V3/man/man2/chmod.2

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.pa 1
.he 'CHMOD (II)'3/15/72'CHMOD (II)'
.ti 0
NAME		chmod  --  change mode of file
.sp
.ti 0
SYNOPSIS	sys chmod; name; mode  / chmod = 15.
.sp
.ti 0
DESCRIPTION	The file whose name
is given as the null-terminated string pointed to by name____
has its mode changed to mode____.
Modes are constructed by or__ing together some
combination of the following:
.sp
.in +3
 01 write, non-owner
 02 read, non-owner
 04 write, owner
 10 read, owner
 20 executable
 40 set user ID on execution
.in -3
.sp
Only the owner of a file (or the super-user) may change the mode.
.sp
.ti 0
SEE ALSO	chmod(I)
.sp
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DIAGNOSTICS	Error bit
(c-bit) set if name____ cannot be found or if current user
is neither the owner of the file nor the super-user.
.sp
.ti 0
BUGS		--