chmod mode file...

Change file mode, using absolute or symbolic mode flags.

Absolute mode -
4000	set user ID
2000	set group ID
1000	sticky bit
0400	owner read
0200		  write
0100		  execute/search dir
0040	group read
0020		  write
0010		  execute/search
0004	others read
0002		   write
0001		   execute/search

Symbolic mode -
	[who] op perm [op perm]...
who	= u/g/o/a (default = (a)ll)
op	= +/- (add or remove) or = to reset all other bits
perm = r (read) / w (write) / x (exec/search) / s (set owner/group)
		/ t (set sticky)
	   u/g/o = take perm from current mode.

Notes -
Only su can set sticky.
Multiple modes can be given, seperated by commas.
