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Annotation of cci/usr/src/man/man1/chmod.1, revision 1.1.1.1

1.1       root        1: .TH CHMOD 1 "18 January 1983"
                      2: .SH NAME
                      3: chmod \- change mode
                      4: .SH SYNOPSIS
                      5: \fBchmod\fP mode file ...
                      6: .SH DESCRIPTION
                      7: The mode of each named file is changed according to \fImode\fP,
                      8: which may be absolute or symbolic.  An absolute \fImode\fP
                      9: is an octal number constructed from the OR of the following modes:
                     10: .TP 10
                     11: 4000
                     12: set user ID on execution
                     13: .br
                     14: .ns
                     15: .TP 10
                     16: 2000
                     17: set group ID on execution
                     18: .br
                     19: .ns
                     20: .TP 10
                     21: 1000
                     22: sticky bit, see
                     23: .IR  chmod (2)
                     24: .br
                     25: .ns
                     26: .TP 10
                     27: 0400
                     28: read by owner
                     29: .br
                     30: .ns
                     31: .TP 10
                     32: 0200
                     33: write by owner
                     34: .br
                     35: .ns
                     36: .TP 10
                     37: 0100
                     38: execute (search in directory) by owner
                     39: .br
                     40: .ns
                     41: .TP 10
                     42: 0070
                     43: read, write, execute (search) by group
                     44: .br
                     45: .ns
                     46: .TP 10
                     47: 0007
                     48: read, write, execute (search) by others
                     49: .LP
                     50: A symbolic \fImode\fP has the form:
                     51: .IP
                     52: .RI [ who ]
                     53: \fIop permission\fP
                     54: .RI [ "op permission" "] ..."
                     55: .LP
                     56: The \fIwho\fP part is a combination of the letters \fBu\fP
                     57: (for user's permissions), \fBg\fP (group) and \fBo\fP (other).
                     58: The letter \fBa\fP stands for all, or \fBugo.\fP
                     59: If \fIwho\fP is omitted, the default is \fIa\fP
                     60: but the setting of the file creation mask (see umask(2)) is taken into account.
                     61: .LP
                     62: \fIOp\fP can be \fB+\fP to add \fIpermission\fP to the file's mode,
                     63: \fB\-\fP to take away \fIpermission\fP and \fB=\fP to assign
                     64: \fIpermission\fP absolutely (all other bits will be reset).
                     65: .LP
                     66: \fIPermission\fP is any combination of the letters \fBr\fP (read),
                     67: \fBw\fP (write), \fBx\fP (execute), \fBs\fP (set owner or group id)
                     68: and \fBt\fP (save text \- sticky).  Letters
                     69: .BR u,
                     70: \fBg\fP or \fBo\fP indicate that \fIpermission\fP
                     71: is to be taken from the current mode.  Omitting \fIpermission\fP
                     72: is only useful with \fB=\fP to take away all permissions.
                     73: .SH EXAMPLES
                     74: .LP
                     75: The first example denies write permission to others,
                     76: the second makes a file executable:
                     77: .IP
                     78: chmod o\-w file
                     79: .br
                     80: chmod +x file
                     81: .LP
                     82: Multiple symbolic modes separated by commas may be given.
                     83: Operations are performed in the order specified.  The letter
                     84: \fBs\fP is only useful with \fBu\fP or \fBg.\fP
                     85: .LP
                     86: Only the owner of a file (or the super-user) may change its mode.
                     87: .SH "SEE ALSO"
                     88: ls(1), chmod(2), stat(2), umask(2), chown(8)

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