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- The watch command is a built-in Linux utility used for running user-defined commands at regular intervals. It temporarily clears all the terminal content and displays the output of the attached command, along with the current system date and time. By default, the watch command updates the output every two seconds.
phoenixnap.com/kb/linux-watch-commandLinux Watch Command - Examples And How to Use It - phoenixNAP
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Aug 11, 2021 · The watch command is a built-in Linux utility used for running user-defined commands at regular intervals. It temporarily clears all the terminal content and displays the output of the attached command, along with the current system date and time. By default, the watch command updates the output every two seconds.
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- What Is The ‘Watch’ command?
- Commonly Used Options with Watch
- Conclusion
The ‘watch’ command runs another command repeatedly, showing its output and errors, and is especially useful for tracking the real-time status of commands that produce frequently changing outputs. This command keeps running until you manually stop it, usually by pressing ‘Ctrl + C’. It is a handy tool for system administrators, developers, and anyo...
1. -d, –differences:
This option highlights the differences between successive updates. The options will be going to read the optional argument which changes highlight to be permanent, allowing the user to see what has changed at least once since the first iteration. Example:
2. -n, –interval seconds:
This option will specify update interval. The command will not be going to allow quicker than the 0.1-second interval, in which the smaller values are getting converted. Example:
3. -p, –precise:
This option make watch attempt to run command every interval seconds. Example:
The ‘watch’ command is a versatile tool in Linux that allows users to execute and monitor commands periodically. Its ability to highlight differences, run commands at specified intervals, and alert on errors makes it an essential utility for system monitoring and troubleshooting. By leveraging the various options and understanding its use cases, yo...
Aug 12, 2021 · By default, the watch command will run your specified command every 2 seconds, while continuing to display the latest output in your terminal. For example, this command would run ls -l every 2 seconds. $ watch ls -l.
- watch
- Any Linux distro
Jan 12, 2022 · The watch command in Linux runs other commands on a regular interval, then displays the output in the terminal. Here’s how to use it!
Oct 25, 2023 · In UNIX/Linux, “watch” is a resourceful utility for monitoring updates in the specified command output (including errors) by refreshing the results every 2 seconds until it is interrupted using the “Ctrl+c” shortcut key.
Sep 16, 2021 · The simplest usage is: watch <command>. For example, prefixing the docker ps command with watch works like this: $ watch docker ps. The watch command, and a few creative Unix command-line tricks, can generate ad-hoc dashboards. For example, to count audit events: $ watch 'grep audit: /var/log/kern.log |wc -l'.
Oct 16, 2024 · The watch command lets you repeat another command at a specific interval. It makes monitoring real-time data like processes, resource consumption, and logs easier since you don’t need to re-run the command manually to update the output.
