◆ps
サーバで稼働しているプロセスを確認するコマンド
簡易マニュアル
[root@localhost ~]# ps --help
********* simple selection ********* ********* selection by list *********
-A all processes -C by command name
-N negate selection -G by real group ID (supports names)
-a all w/ tty except session leaders -U by real user ID (supports names)
-d all except session leaders -g by session OR by effective group name
-e all processes -p by process ID
T all processes on this terminal -s processes in the sessions given
a all w/ tty, including other users -t by tty
g OBSOLETE -- DO NOT USE -u by effective user ID (supports names)
r only running processes U processes for specified users
x processes w/o controlling ttys t by tty
*********** output format ********** *********** long options ***********
-o,o user-defined -f full --Group --User --pid --cols --ppid
-j,j job control s signal --group --user --sid --rows --info
-O,O preloaded -o v virtual memory --cumulative --format --deselect
-l,l long u user-oriented --sort --tty --forest --version
-F extra full X registers --heading --no-heading --context
********* misc options *********
-V,V show version L list format codes f ASCII art forest
-m,m,-L,-T,H threads S children in sum -y change -l format
-M,Z security data c true command name -c scheduling class
-w,w wide output n numeric WCHAN,UID -H process hierarchy
使用例
[root@localhost ~]# ps -ef
UID PID PPID C STIME TTY TIME CMD
root 1 0 0 22:18 ? 00:00:02 /sbin/init
root 2 0 0 22:18 ? 00:00:00 [kthreadd]
root 3 2 0 22:18 ? 00:00:00 [migration/0]
root 4 2 0 22:18 ? 00:00:00 [ksoftirqd/0]
root 5 2 0 22:18 ? 00:00:00 [watchdog/0]
root 6 2 0 22:18 ? 00:00:00 [events/0]
root 7 2 0 22:18 ? 00:00:00 [khelper]
root 80 2 0 22:18 ? 00:00:00 [kintegrityd/0]
root 82 2 0 22:18 ? 00:00:00 [kblockd/0]
root 84 2 0 22:18 ? 00:00:00 [kacpid]
root 85 2 0 22:18 ? 00:00:00 [kacpi_notify]
root 141 2 0 22:18 ? 00:00:00 [cqueue]
root 145 2 0 22:18 ? 00:00:00 [ata/0]
root 146 2 0 22:18 ? 00:00:00 [ata_aux]
root 148 2 0 22:18 ? 00:00:00 [ksuspend_usbd]
root 153 2 0 22:18 ? 00:00:00 [khubd]
root 156 2 0 22:18 ? 00:00:00 [kseriod]
～省略～
全てのプロセスを表示します。