I am running 16.04.5 LTS (Xenial Xerus). pgrep version 3.3.10 (from procps-ng).
I just confirmed that the problem still exists. When stringLength is >= 4063, pgrep does not find the bash process. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to procps in Ubuntu. https://bugs.launchpad.net/bugs/1758087 Title: pgrep -f fails for long command lines Status in procps package in Ubuntu: Expired Bug description: If a command line is really long and the search term is toward the end of it, pgrep -f fails to find the process. Experimentally, it appears that the magic number is about 4084. The script below reproduces the problem. If the command line is short, pgrep -f reports both a sleep and a bash process. If the line is too long, pgrep -f only reports the sleep process. # pgrep -f fails if >= 4063, succeeds if < 4063 stringLength=4063 reallyLongString=$(cat /dev/urandom | tr -cd '[:alnum:]' | head -c $stringLength) bash -c "echo $reallyLongString > /dev/null ; sleep 999" 2> /dev/null& pid=$! sleep 1 echo no -f: pgrep -l sleep echo with -f: pgrep -fl sleep pkill sleep To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/procps/+bug/1758087/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
