- Add new -vv option. If the -v flag is specified more than once,
[dragonfly.git] / usr.sbin / chown / chown.8
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32.\" @(#)chown.8 8.3 (Berkeley) 3/31/94
33.\" $FreeBSD: src/usr.sbin/chown/chown.8,v 1.10.2.7 2003/03/12 22:08:13 trhodes Exp $
5362a783 34.\" $DragonFly: src/usr.sbin/chown/chown.8,v 1.3 2004/11/25 19:45:30 liamfoy Exp $
984263bc 35.\"
5362a783 36.Dd November 24, 2004
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37.Dt CHOWN 8
38.Os
39.Sh NAME
40.Nm chown
41.Nd change file owner and group
42.Sh SYNOPSIS
43.Nm
44.Op Fl fhv
45.Oo
46.Fl R
47.Op Fl H | Fl L | Fl P
48.Oc
49.Ar owner Ns Op : Ns Ar group
50.Ar
51.Nm
52.Op Fl fhv
53.Oo
54.Fl R
55.Op Fl H | Fl L | Fl P
56.Oc
57.No : Ns Ar group
58.Ar
59.Sh DESCRIPTION
60The
61.Nm
62utility changes the user ID and/or the group ID of the specified files.
63Symbolic links named by arguments are silently left unchanged unless
64.Fl h
65is used.
66.Pp
67The options are as follows:
68.Bl -tag -width Ds
69.It Fl H
70If the
71.Fl R
72option is specified, symbolic links on the command line are followed.
73(Symbolic links encountered in the tree traversal are not followed.)
74.It Fl L
75If the
76.Fl R
77option is specified, all symbolic links are followed.
78.It Fl P
79If the
80.Fl R
81option is specified, no symbolic links are followed.
82This is the default.
83.It Fl R
84Change the user ID and/or the group ID of the specified directory trees
85(recursively, including their contents) and files.
86Beware of unintentionally matching the
87.Dq Pa ".."
88hard link to the parent directory when using wildcards like
89.Dq Li ".*" .
90.It Fl f
91Don't report any failure to change file owner or group, nor modify
92the exit status to reflect such failures.
93.It Fl h
94If the file is a symbolic link, change the user ID and/or the
95group ID of the link itself.
96.It Fl v
97Cause
98.Nm
99to be verbose, showing files as the owner is modified.
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LF
100If the
101.Fl v
102flag is specified more than once,
103.Nm
104will print the filename, followed by the old and new numeric user/group ID.
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105.El
106.Pp
107The
108.Fl H ,
109.Fl L
110and
111.Fl P
112options are ignored unless the
113.Fl R
114option is specified.
115In addition, these options override each other and the
116command's actions are determined by the last one specified.
117.Pp
118The
119.Ar owner
120and
121.Ar group
122operands are both optional, however, one must be specified.
123If the
124.Ar group
125operand is specified, it must be preceded by a colon (``:'') character.
126.Pp
127The
128.Ar owner
129may be either a numeric user ID or a user name.
130If a user name is also a numeric user ID, the operand is used as a
131user name.
132The
133.Ar group
134may be either a numeric group ID or a group name.
135If a group name is also a numeric group ID, the operand is used as a
136group name.
137.Pp
138The ownership of a file may only be altered by a super-user for
139obvious security reasons.
140.Sh DIAGNOSTICS
141.Ex -std
142.Sh COMPATIBILITY
143Previous versions of the
144.Nm
145utility used the dot (``.'') character to distinguish the group name.
146This has been changed to be a colon (``:'') character so that user and
147group names may contain the dot character.
148.Pp
149On previous versions of this system, symbolic links did not have
150owners.
151.Pp
152The
153.Fl v
154option is non-standard and its use in scripts is not recommended.
155.Sh SEE ALSO
156.Xr chgrp 1 ,
157.Xr find 1 ,
158.Xr chown 2 ,
159.Xr fts 3 ,
160.Xr symlink 7
161.Sh STANDARDS
162The
163.Nm
164utility is expected to be
165.St -p1003.2
166compliant.
167.Sh HISTORY
168A
169.Nm
170utility appeared in
171.At v1 .