pwd

Wat het doet

Zo schrijf je het

pwd [-LP]

Meest gebruikt

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$ als gewone gebruiker# als root (of met sudo)

1. 1Show where you are

   $pwd
   /home/student

   The first command to run when you are lost.

2. 2Show the real folder behind a link

   $cd /etc/alternatives
   $cd -P .
   $pwd -P

   With links, the logical and the physical path can be different.

3. 3Use the current folder in a command

   $tar -czf /tmp/backup-$(basename "$PWD").tar.gz .

   $PWD is the same as pwd; basename takes the last part.

4. 4Save the folder and come back later in a script

   $HERE=$(pwd); cd /tmp && do_work; cd "$HERE"

   Keeps the script predictable.

5. 5Check you are in the right place before a delete

   $pwd && ls

   A two-second check that prevents deleting the wrong files.

6. 6Show the previous folder

   $echo "$OLDPWD"

   The folder that cd - would take you back to.

7. 7Print an absolute path of a file in this folder

   $echo "$(pwd)/config.yaml"

   Good when a tool needs a full path.

8. 8See the difference between logical and physical

   $ln -s /var/log ~/logs; cd ~/logs; pwd; pwd -P
   /home/student/logs
   /var/log

   The first is the path you used, the second the real place.

9. 9Show the folder of a process

   #pwdx $(pgrep -o sshd)

   pwdx shows the current folder of another process (from /proc/PID/cwd).

10. 10Use the program instead of the built-in

    $/usr/bin/pwd -P

    Same result; useful in other shells.

11. 11Put the path in the prompt

    $PS1='[\u@\h \w]\$ '

    \w in the prompt shows the current folder all the time.

Niets past bij dit filter.