Introduction

Your shell maintains a stack of directories to help you move among directories.

Notes

• The pushd command is like the cd command but your current directory is pushed onto the stack before moving to the new directory.
• The popd command will move you back to the directory on the top of the stack.
• The dirs command will list the directory stack:

  
  % pwd
  /u4/visitors/csgst00
  % pushd ~kensmith
  ~kensmith ~
  % ls
  Accounts               calspan                system_admin
  Mail                   cs391                  tmp
  News                   priv                   work
  bin                    scripts
  % pwd
  /u0/csstaff/kensmith
  % popd
  ~
  % pwd
  /u4/visitors/csgst00 
  
  

• pushd with no arguments moves you to the directory on the top of the stack and moves your current directory onto the stack:

  
  % pwd
  /u4/visitors/csgst00
  % pushd ~kensmith
  ~kensmith ~
  % pushd /usr/local/bin
  /usr/local/bin ~kensmith ~
  % dirs
  /usr/local/bin ~kensmith ~
  % pushd
  ~kensmith /usr/local/bin ~
  % popd
  /usr/local/bin ~
  % popd
  ~
  % 
  
  

• You can use the directory stack for command line substitutions.
• dirs -v lists directories on the stack with numbers for each directory.
• You can use =n substitution to access those names:

  
  % pushd ~kensmith
  ~kensmith ~
  % pushd /usr/local/bin
  /usr/local/bin ~kensmith ~
  % dirs -v
  0       /usr/local/bin
  1       ~kensmith
  2       ~
  % ls =1
  Accounts               calspan                system_admin
  Mail                   cs391                  tmp
  News                   priv                   work
  bin                    scripts
  %