Marcel keeps track of the current directory, and a directory stack, as in other shells. (The current directory is always the top item on the directory stack.) The commands for operating on directories should be familiar:

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• pwd: prints the current directory.

• cd: Change the current directory to the one specified on the command line.

• pushd: Push the specified directory onto the directory stack. Without arguments, swap the top two directory stack items. This causes the current directory to change.

• popd: Remove the top item on the directory stack, causing the current directory to change.

• dirs: Prints the directory stack, starting with the current directory. (The directory stack simply reports the value of the DIRS environment variable.)