chattr
chattr is a Linux command in the Permissions category, rated intermediate difficulty. Changes file attributes on Linux filesystems (immutable, append-only). The syntax is chattr [options] file. It returns file attribute changed. A close relative is chmod, which changes file permissions (read, write, execute) for owner/group/others. A close relative is chown, which changes file owner and/or group ownership. A close relative is chgrp, which changes group ownership of files and directories. More about this category: Linux permission commands — chmod, chown, chgrp, umask, and more. Manage file permissions and ownership. Related Permissions commands: chmod, chown, chgrp, umask, sudo, su, getfacl, setfacl. This page is part of the free Linux Reference documentation covering 304+ commands, each with syntax, options, practical examples, and a difficulty rating. Find chattr and the other essentials on the Linux cheat sheet, or return to the Linux Reference homepage.