Linux Permissions
Linux permission commands — chmod, chown, chgrp, umask, and more. Manage file permissions and ownership. This category documents 17 Linux permissions entries, and each page gives you the full syntax, the most useful options, a practical example you can paste into a terminal, and a difficulty rating. The entries are: chmod, chown, chgrp, umask, sudo, su, getfacl, setfacl, chattr, lsattr, id, groups, useradd, usermod, userdel, groupadd, passwd. Not sure where to start? chmod and chown are the most commonly used commands in this category. The permissions category is one of 15 categories in the Linux Reference, which covers 304+ commands and concepts in total. You can also search across every category from the search page, scan the cheat sheet, discover something new on the random command page, or read long-form tutorials on the blog.