What does command ps ef doe11/29/2023 ![]() ![]() You can also see that both greps are connected to the same pipeline (id 57573438) and that the STDOUT ( 1) of the first process is connected to the STDIN ( 0) of the second process. ![]() You can see the state of the grep process in the /proc tree: grep State /proc/28814/status 3 GNU long options, which are preceded by two dashes. 2 BSD options, which may be grouped and must not be used with a dash. On the other hand, users Jones, Doe, and Roe cannot kill that process because. 2 Answers Sorted by: 20 man ps says: This version of ps accepts several kinds of options: 1 UNIX options, which may be grouped and must be preceded by a dash. Mtak 28815 28799 0 12:35 pts/17 00:00:00 grep -color=auto foo Sometimes a command does not fit on a single line in your window, or in. Results in: mtak 28813 28799 0 12:35 pts/17 00:00:00 tar -zcvf test.tgz /lib/ A process has many many fields (properties) associated, and ps (1) allow to select which of them should be displayed. The shell does not buffer the output and hold it until one process has completed and then transfers it to another process.įor example: tar -zcvf test.tgz /lib/ | grep bla | grep foo | grep bar E.g., ps -ef -forest ps -u josue -forest shows parent/child relationships for. See for more information on pipes and streams. You can use the tab key to complete a partially-typed command.Use man ps and man more to see the description for these commands. When piping commands, all processes are started at the same time and they just sleep (block) until I/O enters/exits them. 2 Answers Sorted by: 1 With ps -ef more you pipe the output from ps to more, so you can scroll through the results of ps.
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