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This article mainly explains "how to limit the running time of Linux command program". Interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Let's let the editor take you to learn how to limit the time it takes to run a Linux command program.

Linux provides a large number of commands, each unique and in a specific situation

Use it under the circumstances. The goal of Linux is to help you work as efficiently as possible. One attribute of the Linux command is the time limit. You can set a time limit for any command you want. If the time expires, the command stops execution.

In this tutorial, you will learn two ways to use time limits in commands.

Use the `timeout` command to run the Linux command

Linux has a command-line utility called timeout that allows you to execute commands when there is a time limit.

Its syntax is as follows:

Timeout [OPTION] DURATION COMMAND [ARG]...

To use this command, you need to specify a timeout value in seconds for the command to run. For example, to have the ping command set the timeout to 5 seconds, run the following command.

Timeout 5s ping baidu.com

You do not need to specify s for the time value, the following command is the same and still works.

Timeout 5 ping baidu.com

Other suffixes include:

M stands for minutes

H stands for time

D stands for days

Sometimes, even after timeout sends the initial signal, the command may continue to run. In this case, you can use the-- kill-after option.

The following is the syntax:

-k,-- kill-after=DURATION

You need to specify a duration to let timeout know how long the kill signal will be sent. For example, the specified command will terminate after 8 seconds.

Timeout 8s tail-f / var/log/syslog

Run the Linux command using the `timelimit` program

The timelimit program runs a given command and then terminates the process with a given signal after the specified time. It first sends a warning signal, and then sends a kill signal after the timeout.

Unlike the timeout option, timelimit has more options, such as killsig, warnsig, killtime, and warntime.

Timelimit can be found in the repository of debian-based systems, and to install it, use the following command.

Sudo apt install timelimit

For arch-based systems, you can install it using aur helper programs, such as Pacaur Pacman and Packer.

Pacman-S timelimitpacaur-S timelimitpacker-S timelimit

In other Linux distributions, you can download the timelimit source code and install it manually.

After installation, run the following command and specify the time. In this case, you can use 10 seconds.

Timelimit-T10 tail-f / var/log/pacman.log

Note that if no parameters are specified, timelimit uses the default values: warntime=3600 seconds, warnsig=15, killtime=120, and killsig=9.

At this point, I believe you have a deeper understanding of "how to limit the time for Linux command programs to run". You might as well do it in practice. Here is the website, more related content can enter the relevant channels to inquire, follow us, continue to learn!

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