On 11/21/19 7:52 AM, home user wrote: > > if ! pidof ksysguard > /dev/null ; then ... > Thank-you Patrick. > I studied the man page for pidof. As I understand it, it implies that pidof does not work across login names; user2 cannot see user1's processes: > ----- > [from the description of option "-c"] > This option is ignored for non-root users, as they will be unable to check the current root directory of processes they do not own. > ----- > So this will not work. [egreshko@meimei ~]$ whoami egreshko [egreshko@meimei ~]$ pidof kwrite 22679 [egreshko@meimei ~]$ ps -eaf | grep 22679 maria 22679 22630 0 07:55 pts/1 00:00:00 kwrite You misunderstand the meaning of -c. It has to do with the directory when the command was started. In order to determine that, a process must be able to known what /proc/$PID/cwd is. For a "maria" process [egreshko@meimei 22679]$ pwd /proc/22679 [egreshko@meimei 22679]$ ll cwd ls: cannot read symbolic link 'cwd': Permission denied lrwxrwxrwx. 1 maria maria 0 Nov 21 07:55 cwd Conversely, for one of "egreshko" processes.... [egreshko@meimei 22833]$ pwd /proc/22833 [egreshko@meimei 22833]$ ll cwd lrwxrwxrwx. 1 egreshko egreshko 0 Nov 21 08:01 cwd -> /home/egreshko -- The key to getting good answers is to ask good questions. _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx
