Undo is a command in many computer programs. It erases the last change done to the document reverting it to an older state. In some more advanced programs such as graphic processing, undo will negate the last command done to the file being edited.

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undo Linux's rm? [duplicate]

Possible Duplicate: UNDO LINUX Trash Command Hi, Is there any simple way to undo an rm command? The question is purely theoretical; I have NEVER deleted the log of a benchmark queue who ...
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Undo the Linux trash command

Can we undo operations done in a terminal, for example, file deletion through rm? Solutions obtained: Aliasing Undelete utilities Backup utilities LibCrash Versioning (FUSE)
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How can I undo or rollback an “apt-get upgrade” command on Ubuntu?

Is there a way in Ubuntu to rollback or undo the last upgrade after doing an apt-get upgrade if you don't like the results?
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How to determine exactly which file actions will be reverted when doing an Undo in Windows Explorer?

I had a brain fart and forgot which was the last file action I performed in Windows Explorer on XP SP3. Explorer offers an undo but I am not 100% confident I remember what was the last operation I ...
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2answers
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Are there any extensions or tricks to reopen several closed tabs in Safari

I know Safari 5 (on OSX) allows undoing of a recently closed tab with Cmd-Z. However, that works only for the very last closed tab. That is, I cannot press CmdZ twice to reopen the last two closed ...
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4answers
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How to undo an accidental drag and drop

This happens to me in Windows Explorer (and in Outlook): I mean to open a folder and manage to move the mouse and accidentally drag the whole folder ... somewhere. Usually I notice, but not always ...
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2answers
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How can I get Excel's undo/redo functionality to work in a more traditional *per window* manner (and not for the entire instance of Excel)?

This has been driving me crazy lately. I'm not used to having having a program have a global undo/redo functionality (as in when I undo something, it will undo the last action in any currently open ...
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2answers
183 views

Search in Vim's undo history

I have a "weird" usage pattern in vim that I often use - or have to use, depending on how you view it. What normally happens is this: I enter some text, do some editing, then remove a bit of text ...
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How can I recover from mistaken 'rm *'?

I just typed rm * in the wrong directory by mistake. I had the wrong terminal window highlighted. What are my options?
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Once you've enabled tethering on your iPhone, how do you undo this?

Sort of in response to this question, how do I remove the mobile config that gets installed on the iPhone? Are there any side-effects as a result of removing that configuration such as the data ...