Already running with pid 15523 PID PGID SID TTY TIME CMD 9806 9806 20380 pts/1 00:00:00 gnuplot 19087 19087 19058 pts/2 00:00:00 vim 29598 29598 21563 pts/0 00:00:00 vim 31422 31422 31392 pts/9 00:00:00 vim Trying to clobber master 15523 kill 15523: No such process