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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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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182 views

How to ignore an autocmd in vim's undo history?

I have the following autocommand, which basically strips whitespace at the end of each line. Unfortunately, at each save, it inserts a step into the undo to jump to the beginning to the file, which is ...
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1answer
406 views

Notepad++ Undo History wanted

I cannot seem to find a history in Notepad++ showing you all the actions you did. Sometimes you might not be sure anymore what the next Undo action would do. Does this feature really not exist or I ...
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1answer
55 views

Instead of “mv filename.sql newfolder” I did “mv filename.sql /newfolder” and wiped out a bunch of files?

Like I said, I moved a bunch of sql files but instead of moving them to a directory I seem to have renamed them and put them all in the root directory as one file named "newfolder" Can I undo this or ...
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1answer
45 views

Show hidden icons in icon tray through group policy

Had previously hidden the icon tray through group policy and would now like to add the volume control/sound icon back to the tray. I have disabled the "hide the notification area" and forced the ...
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1answer
27 views

Undo or Redo on specific lines only

I am working on a file and made some changes I'd like to undo. Is there anyway that I can undo changes that were made in the part of the file where my insertion point currently is? I do not want to ...
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1answer
142 views

did cmd change in Windows 7, how to undo?

Windows 7 was not allowing me to add a new folder within folders. So I made the command prompt change using the icacls command below. This includes 'desktop', which included all the shortcut icons. ...
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1answer
74 views

reactivate WD Smartware VCD for My Book for Mac

I have used: sudo sh -c "echo UUID=`diskutil info /Volumes/WD\ SmartWare/ | grep 'UUID' | awk '{print $NF}'` none hfs rw,noauto 0 0 >> /etc/fstab" to deactivate the VCD but now want to lock ...
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Viewing Windows Explorer’s complete Undo history

Background Windows Explorer maintains a list of file operations so that you can undo them (10 operations up to XP and 32 from Vista). You can see the last operation without performing it by opening ...
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System-Wide Undo Operations

Many, if not all applications have undo and redo operations available, but sometimes I want to undo or redo actions I have done outside a program that has affected it. For instance, say I have ...
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56 views

CTRL+Z (Undo) history/log command? How to revert?

(Note: I'm using Windows 8.1 x64) So, after decades of using Windows I've just discovered the single most destructive command, and it's an everyday shortcut... The CTRL+Z... Yup, that's right. ...
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264 views

sublime text: Undoing an “undo followed by typing”?

Wondering if (perhaps via the console in Sublime?) it is possible to recover from a multi-line undo, followed by typing something (a paste, in my case)? IOW, I un"did" a bunch of stuff, meant to just ...
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Restoring files from Undo action win8

Instead of making Paste I did accidentally Undo (ctrl+z). Files didn't pass from the recycle bin, they just dissappeared. Is there a way to recover those. This always bothered me form windows.
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254 views

Cropping image accident in Photoshop CS5

I was trying to crop an image in a layered .psd file, and instead cropped out the entire rest of the layers and only have the one little image I was trying to crop. It won't let me revert. How do I ...
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272 views

cancel last chmod?

Today is a great day for me - anyone can suggest other restore method than from tape with regard to my last glorious command sudo chmod -R o=rw / Btw I am on HFS+