Using the caret (^) character to correct mistakes. Imagine you write something like this: # moutn -o ro -o remount /dev/hda0 / Arg! I should have written mou

Using the caret (^) character to correct mistakes. Imagine you write something like this: # moutn -o ro -o remount /dev/hda0 / Arg! I should have written mount, not moutn! Easy fix: # ^moutn^mount I find it better than editing the last line (with cursor). It even works at boot and without 'doskey-like' arrow history.