Linux Command Reference

Linux Command Reference: Core Features & Principles

When you encounter an unfamiliar Linux command, simply enter its name to get its functional description, syntax format, common options, and typical examples. This helps developers and DevOps engineers quickly and accurately master its usage.

Why Choose Our Linux Command Lookup Tool?

• Covers common commands and select Shell built-ins, with a continuously expanding command library.
• Search results directly display syntax, options, and examples at a glance.
• No need to memorize complex man pages—just enter the command name and get instant results.

How to Use

1. Enter the name of the Linux command you want to look up in the input box, such as ls, grep, or awk.
2. Click search or press Enter, and the system will retrieve detailed instructions for that command.
3. The output will display the command's Description, Syntax, Common Options, and Examples.
4. Example input: chmod; Example output:

   chmod - Change file permissions
   Syntax: chmod [OPTION] MODE FILE...
   Common Options: -R operate recursively
   Example: chmod 755 file.sh

Frequently Asked Questions (FAQ)

• Is the search case-sensitive? No, entering LS or ls will return the same results.
• Are Shell built-in commands supported? Yes, the reference includes both common built-in commands (like cd and echo) and external commands.

Important Notes

Only indexed commands are supported; extremely obscure commands may not be covered yet. Examples are based on general distributions, and specific options may vary slightly depending on your system version. Please follow your system's permission guidelines when using commands and exercise caution when executing high-risk operations.

Technical Notes & Tips

For commands with complex parameters (such as find or sed), we recommend reviewing the examples to understand how options are combined. If you need to view the complete official manual, you can use man command in your terminal for more detailed instructions. Common references: ls -l to list file details, grep -r "text" dir/ to recursively search for text.