PushD - Push current working directory to stack and change to new directory

Usage: pushd DIRECTORY

Works like cd but stores the current directory in a stack so it can be fetched

back later with the popd command.

Examples:

1.Workbench:> pushd ram:

1.Ram Disk:> pushd work:

1.Work:> popd

1.Ram Disk:> popd

1.Workbench:>