CD hack with location history

I was on a system that did not have this hack, and it reminded me how useful it is. So I thought I would share it with others.

Some of you may know about pushd and popd commands. The pushd is like the cd, but it watches and remembers where you were. You can then display as many levels as you want. It's like a cd but it keeps a history not only for the last time you used it.

The big problem I have with pushd and popd is that for popd to work, I have to remember to pushd first.

But, like most, by default, I give commands to the terminal using the cd command. By the time I realize popd could be useful.

Now the hack.

Just pass the following code to ~ /.bashrc:

function cd
{
    if [ $# -eq 0 ]; then
        pushd ~ > /dev/null
    elif [ " $1" = " -" ]; then
        pushd "$OLDPWD" > /dev/null
    else
        pushd "[email protected]" > /dev/null
    fi
}

And start a new shell. From that point on, the cd will run pushd and popd will always be available when you need it.

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