How do i use $CDPATH in bash?

pangolinsos

CDPATH is what PATH is for binaries, it is a search path for directories.
When it is not set

$ cd doc
bash: cd: doc: No such file or directory

When set. You can set it in your .bashrc.

$ CDPATH=/usr/local:/usr/share

Then change directory to some directory inside /usr/local for instance.

$ cd bin
/usr/local/bin
$ 
$ cd etc
/usr/local/etc

Now you do not have to use full path names, for locations you use frequently.