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CHGRP(1)                         User CommandsCHGRP(1)NAME       chgrp - change group ownershipSYNOPSIS       chgrp [OPTION]... GROUP FILE...       chgrp [OPTION]... --reference=RFILE FILE...DESCRIPTION       Change  the  group of each FILE to GROUP.  With --reference, change the       group of each FILE to that of RFILE.       -c, --changes              like verbose but report only when a change is made       -f, --silent, --quiet              suppress most error messages       -v, --verbose              output a diagnostic for every file processed       --dereference              affect the referent of each symbolic link (this is the default),              rather than the symbolic link itself       -h, --no-dereference              affect  symbolic  links  instead  of any referenced file (useful              only on systems that can change the ownership of a symlink)       --no-preserve-root              do not treat '/' specially (the default)       --preserve-root              fail to operate recursively on '/'       --reference=RFILE              use RFILE's group rather than specifying a GROUP value       -R, --recursive              operate on files and directories recursively       The following options modify how a hierarchy is traversed when  the  -R       option  is also specified.  If more than one is specified, only the fi-       nal one takes effect.       -H     if a command line argument is a symbolic link  to  a  directory,              traverse it       -L     traverse every symbolic link to a directory encountered       -P     do not traverse any symbolic links (default)       --help display this help and exit       --version              output version information and exitEXAMPLES       chgrp staff /u              Change the group of /u to "staff".       chgrp -hR staff /u              Change the group of /u and subfiles to "staff".AUTHOR       Written by David MacKenzie and Jim Meyering.REPORTING BUGS       GNU coreutils online help: <https://www.gnu.org/software/coreutils/>       Report chgrp translation bugs to <https://translationproject.org/team/>COPYRIGHT       Copyright  (C) 2018 Free Software Foundation, Inc.  License GPLv3+: GNU       GPL version 3 or later <https://gnu.org/licenses/gpl.html>.       This is free software: you are free  to  change  and  redistribute  it.       There is NO WARRANTY, to the extent permitted by law.SEE ALSOchown(1),chown(2)       Full documentation at: <https://www.gnu.org/software/coreutils/chgrp>       or available locally via: info '(coreutils) chgrp invocation'GNU coreutils 8.30              September 2019CHGRP(1)