LVM HOWTO. Linux Config. Linux Tutorial - Managing Group Access on Linux and UNIX. Group File, Directory and Device permissions: chmod Set file, directory and device permissions: File, directory and device permissions can be set to allow or deny access to members of their own group or all others. Modification of file, directory and device access is achieved with the chmod command.
The permissions can be assigned in octal notation or in the more easily recognized character format where the command form is: chmod [ugoa][+-=][rwxXst] fileORdirectoryName Note: Other file systems can be mounted by Linux which support more file and directory options. Examples: Grant read access (r) to a file to all members of your group (g): chmod g+r file-name Grant read access to a directory to all members your group: chmod g+rx directory-name Note that "execute" permission is required in order to read a directory. View file, directory and device permissions: Permissions may be viewed by issuing the command: ls -l file-name File can be written by youself and members of the group. Format: Need to fix file permissions in a user's home directory. Linux Config.