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This article shows you how to end the process on the cloud server, the content is concise and easy to understand, it will definitely brighten your eyes. I hope you can get something through the detailed introduction of this article.

How do I end the process on the cloud server? In a server system, kill is usually a command used to kill a process. The execution principle of the kill command is that the kill command sends a signal (mostly a termination signal) and the PID of the target process to the operating system kernel, and then the system kernel operates on the specified process according to the type of signal received.

The basic format of the kill command is as follows:

[root@localhost ~] # kill [signal] PID

The kill command determines the process according to PID, so the kill command can only recognize the PID, not the process name. The CVM Linux defines dozens of different types of signals. Readers can use the kill-l command to view all the signals and their numbers.

Standard kill command

[root@localhost ~] # service httpd start# starts the apache service installed by default in the RPM package [root@localhost ~] # pstree-p, grep httpd | grep-v "grep" # to view the process tree and PID of httpd. The grep command "httpd" will also generate processes containing the "httpd" keyword, so use "- v" to reverse select the process containing the "grep" keyword. Here, use the pstree command to query the process. Of course, you can also use the ps and top commands |-httpd (2246)-+-httpd (2247) | |-httpd (2248) | |-httpd (2249) |-httpd (2250) |-httpd (2251) [root@localhost ~] # kill 224killing the httpd process where PID is 2248. The default signal is 15, which stops normally # if the default signal 15 cannot kill the process, you can try the-9 signal to forcibly kill the process [root@localhost ~] # pstree-p | grep httpd | grep-v "grep" |-httpd (2246 >-+-httpd (2247) | |-httpd (2249) | |-httpd (2250) | |-httpd (2251) # PID is 2248 httpd process has disappeared.

However, the kill command only "sends" a signal, so the system will perform the operation specified by the kill command only if the signal is successfully "captured" by the program; conversely, if the signal is "blocked" or "ignored", the kill command will fail.

The above content is how to end the process on the cloud server. Have you learned the knowledge or skills? If you want to learn more skills or enrich your knowledge reserve, you are welcome to follow the industry information channel.

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