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Chmod 557

Owner can read, execute. Group can read, execute. Others can read, write, execute.

Numeric Notation

557

Symbolic Notation

r-xr-xrwx

Command

chmod 557 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 557 filename.txt

Changes permissions of a single file

chmod 557 *.txt

Changes permissions of all .txt files

After applying chmod 557, files will display as:

r-xr-xrwx filename.txt

For Directories

chmod 557 dirname

Changes permissions of a directory

chmod -R 557 dirname

Recursively changes all files and subdirectories

After applying chmod 557, directories will display as:

dr-xr-xrwx dirname

Common Use Cases for Chmod 557

Shared Reading

Files that need to be readable by multiple users or groups.

General Purpose

This permission set is useful when you need owner read, and execute access.

General Purpose

This permission set is useful when you need owner read, and execute access.

Related Chmod Codes

Explore similar permission configurations

Try the Interactive Calculator

Experiment with different permission combinations

Understanding Chmod 557

The chmod 557 command sets specific file permissions in Linux and Unix systems. This permission configuration owner can read, execute. group can read, execute. others can read, write, execute.

In the numeric notation 557, each digit represents the permission level for different user categories. The symbolic representation r-xr-xrwx 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 557 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.