chmod - change file mode (permissions)

chmod mode file... 
chmod [augo][+-=][rwx]	file...

Description

The mode of each named file is changed according to mode, which may be an integer number in octal format or a symbolic change to the existing mode.

A mode can be numerically constructed from the INCLUSIVE OR of the following VALUES:

0400 read by owner

0200 write by owner

0100 execute (search in directory) by owner

0070 read, write, execute (search) by group

0007 read, write, execute (search) by others

0400	read by owner
0200	write by owner
0100	execute (search in directory) by owner
0070	read, write, execute (search) by group
0007	read, write, execute (search) by others

A symbolic mode has the form:

	[who] op permission

The who part is a combination of the letters u (for user's permissions), g (group) and o (other). The letter a stands for ugo. If who is omitted, the default is a.

The op field can be:

+ to add permission to the file's mode

- to take away permission

= to assign permission absolutely
(all other bits will be reset)

+	to add permission to the file's mode
-	to take away permission
=	to assign permission absolutely (all other bits will be reset)

The permission field is any combination of the letters r (read), w (write), and x (execute).

Caveats

The #r format for expressing integer values is not recognized.

Notes

See stat, fstat, fwstat, wstat - get and put file status in Chapter 8 for interpretation of permissions on Windows-hosted systems.

chmod - change file mode (permissions)

Description

Caveats

Notes

See Also