Proper way to exit command line program

Question

I m using mac linux and I know that ctrl-z stops the currently running command in terminal  but I frequently see the process is still running when i check the system monitor  What is the right way to stop a command in terminal    Typically I run into this issue when running python or ruby apps  i m not sure if that has something to do with it  just thought I would add that

User · Answer

if you do ctrl-z and then type exit it will close background applications    Ctrl Q is another good way to kill the application

User · Answer

Using control-z suspends the process  see the output from stty -a which lists the key stroke under susp    That leaves it running  but in suspended animation  so it is not using any CPU resources    It can be resumed later   If you want to stop a program permanently  then any of interrupt  often control-c  or quit  often control-   will stop the process  the latter producing a core dump  unless you ve disabled them    You might also use a HUP or TERM signal  or  if really necessary  the KILL signal  but try the other signals first  sent to the process from another terminal  or you could use control-z to suspend the process and then send the death threat from the current terminal  and then bring the  about to die  process back into the foreground  fg    Note that all key combinations are subject to change via the stty command or equivalents  the defaults may vary from system to system

User · Answer

Take a look at Job Control on UNIX systems  If you don t have control of your shell  simply hitting ctrl   C should stop the process  If that doesn t work  you can try ctrl   Z and using the jobs and kill -9   lt job   gt  to kill it  The  -9  is a type of signal  You can man kill to see a list of signals

[unix] Proper way to exit command line program?

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