On Linux operating systems, the chattr command modifies the attributes of files, and lsattr lists (displays) them.
In Linux, file attributes are flags which affect how the file is stored and accessed by the filesystem. They are metadata stored in the file's associated inode.
chattr and lsattr are part of the e2fsprogs software package, available by that name in most package managers. The e2fsprogs homepage is located at http://e2fsprogs.sourceforge.net.
Attributes are not...