How to undo "terminal" misuse

Is there a way to undo something which has been done using "terminal", or is there a way to see a history of which commands have been recently used?

launch terminal and press the up arrow.

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How to undo terminal commands

...sigh... being new to MAC I shouldn't have just assumed I could putz around and make changes like I used to with PC.
So, I use Gradebook (I'm a teacher) and unfortunately, it's reliant on Java.
So the other day I made the mistake of updating Java and it sent my world into a tailspin. Gradebook suddenly stopped working. It would just bounce in my dock but never open.
Then I found out it was having issue with the new Java. So I found instructions to reverse the Java update and go back to Java 6 here which required me to go into terminal and make changes: http://support.apple.com/kb/HT5559?viewlocale=en_US
I did that. Now everyone claims that Gradebook fixed their issue with the new Java. But I'm still having that bouncing then nothing problem. So someone suggested I upgrade to Mavericks. So I did... and when I re-tried Gradebook it told me I needed to download Java 6 for it to work, so I got excited thinking my problems were solved. But nope... bouncing in the dock then nothing.
Now I'm thinking those changes I made in Terminal are what the problem is. So I googled how to remove those entries and I went into .bash and deleted them (kept a copy of what I was deleting though, just in case) Didn't work. So now I've read that I have to UNDO my changes and not delete them. But I have no idea how to do that.
This was my entire history in that .bash file:
/Applications/Android\ File\ Transfer.app/Contents/MacOS/Android\ File\ Transfer ; exit;
'lookupd -flushcache''lookupd -flushcache'
'lookupd -flushcache'
'lookupd -flushcache
'lookupd -flushcache'
/Applications/Gradebook.app/Contents/MacOS/JavaApplicationStub ; exit;
sudo mkdir -p /Library/Internet\ Plug-Ins/disabled
sudo mkdir -p /Library/Internet\ Plug-Ins/disabled
sudo mv /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/disabled
sudo ln -sf /System/Library/Java/Support/Deploy.bundle/Contents/Resources/JavaPlugin2_NPAPI .plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Commands/javaws /usr/bin/javaws
sudo mkdir -p /Library/Internet\ Plug-Ins/disabled
sudo mkdir -p /Library/Internet\ Plug-Ins/disabled
sudo mv /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/disabled
sudo ln -sf /System/Library/Java/Support/Deploy.bundle/Contents/Resources/JavaPlugin2_NPAPI .plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Commands/javaws /usr/bin/javaws
sudo ln -s /System/Library/Java/Support/CoreDeploy.bundle/Contents/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo ln -s /System/Library/Java/Support/CoreDeploy.bundle/Contents/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo ln -s /System/Library/Java/Support/CoreDeploy.bundle/Contents/JavaAppletPlugin.plugin /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo update_prebinding -root / -force
sudo update_prebinding -root/-force
exit
sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Commands/javaws /usr/bin/javaws
man sudo
sudo ln -sf /System/Library/Frameworks/JavaVM.framework/Commands/javaws /usr/bin/javaws
The red are the ones I put in. That blue one references Gradebook but I don't recall entering that.
Help me please??? I'd really, really appreciate it!

There are instructions at the bottom of the page you linked to that tell you how to undo it.
Editing the .bash_history file only removes commands from the recorded history, it doesn't undo them. Although doing that isn't going to cause any problems, it does reveal a tendency to fiddle with "arcane knowledge" without fully understanding it. That's very, very bad, as doing the wrong thing in the Terminal could easily cause irreversible damage to the system that can only be fixed by reinstalling. It could even lead to data loss.

How to undo terminal Command ?

Hey All ,
I recently added a command to increase my magic mouse tracking but i would like to undo it, command is below.
defaults write -g com.apple.scaling 5.0
thank you

First google hit agrees with Kappy. 1.0 is the default value. So to undo your damage, type:
defaults write -g com.apple.scaling 1.0
...into the console. If you had written a longer, more complex command into the console, occasionally it helps to use up-arrow to go back to what you just wrote, and then edit it. In your case however you probably had to restart finder or logout/logon to make the change stick, right?

Help, i made a terminal command and i don't know how to undo it.

i found my long lost folder of terminal commands.. and i forgot what this one did, so i clicked it (i made the commands into a "unix executable file").. and all my files on my desktop are now hidden.. the only way to find them is to type in the file name into finder.
the command i typed in was
while (true) do
chflags hidden ~/Desktop/*
done
and now everything on my desktop is gone, and i dont know how to undo it, I undid once about 3 months ago when i wrote it, but i forgot what i did. I tried counterering the command with others but it isn't doing anything. thank you
edit: i know this command cant destroy my system because it wasn't a sudo, but still, i had all my class work on my laptop and now it's all invisible

Hi, try this...
while (true) do
chflags nohidden ~/Desktop/*
done

I found My iPhone contacts on my friends Iphone we both have 4s! But we use the same apple ID and ICloud ID! How can undo what happened? all my private stuff is now on his phone!!! help me plz!!?

I found My iPhone contacts on my friends Iphone we both have 4s! But we use the same apple ID and ICloud ID! How can undo what happened? all my private stuff is now on his phone!!! help me plz!!?

Of course if you are both connected to the same iCloud account you have the same contacts - what did you expect?. The contacts live on the server and are read from there by the devices; so as you've both managed to sync your contacts up to iCloud they are now inextricably mixed. You can only delete your contacts by deleting individual ones, and doing that will delete them from your phone as well.
You can only unravel this by
1. In the iCloud contacts page at http://icloud.com, select all the contacts, click on the cogwheel icon at bottom left and choose 'Export vCard'.
2. Sign out of System Preferences>iCloud
3. Create a new Apple ID and open a new iCloud account with it for your own use.
4. Import the vCard back into the iCloud contacts page.
5. Go to http://icloud.com and sign in with the original ID. This is now his ID. Work through the contacts individually deleting the ones you don't want him to have. When done sign out and advise him to change his password.
6. Go to the new iCloud account and delete his contacts individually.
Of course if you have also been syncing calendars and using the same email address there are problems with doing this.

How to undo an order of transport which has returned an error code 8

Hi experts,
While transporting an installation of business content, it has removed a lot of transfert rules. Could you tell me how to undo this transport from quality to the production envirenenmet. Unfortunately I dident check the transport order which has returned the code error 8.
Thank you for your answer.
Regards.

Hi Joseph,
Transport all the objects you want in the order again with a new request. This will replace all the transported objects and you will get all the objects transported.
Regards,
KK.

How to use Terminal with KeySpan USB serial adaptor cable?

I own a KeySpan model USA-19HS to use with our MacBookPro when working on clients networking equipment that require serial communication. I have used ZTerm with excellent luck, but it costs, and is yet another application that I dont really want. I would like to know if any one out there has exacing instructions on how to use Terminal with this adaptor. If I could write a file that had, say, the couple most common settings (9600-8-n-1, 57600-8-n-1, et cetera) that I could simply click on, to open a new Terminal window with those settings, then simply close that, and open a new window (apple+n) in order to get back to a default settings terminal window. All feedback is most appreciated.
Thanks so much, Jason Sjobeck

Hi, Jason. Welcome to the Discussions.
You wrote: "All feedback is most appreciated."OK.
1. Have you considered discussing this with Keyspan Support?
2. Have you read the section "OSX has Terminal.app - why do I need ZTerm?" on the ZTerm Home Page? That seems to explain why one needs an app like ZTerm.
3. A quick search of Keyspan's FAQ for your product and terminal doesn't yield much more than how to find the serial ports using Terminal.
Likewise, this Google search also yields little, and variants of that search of such weren't particularly help either.
It appears your inquiry seems to be a somewhat esoteric topic.
4. Apparently, ZTerm X is a bit long in the tooth and there's no Universal Binary for it. It sounds, however, like you've tried it running on your MBP under Rosetta, yes?
5. In researching alternatives to ZTerm for you, I note the followng:• The comment from "Reverb" on this page suggests C-Kermit or Kermit as a free alternative.
• This tip on Mac OS X Hints cites Minicom as another option.6. You may want to try your question on the Unix Discussion.
Good luck!
Dr. Smoke
Author: Troubleshooting Mac® OS X

How to undo "This solved my question" on this Using iPhone forum?

How to undo "This solved my question" on this "Using iPhone" forum?
new to this forum... how do you undo this?

**** lol, In that case they should give a warning or some type of "You sure?" yes/no. I clicked completely by mistake. anyways...

How to install Terminal License on server?

How to install Terminal License on server?

Hi Pratibha,
You can follow the link provided by Sinisa. If still any other help then kindly let us know.
Thanks.
Dharmesh Solanki
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

I tried opening a pdf file and I set it to use always and firefox which did not work, I was wondering how to undo that and what I should use to open pdf files in the future?

I was attempting to open a document from a frequently used site, I had never been on, on my new mac however. I attempted to open the pdf file and was given the option of which program to use to open it, I mistakenly clicked use always and firefox as the program with which to open pdf files. I do not know how to undo this or what I should do in the future to access the pdf files.

Hi Melfour-
Here is a Support article detailing how to work with your Firefox PDF preferences:
[[Opening PDF files within Firefox]]
Hope that helps.

How to undo hybernate mode in laptop when the lid is laid down?

How to undo the default hybernate mode when the laptop is closed? It is neede to work with external monitor, keyboard and mouse, keeping the laptop shut.

Hello,in Windows 8.1 you should go to Control Panel, then to Power Options and there should be something like "Require a password on wakeup". There you can choose the action, that should be taken after closing the lid.

How much UNDO does a query need?

It seems that due to a gigantic delete, I am running out of UNDO. How can I see exactly how much undo a query needs?
Searching on the web, I found this:
select sq.sql_text sql_text, t.USED_UREC Records, t.USED_UBLK Blocks, (t.USED_UBLK*8192/1024) KBytes from v$transaction t,
v$session s,
v$sql sq
where t.addr = s.taddr
and s.sql_id = sq.sql_id
and s.username = 'blah'
, which is fine, but it seems to be returning results for only running queries. In other words, when the delete query I am investigating is executed, the above select returns no rows. Is there a way to modify it to return also queries that have been executed?
Any help is welcome.
Message was edited by:
user622271

Hi,
It seems that you need to make an outer join between v$sql and v$session views [s.sql_id = sq.sql_id(+)] ... For more information is if this [url http://forums.oracle.com/forums/thread.jspa?messageID=1756927&#1756927]thread can help you.
Cheers
Legatti

How to undo the "Paste into" in Indesign?

Does anyone know how to undo the "Paste into" in Indesign? I have used the "paste into" to mask a list of items but now i want to redo it so that I can see the whole list of items again. Is it possible?
thanks!

Same way you undo anything else, Edit > Undo, or are you asking if you can come back days later and remove the content, then put it elsewhere? Sounds like maybe the latter, and my guess is you pasted a text frame into another frame, so you need to select the outer frame, then Object > Select > Content, or just use the Direct Select tool to select the content, then cut and finally paste it someplace else.

I wrote 6 pages in a document. I wanted to put page 4 before page 3 and could not move them. They had a box around 5 pages and I don't know how I did that, nor do I know how to undo that.

I wrote 6 pages in a document. I wanted to put page 4 before page 3 and could not move them. They had a box around 5 pages and I don't know how I did that, nor do I know how to undo that.

terrymanga wrote:
Guess that's not the solution.
And you guessed wrongly.
On my side, I guess that before opening the menu, you clicked somewhere out of the pages (in the thumbnails areas for instance).
Re try after cliking at the bottom of a page.
The feature is really described in Pages User Guide.
Yvan KOENIG (VALLAURIS, France) mardi 27 septembre 2011 22:51:27
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.0
My iDisk is : <http://public.me.com/koenigyvan>
Please : Search for questions similar to your own before submitting them to the community

Hi guys, I have a big problem! My bookmark shortcut entry(command D) does not work anymore and do you know by any changes how to undo resetting of Safari? Thnx a million :)

Hi guys, I have a big problem! My bookmark shortcut entry(command D) does not work anymore and do you know by any changes how to undo resetting of Safari? Thnx a million

Try troubleshooting the Safari .plist file.
Quit Safari.
Open a Finder window. Select your Home Folder in the Sidebar on the left. It has a small house icon. Then open the Library folder then the Preferences folder.
Move the com.apple.Safari.plist file from the Preferences folder to the Desktop. Relaunch Safari. Try a bookmark.
If that didn't help, check Safari / Preferences then select the Extensions tab. If you have any installed, turn that off, quit then relaunch Safari.
If Extensions aren't the issue, reset Safari. From the menu bar click Safari / Reset Safari. Select the top 7 buttons, click Reset.

How to undo "terminal" misuse

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