Linux Terminal Command: htop

The htop command is an essential tool in Process & Job Control. In this tutorial, we will explore what htop does, look at everyday examples, and cover advanced options to supercharge your command-line workflow.

Concept & Explanation

htop is a modern replacement for top. It features colored bars for CPU cores, memory metrics, scrollable lists, process search, and mouse support.

Common Options & Syntax

htop [options] [arguments]

Here are the most common flags used with htop:

Simple Usage: Basic default commands.
Detailed View: Shows diagnostic information.
Advanced Actions: Can chain parameters for scripting.

1. Interactive Example (Simple)

Here is how most people run the command:

# Example
htop

What it does: Launches the interactive process monitor.

2. Power-User Example (Advanced)

For scripting and advanced diagnostics, use this configuration:

# Advanced
htop -u www-data

What it does: Launches htop showing only the processes belonging to the ‘www-data’ user.

⚙️ Warning & Common Pitfalls

[!WARNING] htop may not be installed by default on minimal Linux servers. You must install it using your package manager (e.g. sudo apt install htop).

Here are some related posts on cli_tty1 you might want to check out:

sudo : Execute a command as another user (typically superuser).
top : Display Linux processes in real time.