ref: 36876b95224938d1388ca04d5dc5dc40481dcdd3
dir: /sys/man/1/chmod/
.TH CHMOD 1 .SH NAME chmod \- change mode .SH SYNOPSIS .B chmod .I mode file ... .SH DESCRIPTION The mode of each named file is changed according to .IR mode, which may be an octal number or a symbolic change to the existing mode. A .I mode is an octal number constructed from the OR of the following modes. .TF 0000 .TP 0400 read by owner .TP 0200 write by owner .TP 0100 execute (search in directory) by owner .TP 0070 read, write, execute (search) by group .TP 0007 read, write, execute (search) by others .PD .PP A symbolic .I mode has the form: .IP .RI [who] .I op permission .PP The .I who part is a combination of the letters .B u (for user's permissions), .B g (group) and .B o (other). The letter .B a stands for .BR ugo . If .I who is omitted, the default is .BR a . .PP .I Op can be .B + to add .I permission to the file's mode, .B - to take away .IR permission , and .B = to assign .I permission absolutely (all other bits will be reset). .PP .I Permission is any combination of the letters .B r (read), .B w (write), .B x (execute), .B a (append only), .B l (exclusive access), and .B t (temporary file). .PP Only the owner of a file or the group leader of its group may change the file's mode. .SH SOURCE .B /sys/src/cmd/chmod.c .SH "SEE ALSO" .IR ls (1), .IR stat (2), .IR stat (5)