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28 .\" from: @(#)chown.8 8.3 (Berkeley) 3/31/94
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36 .Nd change file owner and group
41 .Op Fl H | Fl L | Fl P
44 .Ar owner Ns Op Ar :group
49 .Op Fl H | Fl L | Fl P
56 sets the user ID and/or the group ID of the specified files.
58 The options are as follows:
63 option is specified, symbolic links on the command line are followed.
64 (Symbolic links encountered in the tree traversal are not followed.)
68 option is specified, all symbolic links are followed.
72 option is specified, no symbolic links are followed.
74 Change the user ID and/or the group ID for the file hierarchies rooted
75 in the files instead of just the files themselves.
77 Don't report any failure to change file owner or group, nor modify
78 the exit status to reflect such failures.
82 is a symbolic link, the owner and/or group of the link is changed.
86 to be verbose, showing files as they are processed.
94 options are ignored unless the
97 In addition, these options override each other and the
98 command's actions are determined by the last one specified.
102 option cannot be used together with the
110 operands are both optional, however, one must be specified.
113 operand is specified, it must be preceded by a colon (``:'') character.
117 may be either a user name or a numeric user ID.
120 may be either a group name or a numeric group ID.
121 Since it is valid to have a user or group name that is numeric (and
122 doesn't have the numeric ID that matches its name) the name lookup
123 is always done first.
124 Preceding an ID with a ``#'' character will force it to be taken
127 The ownership of a file may only be altered by a super-user for
128 obvious security reasons.
130 Unless invoked by the super-user,
132 clears the set-user-id and set-group-id bits on a file to prevent
133 accidental or mischievous creation of set-user-id and set-group-id
138 utility exits 0 on success, and \*[Gt]0 if an error occurs.
140 Previous versions of the
142 utility used the dot (``.'') character to distinguish the group name.
143 This has been changed to be a colon (``:'') character so that user and
144 group names may contain the dot character.
156 command is expected to be POSIX 1003.2 compliant.
160 option and the use of ``#'' to force a numeric lookup