Linux is one of the most popular open source operating systems. There is a wide set of tools available to manage system operations, security, network configuration, etc. These tools are generally available through a command line interface (CLI) to be installed using Package manager or terminal Or you can enter directly in the middle. Below is an overview of the main types of tools available in Linux, organized by functionality.
### 1. **Administrative tools** Administrators use these tools to manage, monitor, and troubleshoot Linux systems. - **`top`**: Provides a dynamic, real-time view of system resource usage. It shows CPU, memory, and process information. - **`htop`**: Advanced version of `top` which provides a more user friendly interface. With colors and easy-to-read metrics. - **`ps`**: Show information about active processes. Often used with options such as `ps aux` for detailed information about the entire process. - **`kill`**: Send signal to end process. `kill -9 <PID>` forces process termination. - **`shutdown` / `reboot`**: Used to shutdown or reboot the system. - **`uptime`**: Shows how long the system has been up. Including the current time System uptime, number of users, and system load - **`df`**: Reports the amount of disk space used and available in the file system. - **`du`**: Estimate and report file space usage of directories and their contents. - **`Free`**: Shows memory usage. Including total memory, used, free, and swapped memory. - **`cron`**: Daemon is used to schedule and automate jobs at a specified time or interval. The `crontab` command is used to configure cron jobs. ### 2. **File and directory management tools** Linux has many tools for managing files.
