Print current running shell, PID

ps -p $$
works as well as echo $0, but also prints process id, which pts you're using. echo $SHELL doesn't always get updated when changing shells, so this is a better solution than that. Just one more variation on a theme.
Sample Output
  PID TTY          TIME CMD
28966 pts/9    00:00:00 csh

4
2012-02-09 17:27:45
ps

What Others Think

ps -vp $$ #a little more info
mpb · 441 weeks and 5 days ago
having more than one shell running, anybody knows of a way to show the PID of the shell that more recently executed? My way of sorting a ps search for idle time seems cumbersome...
alexxx · 439 weeks and 6 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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