pushd and popd
In computing, pushd
and popd
are commands used to work with the command line directory stack.[1][2] They are available on command-line interpreters such as 4DOS, Bash,[3] C shell, tcsh, Hamilton C shell, KornShell, cmd.exe, and PowerShell for operating systems such as DOS, Microsoft Windows, ReactOS,[4] and Unix-like systems.
Original author(s) | Bill Joy |
---|---|
Developer(s) | Various open-source and commercial developers |
Operating system | Unix and Unix-like, DOS, Windows, ReactOS |
Type | Command |
Overview
The pushd
command saves the current working directory in memory so it can be returned to at any time, optionally changing to a new directory. The popd
command returns to the path at the top of the directory stack.[5][6] This directory stack is accessed by the command dirs
in Unix or Get-Location -stack
in Windows PowerShell.
The first Unix shell to implement a directory stack was Bill Joy's C shell. The syntax for pushing and popping directories is essentially the same as that used now.[7][8]
Both commands are available in FreeCOM, the command-line interface of FreeDOS.[9]
In Windows PowerShell, pushd is a predefined command alias for the Push-Location
cmdlet and popd is a predefined command alias for the Pop-Location
cmdlet. Both serve basically the same purpose as the pushd
and popd
commands.
Syntax
Pushd
pushd [path | ..]
Arguments:
path
This optional command-line argument specifies the directory to make the current directory. Ifpath
is omitted, the path at the top of the directory stack is used, which has the effect of toggling between two directories.
Popd
popd
Examples
Unix-like
[user@server /usr/ports] $ pushd /etc
/etc /usr/ports
[user@server /etc] $ popd
/usr/ports
[user@server /usr/ports] $
Microsoft Windows and ReactOS
C:\Users\root>pushd C:\Users
C:\Users>popd
C:\Users\root>
DOS batch file
@echo off
rem This batch file deletes all .txt files in a specified directory
pushd %1
del *.txt
popd
echo All text files deleted in the %1 directory
References
- Pushd - change directory/folder - Windows CMD - SS64.com
- Popd - Windows CMD - SS64.com
- Bash Reference Manual: Directory Stack Builtins
- https://github.com/reactos/reactos/blob/master/base/shell/cmd/dirstack.c
- Microsoft TechNet Pushd article
- Microsoft TechNet Popd article
- Chapter 14 – 14.6 The Shells' pushd and popd Commands
- man tcsh "TCSH(1)". Archived from the original on 2014-03-10. Retrieved 2014-11-03.
- FreeCOM - FreeDOS
Further reading
- Frisch, Æleen (2001). Windows 2000 Commands Pocket Reference. O'Reilly. ISBN 978-0-596-00148-3.
- McElhearn, Kirk (2006). The Mac OS X Command Line: Unix Under the Hood. John Wiley & Sons. ISBN 978-0470113851.
External links
Wikibooks has a book on the topic of: Guide to Windows Commands |