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chown(1)

chown(1)                         User Commands                        chown(1)



NAME
       chown - change file ownership

SYNOPSIS
   /usr/bin/chown
       /usr/bin/chown [-fhR] owner[:group] file...


       /usr/bin/chown -s [-fhR] ownersid[:groupsid] file...


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


       /usr/bin/chown -s -R [-f] [-H | -L | -P] ownersid[:groupsid] file...


   /usr/xpg4/bin/chown
       /usr/xpg4/bin/chown [-fhR] owner[:group] file...


       /usr/xpg4/bin/chown -s [-fhR] ownersid[:groupsid] file...


       /usr/xpg4/bin/chown -R [-f] [-H | -L | -P] owner[:group] file...


       /usr/xpg4/bin/chown -s -R [-f] [-H | -L | -P] ownersid[:groupsid] file...


DESCRIPTION
   /usr/bin/chown and /usr/xpg4/bin/chown
       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  file  system has a mountpoint option, rstchown, to restrict owner‐
       ship 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.


       chown  changes the ownership of each file to owner. owner can be speci‐
       fied as either a user name or a numeric user id. The group ownership of
       each  file can also be changed to group by appending :group to the user
       name.

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 ref‐
             erencing  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  specified
             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 hierar‐
             chy below it.


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


       -s    The owner and/or group arguments are Windows  SID  strings.  This
             option requires a file system that supports storing SIDs, such as
             ZFS.



       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  subdi‐
             rectories,  setting  the  specified  ownership ID as it proceeds.
             When a symbolic link is encountered, the owner of the target file
             is  changed, unless the -h or -P option is specified. 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  subdi‐
             rectories,  setting  the  specified  ownership ID as it proceeds.
             When a symbolic link is encountered, the owner of the target file
             is  changed,  unless the -h or -P option is specified. 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. Similarly,
                        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 specifies a group  ID  to  be
                        given  to each file. If a numeric group operand exists
                        in the group database as a group name,  the  group  ID
                        number  associated 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()   box;   cw(2.75i)  |cw(2.75i)  lw(2.75i)  |lw(2.75i)  ATTRIBUTE
       TYPEATTRIBUTE VALUE _ Availabilitysystem/core-os _  CSIEnabled.  See
       NOTES.  _ Interface StabilityCommitted _ StandardSee standards(5).


   /usr/xpg4/bin/chown
       tab()   box;   cw(2.75i)  |cw(2.75i)  lw(2.75i)  |lw(2.75i)  ATTRIBUTE
       TYPEATTRIBUTE VALUE _  Availabilitysystem/xopen/xcu4  _  CSIEnabled.
       See  NOTES.   _  Interface  StabilityCommitted  _  StandardSee  stan‐
       dards(5).


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 5.11                        25 Jul 2011                         chown(1)
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