Multics commands

ls is a shell command for listing files including special files such as directories. Originally developed for Unix and later codified by POSIX and Single UNIX Specification, it is supported in many operating systems today, including Unix-like variants, Windows (via PowerShell and UnxUtils), EFI, and MSX-DOS (via MSX-DOS2 Tools).

pwd (print working directory) is a shell command that reports the working directory path to standard output.

command of DOS, OS/2, Microsoft Windows, Unix and Unix-like operating systems

Unix command