Linux Command Guide

Search and explore various Linux commands.

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visudo

visudo: Safely Edit sudoers File

`visudo` is a dedicated command for safely editing the `sudoers` file. This file defines which users and groups can use the `sudo` command on the system, and which commands they are allowed to execute. `visudo` provides features like file locking during editing and syntax error checking, preventing system access issues (sudo lockout) caused by corruption of the `sudoers` file.

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watch

watch: Monitor command output periodically

The watch command executes a specified command periodically and displays its output in full screen. It is useful for real-time monitoring of system logs, process status, file changes, and more.

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write

write: Send a message to another user

The write command is a utility that allows you to send a direct message to another user currently logged into the system. The text you input is displayed in real-time on the recipient's terminal, making it useful for simple one-on-one communication.

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