Pwd
In Unix-like and some other operating systems, the pwd command
writes the full pathname of the current working directory to the standard output.Implementations
had a pwd command from which the Unix pwd command originated. The command is a shell builtin in most Unix shells such as Bourne shell, ash, bash, ksh, and zsh. It can be implemented easily with the POSIX C functions getcwd or getwd.
It is also available in the operating systems SpartaDOS X, PANOS, and KolibriOS. The equivalent on DOS and Microsoft Windows is the cd command with no arguments. Windows PowerShell provides the equivalent Get-Location cmdlet with the standard aliases gl and pwd.
On Windows CE 5.0, the cmd.exe Command Processor Shell includes the pwd command.
as found on Unix systems is part of the X/Open Portability Guide since issue 2 of 1987. It was inherited into the first version of POSIX.1 and the Single Unix Specification. It appeared in Version 5 Unix. The version of pwd bundled in GNU coreutils was written by Jim Meyering.
The numerical computing environments MATLAB and GNU Octave include a pwd
function with similar functionality. The OpenVMS equivalent is show default.*nix examples
Note: POSIX requires that the default behavior be as if the -L switch were provided.POSIX shells set the following environment variables while using the cd command:
; OLDPWD : The previous working directory.
; PWD : The current working directory.
