File PermissionsLesson 41Free preview

Bash Modify (chmod)

This lesson is part of Bash · All levels

Summary

The chmod command changes the access permissions of a file or directory, either with a number (octave notation) or a symbol (u, g, o, a). The quickest way to add execution permissions is chmod +x skrip.sh, whereas the number 755 is commonly used for executable scripts. Only the owner or root can change the permissions.

Key points

Chmod 755 file sets permissions numerically
Chmod u+x adds execution to the owner
u = user, g = group, o = other, a = all
R is applying the change recursively

Full lesson

Code examples and quizzes

Full lessons, code examples, and quizzes are available to subscribers. 5 questions.