Getting Help in Linux

When using Linux, you’ll often come across commands that you don’t fully understand or have never seen before. Instead of guessing, you can use built-in tools to find help. Here’s how:

1. Using the man Command (Manual Pages)

Every Linux command has a manual (man page) that explains what it does and how to use it.

How to use it:

man <command>

Example: To see the manual for the ls command (which lists files and folders):

man ls

The manual will show details about the command, including available options and examples.

2. Using the —help Option

Most Linux commands have a —help option, which gives a quick summary of how to use them.

How to use it:

<command> --help

Example:

ls --help

This will display a short description of the ls command and a list of its options.

3. Using the -h Option (Short Help)

Some commands, like curl, use -h instead of —help for short help.

How to use it:

<command> -h

Example:

curl -h

This will show a quick summary of available options for curl.

4. Using the apropos Command

If you don’t remember the exact command but know a keyword related to it, you can use apropos to search for commands.

How to use it:

apropos <keyword>

Example:

apropos sudo

This will list all commands related to sudo along with short descriptions.

5. Using Online Tools

If a command is too complex, you can use online tools like explainshell.com to break it down.

How to use it:

• Go to https://explainshell.com/
• Copy and paste a command into the search bar.
• It will explain each part of the command in simple terms.