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#bash #tips Running a command from your history

Sometimes you know that you ran a command a while ago and you want to run it again. You know a bit of the command, but you don't exactly know all options, or when you executed the command.

Of course, you could just keep pressing the Up Arrow until you encounter the command again, but there is a better way. You can search the bash history in an interactive mode by pressing Ctrl + r.

This will put bash in history mode, allowing you to type a part of the command you're looking for. In the meanwhile, it will show the most recent occasion where the string you're typing was used. If it is showing you a too recent command, you can go further back in history by pressing Ctrl + r again and again. Once you found the command you were looking for, press enter to run it. If you can't find what you're looking for and you want to try it again or if you want to get out of history mode for an other reason, just press Ctrl + c. By the way, Ctrl + c can be used in many other cases to cancel the current operation and/or start with a fresh new line.
Source: http://www.linuxtutorialblog.com/post/tutorial-the-best-tips-tricks-for-bash
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