In Bash and many modern POSIX shells, `pwd` is a builtin, not to mention an environment variable ${PWD}, but the POSIX system should also provide an external co

In Bash and many modern POSIX shells, `pwd` is a builtin, not to mention an environment variable ${PWD}, but the POSIX system should also provide an external command, such as `/bin/pwd` that would operate on the filesystem, rather than semantically tracking your shell activity. https://manpages.ubuntu.com/manpages/stonking/man1/pwd.1.html https://manpages.ubuntu.com/manpages/stonking/man1/pwd.1.htm...