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Chmod 000

Owner has no permissions. Group has no permissions. Others have no permissions.

Numeric Notation

000

Symbolic Notation

---------

Command

chmod 000 file

Permission Breakdown

Detailed view of permissions for each user category

Owner

✗ Read✗ Write✗ Execute

Group

✗ Read✗ Write✗ Execute

Others

✗ Read✗ Write✗ Execute

For Files

chmod 000 filename.txt

Changes permissions of a single file

chmod 000 *.txt

Changes permissions of all .txt files

After applying chmod 000, files will display as:

--------- filename.txt

For Directories

chmod 000 dirname

Changes permissions of a directory

chmod -R 000 dirname

Recursively changes all files and subdirectories

After applying chmod 000, directories will display as:

d--------- dirname

Common Use Cases for Chmod 000

Restricted Access

Files with restricted access, not available to public users.

General Purpose

This permission set is useful when you need access.

General Purpose

This permission set is useful when you need access.

Related Chmod Codes

Explore similar permission configurations

Try the Interactive Calculator

Experiment with different permission combinations

Understanding Chmod 000

The chmod 000 command sets specific file permissions in Linux and Unix systems. This permission configuration owner has no permissions. group has no permissions. others have no permissions.

In the numeric notation 000, each digit represents the permission level for different user categories. The symbolic representation --------- provides a visual way to understand these permissions, where 'r' means read, 'w' means write, 'x' means execute, and '-' means no permission.

When you execute chmod 000 filename, you're modifying the file's access control list to match this specific permission pattern. This is essential for maintaining proper security and access control in multi-user environments.