Kill process method in CentOS

One, get the process PID and then kill-s-9pid to kill process 1, ps-ef [root @ justinconf] # ps-efUIDPIDPPIDCSTIMETTYTIMECMDroot10014: 09? 00:00:02/sbin/initroot2

1. get the process PID and kill-s-9 pid to kill the process.

1. ps-ef

[root@justin conf]# ps -efUID        PID  PPID  C STIME TTY          TIME CMDroot         1     0  0 14:09 ?        00:00:02 /sbin/initroot         2     0  0 14:09 ?        00:00:00 [kthreadd]root         3     2  0 14:09 ?        00:00:00 [migration/0]root         4     2  0 14:09 ?        00:00:00 [ksoftirqd/0]root         5     2  0 14:09 ?        00:00:00 [migration/0]

2. ps-aux

[root@justin conf]# ps -auxWarning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQUSER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMANDroot         1  0.4  0.1   2872  1424 ?        Ss   14:09   0:02 /sbin/initroot         2  0.0  0.0      0     0 ?        S    14:09   0:00 [kthreadd]root         3  0.0  0.0      0     0 ?        S    14:09   0:00 [migration/0]root         4  0.0  0.0      0     0 ?        S    14:09   0:00 [ksoftirqd/0]

Note: You can use pipelines to precisely search for data.

[root@justin conf]# ps -aux|grep httpdWarning: bad syntax, perhaps a bogus '-'? See /usr/share/doc/procps-3.2.8/FAQroot      1973  0.0  0.3  11648  3308 ?        Ss   14:13   0:00 /usr/sbin/httpdapache    1976  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1977  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1978  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1979  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1980  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1981  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1982  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdapache    1983  0.0  0.2  11648  2128 ?        S    14:13   0:00 /usr/sbin/httpdroot      2007  0.0  0.0   4340   744 pts/0S+   14:20   0:00 grephttpd

3. pgrep

Pgrep p indicates that this command is specially used for process query grep.

[root@justin conf]# pgrep httpd197319761977197819791980198119821983

4. pidof

Pid of xx, literally translated as The PID of xx, is slightly less than pgrep, pidof must give the full name of the process

[root@justin conf]# pidof httpd1983 1982 1981 1980 1979 1978 1977 1976 1973[root@justin conf]#

II. ps-ef | grep httpd | grep-v grep | cut-c 9-15 | xargs kill-s 9

Note:

The output of "grep httpd" is that all processes that contain the keyword "httpd.

"Grep-v grep" is a process that removes the keyword "grep" from the listed processes.

"Cut-c 9-15" refers to intercepting 9th to 15th characters of the input line, which is exactly the process id PID.

The xargs command in "xargs kill-s 9" is used to take the output result (PID) of the preceding command as the parameter of "kill-s 9" and execute this command. "Kill-s 9" will forcibly kill the specified process

3. pgrep httpd | xargs kill-s 9

The above command is too long to be used, and most will use this command

IV. kill-s 9'Pgrep httpd'

5. killall-9 httpd

Complete program names must be followed by killall. Otherwise, a message is reported.

This article is from the "process is to achieve results" blog, please be sure to keep this source http://justinpeng.blog.51cto.com/7662323/1313927c