Easily bookmark commonly used directories.
to install, copy the .bookmarks script to your home directory and add this line to .bashrc or .zshrc:
source ~/.bookmarks
to bookmark the current directory using name "blah":
mark blah
to change to a directory bookmarked as "blah":
@blah
to get a directory name as a variable, use:
$_blah
example:
mv file $_blah
to remove a bookmark, remove them from the end of the .bookmarks file