"Today's collection of one-liners are sure to win some converts.
There's nothing like a quick command that saves you a lot of
trouble and just might impress your boss and coworkers that you're
the cleverest person around.
"The first is the cd -" command that takes you to back to
whatever directory you were previously located in. Need to bounce
between two directories as you make some mighty edits to some
configuration files? No problem. With the "cd -" command, you can
do just that.
$ cd /usr/local/apps/app1/bin
$ cd -
$ vi myapp.cfg
$ cd -
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