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[Ralf Mardorf]

On Mon, 4 Apr 2016 20:35:36 +0200, I wrote:
>killall name_off_application || killall -9 name_off_application

First just "killall ..." and if needed, then "killall -9 ...".

Actually the "||" means "or", resp. it's for "if the first command
should fail, then run the next command", but you might need to interrupt
the first kill command by pushing "Ctrl+C", assumed nothing should
happen, so I would run them independent from each other, not in one
line.