chown/chgrp.1

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  35 .\"     @(#)chgrp.1     8.3 (Berkeley) 3/31/94
  36 .\" $FreeBSD: src/usr.sbin/chown/chgrp.1,v 1.13 2001/08/15 09:09:46 ru Exp $
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  38 .Dd March 31, 1994
  39 .Dt CHGRP 1
  40 .Os
  41 .Sh NAME
  42 .Nm chgrp
  43 .Nd change group
  44 .Sh SYNOPSIS
  45 .Nm chgrp
  46 .Op Fl fhnv
  47 .Oo
  48 .Fl R
  49 .Op Fl H | Fl L | Fl P
  50 .Oc
  51 .Ar group
  52 .Ar
  53 .Sh DESCRIPTION
  54 The
  55 .Nm chgrp
  56 utility sets the group ID of the file named by each
  57 .Ar file
  58 operand to the
  59 .Ar group
  60 ID specified by the group operand.
  61 .Pp
  62 The following options are available:
  63 .Bl -tag -width indent
  64 .It Fl f
  65 The force option ignores errors, except for usage errors and doesn't
  66 query about strange modes (unless the user does not have proper permissions).
  67 .It Fl H
  68 If the
  69 .Fl R
  70 option is specified, symbolic links on the command line are followed.
  71 (Symbolic links encountered in the tree traversal are not followed).
  72 .It Fl h
  73 If the file is a symbolic link, the group ID of the link itself is changed
  74 rather than the file that is pointed to.
  75 .It Fl L
  76 If the
  77 .Fl R
  78 option is specified, all symbolic links are followed.
  79 .It Fl P
  80 If the
  81 .Fl R
  82 option is specified, no symbolic links are followed.
  83 This is the default. Use
  84 .Fl h
  85 to change the group ID of a symbolic link.
  86 .It Fl R
  87 Change the group ID for the file hierarchies rooted
  88 in the files instead of just the files themselves.
  89 .It Fl n
  90 Interpret the group ID as numeric, avoiding the name lookup.
  91 .It Fl v
  92 Cause
  93 .Nm chgrp
  94 to be verbose, showing files as the group is modified.
  95 .El
  96 .Pp
  97 The
  98 .Fl H ,
  99 .Fl L
 100 and
 101 .Fl P
 102 options are ignored unless the
 103 .Fl R
 104 option is specified.
 105 In addition, these options override each other and the
 106 command's actions are determined by the last one specified.
 107 .Pp
 108 The
 109 .Ar group
 110 operand can be either a group name from the group database,
 111 or a numeric group ID.
 112 If a group name is also a numeric group ID, the operand is used as a
 113 group name.
 114 .Pp
 115 The user invoking
 116 .Nm chgrp
 117 must belong to the specified group and be the owner of the file,
 118 or be the super-user.
 119 .Sh DIAGNOSTICS
 120 .Ex -std
 121 .Sh COMPATIBILITY
 122 In previous versions of this system, symbolic links did not have groups.
 123 .Pp
 124 The
 125 .Fl v
 126 option is non-standard and its use in scripts is not recommended.
 127 .Sh FILES
 128 .Bl -tag -width /etc/group -compact
 129 .It Pa /etc/group
 130 group ID file
 131 .El
 132 .Sh SEE ALSO
 133 .Xr chown 2 ,
 134 .Xr fts 3 ,
 135 .Xr group 5 ,
 136 .Xr passwd 5 ,
 137 .Xr symlink 7 ,
 138 .Xr chown 8
 139 .Sh STANDARDS
 140 The
 141 .Nm chgrp
 142 utility is expected to be
 143 .St -p1003.2
 144 compatible.