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Pwd
Shell command that reports the working directory From Wikipedia, the free encyclopedia
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pwd
(print working directory)[1][2][3] is a shell command that reports the working directory path to standard output.[4][5][6][7][8][9][10]
Although often associated with Unix, its predecessor Multics had a pwd
command (which was a short name of the print_wdir
command[11]) from which the Unix command originated.[12] The command 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.[13] It appeared in Version 5 Unix.[14] The version bundled in GNU Core Utilities was written by Jim Meyering.[15]
The command is available in other shells and operating systems including SpartaDOS X,[16] PANOS,[17] and KolibriOS.[18] PowerShell provides pwd
as an alias for the cmdlet Get-Location
. An equivalent command in COMMAND.COM and Command Prompt is the cd
command with no arguments. On Windows CE 5.0, cmd.exe
includes a pwd
command.[19] The OpenVMS equivalent is show default
.
The numerical computing environments MATLAB and GNU Octave include a pwd
function with similar functionality.[20][21]
The command is implemented as a shell builtin in many Unix shells including sh, ash, bash, ksh, and zsh. It can be implemented with the POSIX getcwd()
or getwd()
functions.
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Examples
The following examples are based on a typical Unix-based implementation.
With no arguments, the command writes the working directory path to the terminal:
$ cd /home/example $ pwd /home/example
Display the working directory without any symbolic link info. If at a directory /home/symlinked that is a symlink to /home/realdir:
$ cd /home/symlinked $ pwd -P /home/realdir
Display the working directory with symbolic link info. Note: POSIX requires that the default behavior be as if the -L
switch were provided.
$ pwd -L /home/symlinked
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Shell variables
POSIX shells set the following environment variables while using the cd
command:[22]
- OLDPWD
- The previous working directory
- PWD
- The current working directory
See also
- Breadcrumb (navigation), an alternative way of displaying the work directory
- List of POSIX commands
pushd
andpopd
References
Further reading
External links
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