| -F pidfile | Restrict matches to a process whose PID is stored in the pidfile file. |
| -G gid | Restrict matches to processes with a real group ID in the comma-separated list gid. |
| -M core | Extract values associated with the name list from the specified core instead of the currently running system. |
| -N system | Extract the name list from the specified system instead of the default, which is the kernel image the system has booted from. |
| -P ppid | Restrict matches to processes with a parent process ID in the comma-separated list ppid. |
| -S | Search also in system processes (kernel threads). |
| -U uid | Restrict matches to processes with a real user ID in the comma-separated list uid. |
| -d delim | Specify a delimiter to be printed between each process ID. The default is a newline. This option can only be used with the pgrep command. |
| -f | Match against full argument lists. The default is to match against process names. |
| -g pgrp | Restrict matches to processes with a process group ID in the comma-separated list pgrp. The value zero is taken to mean the process group ID of the running pgrep or pkill command. |
| -i | Ignore case distinctions in both the process table and the supplied pattern. |
| -j jid | Restrict matches to processes inside jails with a jail ID in the comma-separated list jid. The value zero is taken to mean any jail ID. |
| -l | Long output. Print the process name in addition to the process ID for each matching process. If used in conjunction with -f , print the process ID and the full argument list for each matching process. This option can only be used with the pgrep command. |
| -n | Select only the newest (most recently started) of the matching processes. |
| -o | Select only the oldest (least recently started) of the matching processes. |
| -s sid | Restrict matches to processes with a session ID in the comma-separated list sid. The value zero is taken to mean the session ID of the running pgrep or pkill command. |
| -t tty | Restrict matches to processes associated with a terminal in the comma-separated list tty. Terminal names may be of the form tty xx or the shortened form xx. A single dash (‘-’) matches processes not associated with a terminal. |
| -u euid | Restrict matches to processes with an effective user ID in the comma-separated list euid. |
| -v | Reverse the sense of the matching; display processes that do not match the given criteria. |
| -x | Require an exact match of the process name, or argument list if -f is given. The default is to match any substring. |
| signal | A non-negative decimal number or symbolic signal name specifying the signal to be sent instead of the default TERM. This option is valid only when given as the first argument to pkill. |
|
