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chown(1)                         User Commands                        chown(1)



NAME
       chown - change file ownership

SYNOPSIS
       chown [-fhR] owner[:group] file...

       chown -R [-f] [-H | -L | -P]  owner[:group] file...

DESCRIPTION
       The  chown  utility  sets the user ID of the file named by each file to
       the user ID specified by owner, and, optionally, sets the group  ID  to
       that specified by group.

       If  chown is invoked by other than the super-user, the set-user-ID  bit
       is cleared.

       Only the owner of a file (or the super-user) can change  the  owner  of
       that file.

       The     operating     system     has     a     configuration     option
       {_POSIX_CHOWN_RESTRICTED}, to restrict  ownership  changes.  When  this
       option  is  in  effect the owner of the file is prevented from changing
       the owner ID of the file.  Only the super-user can  arbitrarily  change
       owner IDs whether or not this option is in effect. To set this configu-
       ration option, include the following line in /etc/system:

       set rstchown = 1

       To disable this option, include the following line in /etc/system:

       set rstchown = 0

       {_POSIX_CHOWN_RESTRICTED} is enabled  by  default.  See  system(4)  and
       fpathconf(2).

OPTIONS
   /usr/bin/chown and /usr/xpg4/bin/chown
       The following options are supported:

       -f       Force. Does not report errors.



       -h       If  the file is a symbolic link, this option changes the owner
                of the symbolic link. Without this option, the  owner  of  the
                file referenced by the symbolic link is changed.



       -H       If  the  file specified on the command line is a symbolic link
                referencing a file of type directory, this option changes  the
                owner of the directory referenced by the symbolic link and all
                the files in the file hierarchy below it. If a  symbolic  link
                is  encountered when traversing a file hierarchy, the owner of
                the target file is changed, but no recursion takes place.



       -L       If the file is a symbolic link, this option changes the  owner
                of the file referenced by the symbolic link. If the file spec-
                ified on the command line, or encountered during the traversal
                of  the  file hierarchy, is a symbolic link referencing a file
                of type directory, then this option changes the owner  of  the
                directory referenced by the symbolic link and all files in the
                file hierarchy below it.



       -P       If the file specified on the command line or encountered  dur-
                ing the traversal of a file hierarchy is a symbolic link, this
                option changes the owner of the  symbolic  link.  This  option
                does  not  follow  the  symbolic link to any other part of the
                file hierarchy.



       Specifying more than one of the mutually-exclusive options -H,  -L,  or
       -P is not considered an error. The last option specified determines the
       behavior of chown.

   /usr/bin/chown
       The following options are supported:

       -R       Recursive. chown descends through the directory, and any  sub-
                directories,  setting  the  specified  ownership ID as it pro-
                ceeds. When a symbolic link is encountered, the owner  of  the
                target  file  is changed, unless the -h or -P option is speci-
                fied. However, no recursion takes place, unless the -H  or  -L
                option is specified.



   /usr/xpg4/bin/chown
       The following options are supported:

       -R       Recursive.  chown descends through the directory, and any sub-
                directories, setting the specified ownership  ID  as  it  pro-
                ceeds.  When  a symbolic link is encountered, the owner of the
                target file is changed, unless the -h or -P option  is  speci-
                fied.  Unless  the  -H,  -L, or -P option is specified, the -L
                option is used as the default mode.



OPERANDS
       The following operands are supported:

       owner[:group]           A user ID and optional group ID to be  assigned
                               to file. The owner portion of this operand must
                               be a user name from  the  user  database  or  a
                               numeric  user ID. Either specifies a user ID to
                               be given to each  file  named  by  file.  If  a
                               numeric  owner exists in the user database as a
                               user name, the user ID number  associated  with
                               that  user  name  is used as the user ID. Simi-
                               larly, if the group portion of this operand  is
                               present, it must be a group name from the group
                               database or a numeric group ID.  Either  speci-
                               fies  a group ID to be given to each file. If a
                               numeric group operand exists in the group data-
                               base as a group name, the group ID number asso-
                               ciated with that group  name  is  used  as  the
                               group ID.



       file                    A  path  name  of a file whose user ID is to be
                               modified.



USAGE
       See largefile(5) for the description of  the  behavior  of  chown  when
       encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).

EXAMPLES
       Example 1: Changing Ownership of All Files in the Hierarchy

       The  following command changes ownership of all files in the hierarchy,
       including symbolic links, but not the targets of the links:

       example% chown -R -h owner[:group] file...

ENVIRONMENT VARIABLES
       See environ(5) for descriptions of the following environment  variables
       that  affect  the  execution  of chown: LANG, LC_ALL, LC_CTYPE, LC_MES-
       SAGES, and NLSPATH.

EXIT STATUS
       The following exit values are returned:

       0        The utility executed successfully and  all  requested  changes
                were made.



       >>0       An error occurred.



FILES
       /etc/passwd     System password file



ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

   /usr/bin/chown
       tab()     allbox;     cw(2.750000i)|    cw(2.750000i)    lw(2.750000i)|
       lw(2.750000i).   ATTRIBUTE  TYPEATTRIBUTE   VALUE   AvailabilitySUNWcsu
       CSIEnabled. See NOTES.  Interface StabilityStandard


   /usr/xpg4/bin/chown
       tab()     allbox;     cw(2.750000i)|    cw(2.750000i)    lw(2.750000i)|
       lw(2.750000i).   ATTRIBUTE  TYPEATTRIBUTE  VALUE   AvailabilitySUNWxcu4
       CSIEnabled. See NOTES.  Interface StabilityStandard


SEE ALSO
       chgrp(1),   chmod(1),  chown(2),  fpathconf(2),  passwd(4),  system(4),
       attributes(5), environ(5), largefile(5), standards(5)

NOTES
       chown is CSI-enabled except for the owner and group names.



SunOS 5.10                        21 Jun 2004                         chown(1)