CHMOD(1) CHMOD(1)
NAME
chmod - change file mode (permissions)
SYNOPSIS
chmod mode file ...
DESCRIPTION
Chmod changes the mode (permissions) of each file according
to mode, which may be an octal number or a symbolic change
to the existing mode.
A mode can be numerically formed as the OR of the following
octal values (a leading 8r is ignored):
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 being reset).
The permission field is any combination of the letters r
(read), w (write), x (execute), a (append only), l (exclu-
sive access), and t (temporary, not archived).
SOURCE
/appl/cmd/chmod.b
SEE ALSO
chgrp(1), ls(1), sys-stat(2)
BUGS
The interpretation of the modes is limited on some host
operating systems, particularly variants of Windows.
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