Home/chmod 2121

Chmod 2121

Owner can execute. Group can write. Others can execute. SETGID bit is set.

Numeric Notation

2121

Symbolic Notation

--x-wS--x

Command

chmod 2121 file

Permission Breakdown

Detailed view of permissions for each user category

Owner

✗ Read✗ Write✓ Execute

Group

✗ Read✓ Write✗ Execute

Others

✗ Read✗ Write✓ Execute

Special Permissions

✓ SETGID bit is set

For Files

chmod 2121 filename.txt

Changes permissions of a single file

chmod 2121 *.txt

Changes permissions of all .txt files

After applying chmod 2121, files will display as:

--x-wS--x filename.txt

For Directories

chmod 2121 dirname

Changes permissions of a directory

chmod -R 2121 dirname

Recursively changes all files and subdirectories

After applying chmod 2121, directories will display as:

d--x-wS--x dirname

Common Use Cases for Chmod 2121

General Purpose

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

General Purpose

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

General Purpose

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

Related Chmod Codes

Explore similar permission configurations

Try the Interactive Calculator

Experiment with different permission combinations

Understanding Chmod 2121

The chmod 2121 command sets specific file permissions in Linux and Unix systems. This permission configuration owner can execute. group can write. others can execute. setgid bit is set.

In the numeric notation 2121, each digit represents the permission level for different user categories. The symbolic representation --x-wS--x 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 2121 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.