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2011-03-12 - Confoo 2011 presentation
Slides are available from the commandlinefu presentation at Confoo 2011: http://presentations.codeinthehole.com/confoo2011/
2011-01-04 - Moderation now required for new commands
To try and put and end to the spamming, new commands require moderation before they will appear on the site.
2010-12-27 - Apologies for not banning the trolls sooner
Have been away from the interwebs over Christmas. Will be more vigilant henceforth.
2010-09-24 - OAuth and pagination problems fixed
Apologies for the delay in getting Twitter's OAuth supported. Annoying pagination gremlin also fixed.

Top Tags



Figure out what shell you're running

Terminal - Figure out what shell you're running
echo $0
2011-02-05 16:42:48
User: chmurli
Functions: echo
Figure out what shell you're running


There are 4 alternatives - vote for the best!

Terminal - Alternatives
readlink -f /proc/$$/exe
ps -p $$
2011-02-05 16:22:17
User: psykotron
Functions: ps

short, sweet, and works after sudoing a new shell.

ps -o comm= -p $$
2011-02-05 11:54:42
User: depesz
Functions: ps

First version was "ps uw -p $$", but current "ps -o comm= -p $$" just gives shell name

ps ho command $$
echo $SHELL
2011-02-05 11:06:40
User: lockie
Functions: echo

Isn't that simplier huh?

Know a better way?

If you can do better, submit your command here.

What others think

This doesn't work properly. Look at this snippet:

cat test.sh

readlink -f /proc/$$/exe

echo $SHELL

zsh test.sh



When running a script the $SHELL variable will not change, whereas the PID will, so it's more reliable.

Comment by j_melis 219 weeks ago

echo $0 is the best

Comment by RanyAlbeg 219 weeks ago

Yes you're right. Thanks!

Comment by putnamhill 218 weeks and 5 days ago
echo $0

returns the name of the current shell or program.

Pop it into a script and run it and it will return the name of the script not the name of the shell.

echo $SHELL is more reliable.
Comment by zlemini 218 weeks and 4 days ago

"echo $0" in guake returns "-" and in gnome-terminal returns "-bash".

If you run "exec -a csh bash", then in $0 you have "csh"

Comment by etam1024 218 weeks and 3 days ago

Your point of view

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