From 5b57d28ffb6e1ef86b50f7d05d977826eae89bfe Mon Sep 17 00:00:00 2001 From: Kiyoshi Aman Date: Fri, 1 Feb 2019 22:55:37 +0000 Subject: initial population --- bin/chmod/chmod.1 | 313 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 313 insertions(+) create mode 100644 bin/chmod/chmod.1 (limited to 'bin/chmod/chmod.1') diff --git a/bin/chmod/chmod.1 b/bin/chmod/chmod.1 new file mode 100644 index 0000000..c9c1150 --- /dev/null +++ b/bin/chmod/chmod.1 @@ -0,0 +1,313 @@ +.\" $NetBSD: chmod.1,v 1.28 2017/07/04 06:47:27 wiz Exp $ +.\" +.\" Copyright (c) 1989, 1990, 1993, 1994 +.\" The Regents of the University of California. All rights reserved. +.\" +.\" This code is derived from software contributed to Berkeley by +.\" the Institute of Electrical and Electronics Engineers, Inc. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. Neither the name of the University nor the names of its contributors +.\" may be used to endorse or promote products derived from this software +.\" without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND +.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE +.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE +.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE +.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT +.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY +.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF +.\" SUCH DAMAGE. +.\" +.\" @(#)chmod.1 8.4 (Berkeley) 3/31/94 +.\" +.Dd August 11, 2016 +.Dt CHMOD 1 +.Os +.Sh NAME +.Nm chmod +.Nd change file modes +.Sh SYNOPSIS +.Nm +.Oo +.Fl R +.Op Fl H | Fl L | Fl P +.Oc +.Op Fl fh +.Ar mode +.Ar +.Nm +.Oo +.Fl R +.Op Fl H | Fl L | Fl P +.Oc +.Op Fl fh +.Fl Fl reference=rfile +.Ar +.Sh DESCRIPTION +The +.Nm +utility modifies the file mode bits of the listed files +as specified by the +.Ar mode +operand, or +copied from a reference +.Ar rfile , +as specified with the +.Fl Fl reference +argument. +.Pp +The options are as follows: +.Bl -tag -width Ds +.It Fl H +If the +.Fl R +option is specified, symbolic links on the command line are followed. +(Symbolic links encountered in the tree traversal are not followed.) +.It Fl L +If the +.Fl R +option is specified, all symbolic links are followed. +.It Fl P +If the +.Fl R +option is specified, no symbolic links are followed. +.It Fl R +Change the modes of the file hierarchies rooted in the files +instead of just the files themselves. +.It Fl f +Do not display a diagnostic message or modify the exit status if +.Nm +fails to change the mode of a file. +.It Fl h +If +.Ar file +is symbolic link, the mode of the link is changed. +.El +.Pp +The +.Fl H , +.Fl L +and +.Fl P +options are ignored unless the +.Fl R +option is specified. +In addition, these options override each other and the +command's actions are determined by the last one specified. +The default is as if the +.Fl P +option had been specified. +.Pp +Only the owner of a file or the super-user is permitted to change +the mode of a file. +.Sh EXIT STATUS +.Ex -std chmod +.Sh MODES +Modes may be absolute or symbolic. +An absolute mode is an octal number constructed by +.Em or Ap ing +the following values: +.Pp +.Bl -tag -width 6n -compact -offset indent +.It Li 4000 +set-user-ID-on-execution +.It Li 2000 +set-group-ID-on-execution +.It Li 1000 +sticky bit, see +.Xr chmod 2 +.It Li 0400 +read by owner +.It Li 0200 +write by owner +.It Li 0100 +execute (or search for directories) by owner +.It Li 0070 +read, write, execute/search by group +.It Li 0007 +read, write, execute/search by others +.El +.Pp +The read, write, and execute/search values for group and others +are encoded as described for owner. +.Pp +The symbolic mode is described by the following grammar: +.Bd -literal -offset indent +mode ::= clause [, clause ...] +clause ::= [who ...] [action ...] last_action +action ::= op [perm ...] +last_action ::= op [perm ...] +who ::= a | u | g | o +op ::= + | \- | = +perm ::= r | s | t | w | x | X | u | g | o +.Ed +.Pp +The +.Ar who +symbols ``u'', ``g'', and ``o'' specify the user, group, and other parts +of the mode bits, respectively. +The +.Ar who +symbol ``a'' is equivalent to ``ugo''. +.Pp +The +.Ar perm +symbols represent the portions of the mode bits as follows: +.Pp +.Bl -tag -width Ds -compact -offset indent +.It r +The read bits. +.It s +The set-user-ID-on-execution and set-group-ID-on-execution bits. +.It t +The sticky bit. +.It w +The write bits. +.It x +The execute/search bits. +.It X +The execute/search bits if the file is a directory or any of the +execute/search bits are set in the original (unmodified) mode. +Operations with the +.Ar perm +symbol ``X'' are only meaningful in conjunction with the +.Ar op +symbol ``+'', and are ignored in all other cases. +.It u +The user permission bits in the mode of the original file. +.It g +The group permission bits in the mode of the original file. +.It o +The other permission bits in the mode of the original file. +.El +.Pp +The +.Ar op +symbols represent the operation performed, as follows: +.Bl -tag -width 4n +.It + +If no value is supplied for +.Ar perm , +the ``+'' operation has no effect. +If no value is supplied for +.Ar who , +each permission bit specified in +.Ar perm , +for which the corresponding bit in the file mode creation mask +is clear, is set. +Otherwise, the mode bits represented by the specified +.Ar who +and +.Ar perm +values are set. +.It \&\- +If no value is supplied for +.Ar perm , +the ``\-'' operation has no effect. +If no value is supplied for +.Ar who , +each permission bit specified in +.Ar perm , +for which the corresponding bit in the file mode creation mask +is clear, is cleared. +Otherwise, the mode bits represented by the specified +.Ar who +and +.Ar perm +values are cleared. +.It = +The mode bits specified by the +.Ar who +value are cleared, or, if no who value is specified, the owner, group +and other mode bits are cleared. +Then, if no value is supplied for +.Ar who , +each permission bit specified in +.Ar perm , +for which the corresponding bit in the file mode creation mask +is clear, is set. +Otherwise, the mode bits represented by the specified +.Ar who +and +.Ar perm +values are set. +.El +.Pp +Each +.Ar clause +specifies one or more operations to be performed on the mode +bits, and each operation is applied to the mode bits in the +order specified. +.Pp +Operations upon the other permissions only (specified by the symbol +``o'' by itself), in combination with the +.Ar perm +symbols ``s'' or ``t'', are ignored. +.Sh EXAMPLES +.Bl -tag -width "u=rwx,go=u-w" -compact +.It Li 644 +make a file readable by anyone and writable by the owner only. +.Pp +.It Li go-w +deny write permission to group and others. +.Pp +.It Li =rw,+X +set the read and write permissions to the usual defaults, but +retain any execute permissions that are currently set. +.Pp +.It Li +X +make a directory or file searchable/executable by everyone if it is +already searchable/executable by anyone. +.Pp +.It Li 755 +.It Li u=rwx,go=rx +.It Li u=rwx,go=u-w +make a file readable/executable by everyone and writable by the owner only. +.Pp +.It Li go= +clear all mode bits for group and others. +.Pp +.It Li g=u-w +set the group bits equal to the user bits, but clear the group write bit. +.El +.Sh SEE ALSO +.Xr chflags 1 , +.Xr install 1 , +.Xr chmod 2 , +.Xr stat 2 , +.Xr umask 2 , +.Xr fts 3 , +.Xr setmode 3 , +.Xr symlink 7 , +.Xr chown 8 +.Sh STANDARDS +The +.Nm +utility is expected to be +.St -p1003.2-92 +compatible with the exception of the +.Ar perm +symbol +.Dq t +which is not included in that standard. +.Sh HISTORY +A +.Nm +utility appeared in +.At v1 . +.Sh BUGS +There's no +.Ar perm +option for the naughty bits. -- cgit v1.2.3-70-g09d2