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This article mainly introduces "the usage of Linux basic command killall". In daily operation, I believe many people have doubts about the usage of Linux basic command killall. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful for you to answer the doubts about "the usage of Linux basic command killall"! Next, please follow the editor to study!

Killall

Killall can kill processes by name, and it sends messages to all processes with specified names. If no signal name is specified, SIGTERM is sent. The signal can be specified by a name (for example,-HUP or-SIGHUP) or a number (for example,-1) or the option-s. If the command name is not a regular expression (option-r) and contains a slash (/), the process that executes that particular file is selected, regardless of its name. If at least one process is killed for each listed command, or if no command is listed, and at least one process meets the-u and-Z search criteria, KILLALL returns a zero return code. Otherwise, KILLALL returns non-zero. The KILLALL process will never kill itself (but it may kill other KILLALL processes).

The scope of this command: RedHat, RHEL, Ubuntu, CentOS, SUSE, openSUSE, Fedora.

1. Grammar

Killall [options] name

2. List of options

Option

Description

-e |-- exact

The process needs to match the name exactly

-I |-- ignore-case

Ignore case

-g |-- process-group

End process group

-I |-- interactive

Ask before the end

-l |-- list

List all signal names

-Q |-- quite

When the process does not end, no information is output

-r |-- regexp

Interprets the process name pattern as an extended regular expression.

-s |-- signal

Send a specified signal

-u |-- user

End the process for the specified user

-v |-- verbose

Show detailed execution process

-w |-- wait

Waiting for all the processes to end.

-V |-- version

Display version information

-- help

Display help information

3. Examples

End all processes

[root@localhost ~] # ps / / View process, there are 3 wc processes

PID TTY TIME CMD

8266 pts/0 00:00:00 bash

9781 pts/0 00:00:00 wc

9784 pts/0 00:00:00 wc

9785 pts/0 00:00:00 wc

9786 pts/0 00:00:00 ps

[root@localhost ~] # killall-9 wc / / end all wc processes

[root@localhost ~] # ps / / View process, wc are all killed

PID TTY TIME CMD

8266 pts/0 00:00:00 bash

9788 pts/0 00:00:00 ps

[1] killed nice-n 19 wc

[2]-killed nice-n 19 wc

[3] + killed nice-n 19 wc

At this point, the study of "the usage of the Linux basic command killall" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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