Taking `pushd` & `popd` to next level ​

Problem ​

I assume you are already aware of the pushd and popd.

Sometimes, When you pushd, you might need directory you navigated from. For example:

pwd # ~/foo
zip -r foo.zip foo
pushd ~/bar
unzip ~/foo/foo.zip 

In last line, You need previous directory name.

Solution ​

You can leverage $OLDPWD variable to get previously navigated directory.

pwd # ~/foo
zip -r foo.zip foo
pushd ~/bar
unzip $OLDPWD/foo.zip 

Bonus ​

Completely following DRY principal:

pwd # ~/foo
ZIP_NAME=foo.zip
zip -r $ZIP_NAME foo 
pushd ~/bar
unzip $OLDPWD/$ZIP_NAME 

We added ZIP_NAME variable to avoid repeating foo.zip in both commands.