CHMOD(1) CHMOD(1)
NAME
chmod - change mode
SYNOPSIS
chmod mode file ...
DESCRIPTION
The mode of each named file is changed according to mode,
which may be an octal number or a symbolic change to the
existing mode. A mode is an octal number constructed from
the OR of the following modes.
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.
Op can be + to add permission to the file's mode, - to take
away permission and = to assign permission absolutely (all
other bits will be reset).
Permission is any combination of the letters r (read), w
(write), x (execute), a (append only), and l (exclusive
access).
Only the owner of a file or the group leader of its group
may change the file's mode.
SEE ALSO
ls(1), stat(2), stat(5)
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