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This little snippet for your .bashrc or your .inputrc changes the Up/Down arrow behavior to autocomplete what is already typed instead of just go back in history.

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Normally when you press Up in Bash you get the previous command. With these lines that is changed. If you typed vim filename, then top and then again vim and pres up, it will autocomplete to vim filename instead of go back to top.

Either in your .bashrc:

bind '"\e[A": history-search-backward'
bind '"\e[B": history-search-forward'

Or in your .inputrc:

"\e[A": history-search-backward
"\e[B": history-search-forward

Tags: autocomplete , bash , bashrc , inputrc , shell , snippets