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Tip #185   CDPATH

This is a little known and very underrated shell variable. CDPATH does for the cd built-in what PATH does for executables. By setting this wisely, you can cut down on the number of key-strokes you enter per day.

For example: 
$ export CDPATH='.:~:/usr/local/apache/htdocs:/disk/backups'

Now, whenever you use the cd command, bash will check all the directories in the $CDPATH list for matches to the directory name.
 
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