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Introduction
The chmod command is essential for managing file permissions in Linux. It allows users to define who can read, write, or execute a file.
Basic Usage of chmod
Syntax
The basic syntax of chmod is:
chmod [options] mode file
Example
To give the owner read and write permissions:
chmod u+rw filename.txt
Advanced chmod Techniques
Numeric Mode
You can also use numeric values to set permissions.
Recursive Changes
Use the -R option to change permissions for directories and their contents.
Conclusion
Mastering the chmod command is crucial for maintaining security and proper access control in Linux systems.