about exit

[thebeatlesguru]

when i use "exit" in > ,it could exit the system,but if i write a shell script:
#!/bin/sh
exit

it could not exit system,so i wanna know what command i can use in shell to exit system,not exit shell

[Deepak Extross]

If your shell script is called myexit.sh, try calling it like this:
. myexit.sh
rather than just
myexit.sh

Hope this helps.

[Steven Sim Kok Leong · Accepted solution]

Hi,

Insert the following statement in your script where you want to exit the system:

kill -9 `ps -fp $PPID|awk '{print $2}'|tail -1`

Hope this helps. Regards.

Steven Sim Kok Leong

[Deepak Extross]

using 'logout' instead of 'exit' should work too.

[thebeatlesguru]

i know that could use logout instead of exit

however ,steven,can u explain the statement :
kill -9 `ps -fp $PPID|awk '{print $2}'|tail -1`

i cant understand it exactly

[Steven Sim Kok Leong]

Hi,

Actually the following is sufficient in your script:

kill -9 $PPID

PPID (parent process id) is PID (process id) of the login shell (parent) spawning off your shell script (child process)

Hope this helps. Regards.

Steven Sim Kok Leong

[Tom Burba]

Only root has rights to do this. How can a user do it?