Public bug reported: Binary package hint: procps
% pgrep -g 0 pgrep: No matching criteria specified Usage: pgrep [-cflvx] [-d DELIM] [-n|-o] [-P PPIDLIST] [-g PGRPLIST] [-s SIDLIST] [-u EUIDLIST] [-U UIDLIST] [-G GIDLIST] [-t TERMLIST] [PATTERN] this bug is reportedly fixed in upstream release 3.2.7 (see http://procps.sourceforge.net/changelog.html) ** Affects: procps (Ubuntu) Importance: Untriaged Status: Unconfirmed -- error with -g option to pgrep/pkill https://launchpad.net/bugs/58122 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs