conv=noerror &
PIDOF_CAT=$!
if (( ${PIDOF_CAT} == 0 )); then
printf "$red\tError Starting Recording.\n\t/dev/dvb/adapter${DVB_DEVICE_NUM}/dvr${DVB_DEVICE_NUM} Unavailable\n"
kill ${PIDOF_AZAP}
remove_entry
exit 1
fi
printf "$yell\tRECORDING TO :$cyan ${FILE_NAME}\n"
sleep ${MINUTES}m
kill ${PIDOF_CAT} && wait ${PIDOF_CAT} 2> /dev/null
# pkill $ZAP_COMMAND # && wait ${PIDOF_AZAP} 2> /dev/null
kill ${PIDOF_AZAP} && wait ${PIDOF_AZAP} 2> /dev/null
printf "$yell\tFINISHED REC :$cyan ${FILE_NAME}\n$reset"
remove_entry
while true; do
sleep $howlong
howlong=$SLEEP
[ -e "$SCHED_FILE" ] || continue
[ "`cat $SCHED_FILE`" == "" ] && continue
TODAY=`date +%Y%m%d`
NOW=`date +%k%M`
while read -r DAY START FINISH CHAN NAME; do
#printf "$DAY $START $FINISH $CHAN $NAME\n"
break
done < $SCHED_FILE
if [ $DAY == $TODAY ] && [ $START -lt $NOW ]; then
printf "$red\tOld Entry : Removing $CHAN $START\n"
remove_entry
howlong=1
continue
fi
if [ $DAY == $TODAY ] && [ $START == $NOW ]; then
record_entry
fi
done
exit 0
I think that should be ok now.

[solved]Need help with a bash script for MOC conky artwork.

I need some help with a bash script for displaying artwork from MOC.
Music folders have a file called 'front.jpg' in them, so I need to pull the current directory from MOCP and then display the 'front.jpg' file in conky.
mocp -Q %file
gives me the current file playing, but I need the directory (perhaps some way to use only everything after the last '/'?)
A point in the right direction would be appreciated.
thanks, d
Last edited by dgz (2013-08-29 21:24:28)

Xyne wrote:
You should also quote the variables and output in double quotes to make the code robust, e.g.
filename="$(mocp -Q %file)"
dirname="${filename%/*}"
cp "$dirname"/front.jpg ~/backup/art.jpg
Without the quotes, whitespace will break the code. Even if you don't expect whitespace in any of the paths, it's still good coding practice to include the quotes imo.
thanks for the tip.
here it is, anyhow:
#!/bin/bash
filename=$(mocp -Q %file)
dirname=${filename%/*}
cp ${dirname}/front.jpg ~/backup/art.jpg
then in conky:
$alignr${execi 30 ~/bin/artc}${image ~/backup/art.jpg -s 100x100 -p -3,60}
thanks for the help.
Last edited by dgz (2013-08-29 21:26:32)

Conky with a bash script

I am trying to change the color of my CPU temp text in conky to green, yellow or red based on the CPU temp. I am getting this in my conky:
Temperature: color green33
Here is my conky line:
${voffset 1}${goto 40}Temperature: ${font Droid Sans:style=Bold:size=8}${execpi 120 sensors | grep Core0 | paste -s | cut -c15-18 | xargs ~/.conky/colorize.sh}${hwmon 0 temp 1}°C${color}${font}${alignr}
Here is my bash script:
#!/bin/bash
# colorize.sh
COOL=65
WARM=80
if [[ $1 < $COOL ]];
then
echo "color green"
elif [[ $1 > $WARM ]];
then
echo "color red"
else
echo "color yellow"
fi
exit 0
Any help would be greatly appreciated.
Thanks

Using exec(p)(i) makes your conky run heavier, so, why wouldn't you use the built-in conky variables to achieve the same...
I'm using: (before "TEXT")
template2 ${color2}${if_match ${hwmon \1 temp \2}>75}${color orange}${if_match ${hwmon \1 temp \2}>90}${color red}${endif}${endif}${hwmon \1 temp \2}${color1}
and i call them like: (after "TEXT")
Temp ${template2 0 1}/${template2 1 1}/${template2 2 2}/${template2 2 4}
Of course you need to find out what numbers you need to pass to hwmon...

A bash script to backup system only with modified files

Hi,
I've made a simple bash script to exam which files are modified and needed to be backed up.
It will use:
1. the hash in Pacman's database (/var/lib/pacman/local/<pkg_ver>/files
2. if no hash in the database, calculate it by our self from cache (/var/cache/pacman/pkg/<pkg_ver>.pkg.tar.gz
3. if no cache found, compare build date and last modified date
4. otherwise, this file better be backed up.
Currently it will only print which files are needed to be backed up, but no backup actually happens. (dry run)
And it is only in early development stage, please be careful.
USAGE:
<the script name> <where to backup files, a directory> <the files, or directories, separated by space, that are going to be examined>...
Here is the code.
#!/bin/bash
# usage:
# $1: file to backup
function do_backup() {
echo
function smart_bak() {
pkg=$(pacman -Qo "$1" 2>/dev/null)
if [ 1 -eq $? ] ; then
# No package owns $1 (locally created)
if [ "$1" != "${1%.pacsave}" ] ; then
echo "skip $1 (left by removed package)"
else
echo "backup $1 (local file)"
fi
else
pkg=${pkg#$1 is owned by }
# evaluate
# by hash
cur=$(md5sum $1)
cur=${cur%% *}
pkg_ver=${pkg/ /-}
org=$(grep "^${1:1}" "/var/lib/pacman/local/$pkg_ver/files")
org_hash=${org##* }
if [ "$org" != "$org_hash" ] ; then
# the org hash is in Pacman's database
if [ "$org_hash" = "$cur" ] ; then
echo "skip $1 (original config)"
else
echo "backup $1 (modified config)"
fi
else
# no hash
# find out hash myself?
ARCH=$(uname -m)
if [ -r "/var/cache/pacman/pkg/$pkg_ver-$ARCH.pkg.tar.gz" ] ; then
org=$(tar -Oxzf "/var/cache/pacman/pkg/$pkg_ver-$ARCH.pkg.tar.gz" "${1:1}" | md5sum -)
org_hash=${org%% *}
if [ "$cur" = "$org_hash" ] ; then
echo "skip $1 (original)"
else
echo "backup $1 (modified)"
fi
else
# no cache, may be a AUR package
# fall back to built date?
date=$(pacman -Qi ${pkg% *} | grep "^Build Date")
date=${date#*: }
date=$(date -d "$date" +%s)
mod=$(ls -l $1)
mod=${mod% $1}
mod=${mod#* * * * * }
mod=$(date -d "$mod" +%s)
tmp1=$(expr $mod "+" 60)
tmp2=$(expr $mod "-" 60)
if [ "$date" -le "$tmp1" -a "$date" -ge "$tmp2" ] ; then
echo "skip $1 (the same date)"
else
echo "backup $1 (unknown)"
fi
fi
fi
fi
function smart_bak_dir() {
for i in $(ls -A "$1") ; do
tmp="${1%/}/$i"
if [ -f "$tmp" ] ; then
smart_bak "$tmp"
elif [ -d "$tmp" ] ; then
smart_bak_dir "$tmp"
else
echo "skip $tmp (not a regular file nor a directory)"
fi
done
# usage:
# $1: the directory to store this backup
# $2: directory to evalualte for backup
# function main()
# init
target="$1"
shift
# check
if [ ! -d "$target" -o ! -x "$target" -o ! -w "$target" ] ; then
exit 4
fi
for i in $* ; do
if [ -f "$i" ] ; then
smart_bak "$i"
elif [ -d "$i" ] ; then
smart_bak_dir "$i"
else
echo "skip $i (unknown argument)"
fi
done
Good luck,
bsdson
Last edited by bsdson.tw (2008-12-30 07:53:05)

Thanks for this script. Nice work.
Can we traverse the pacman.log backwards up and rollback each operation (including "installed" in this). Something like:
history=$(tail -n +$(grep -m 1 -n "$1" "$LOG" | cut -d ":" -f 1) "$LOG" | tac | grep -E "(upgraded|installed)" | cut -d " " -f 3-)
Last edited by g33k (2008-11-04 15:08:07)

Bash scripts with rox

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