To terminate a running process, use the kill command.
You need to specify the PID (Process ID) as an argument, and before executing the kill command, use the ps command to check the PID of the process to be killed.
| root@Lion:~# ps -a ←Displays all processes. PID TTY TIME CMD 10086 pts/0 00:00:00 su 10087 pts/0 00:00:00 bash 10148 pts/1 00:00:00 su 10149 pts/1 00:00:00 bash 10188 pts/0 00:00:00 ps root@Lion:~# kill 10148 ←Terminate PID10148 "su" with the kill command. root@Lion:~# ps 10148 ←Displays the status of PID10148 "su". PID TTY STAT TIME COMMAND ←PID10148 "su" is not displayed because it has stopped |
●Kill the process.
If the process cannot be killed by the normal kill command, there is a way to kill it.
The kill command has an option called signal, which allows you to control the process.
The signal number "9" is assigned as "SIGKILL", and you can kill the process by specifying this signal number or signal as an option, and specifying the PID (process ID) as an argument
| root@Lion:~#ps -a ←Show all processes PID TTY TIME CMD 10086 pts/0 00:00:00 su 10087 pts/0 00:00:00 bash 10279 pts/1 00:00:00 su 10280 pts/1 00:00:00 bash 10315 pts/1 00:00:00 top 10316 pts/0 00:00:00 ps root@Lion:~# kill -9 10315 ←Force termination with signal number as an option |
●Terminate all processes for a specific command.
If you want to use the same command to perform multiple operations and terminate them all, use the killall command.
| root@Lion:~# ps -acx ←Displays the process PID TTY STAT TIME COMMAND 1 ? Ss 0:00 init 2 ? S< 0:00 migration/0 3 ? SN 0:00 ksoftirqd/0 4 ? S< 0:00 watchdog/0<略>1818 ? S 0:00 postmaster 1840 ? Ss 0:00 atd 1847 ? S 0:00 postmaster 1848 ? S 0:00 postmaster 1849 ? S 0:00 postmaster1979 ? Ss 0:00 httpd 1980 ? S 0:00 rotatelogs 1981 ? S 0:00 rotatelogs 1982 ? S 0:00 rotatelogs 1983 ? S 0:00 rotatelogs 1984 ? S 0:00 rotatelogs root@Lion:~# killall postmaster ←Quit postmaster root@Lion:~# ps -acx ←Displays the process PID TTY STAT TIME COMMAND 1 ? Ss 0:00 init 2 ? S< 0:00 migration/0 3 ? SN 0:00 ksoftirqd/0 4 ? S< 0:00 watchdog/0<略> ←The postmaster is finished。 1979 ? Ss 0:00 httpd 1980 ? S 0:00 rotatelogs 1981 ? S 0:00 rotatelogs 1982 ? S 0:00 rotatelogs 1983 ? S 0:00 rotatelogs 1984 ? S 0:00 rotatelogs |