Linux permissions settings for files and directories

1, Usermod, Chown, and other modified files of the owner, belong to the group, in order to achieve the modification of file access rights. viewing with IDs

2, chattr + +-filename makes the file or directory can only be read can not be deleted, or only append.

3, chmod +/-finame permissions for a given file directly

3. chmod + + +-filename allows a file to be given specific permissions by a particular user or for a specific purpose.

4, Setfacl-m +/-filename to give the specified user specified permissions,-X cancellation. Getfacl View

5. Setfacl may not support new mounted disks, either by adding support using Mount-o ACLs or by adding to/etc/fstab,

Either specify when MKE2FS format the file system, or modify it using TUNE2FS. (Note: Mount, TUNE2FS and other settings are for the setfacl of the set effective)