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ps ax | grep progand it gave me:40697 pts/0 S+ 0:00 grep --color=auto progAnd when I typeps ax | grep progrit gives me:40699 pts/0 S+ 0:00 grep --color=auto progrWhat is the proces sif? 40697 or 40699?ps ax (or l,-f,etc) |grep xyzthepslist includes thepsandgrepprocesses themselves and thegrepmatches and shows itself, in addition to the desired process(es). If looking for program name only not commandline argument(s), usingpsdefault format (noxetc) avoids this. Otherwise, common workarounds are|grep program |grep -v grepor|awk '/program/&&!/awk/'or a pattern tweak like|grep '[p]rogram'. Or better just usepgrep(with-lif you want to manually verify) which excludes itself, plus defaults to all processes.