Linux chgrp won't work when I'm the owner of file

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http://stackoverflow.com – I am trying to change the group ownership on a file that I created but I am getting some errors... Here is what I get when I do ls -l: dhunt@ict462 assignment 1]$ ls -l resolv.conf -rw-r--r-- 1 dhunt ict462 78 Jan 20 19:34 resolv.conf And then I try to do this: [dhunt@ict462 assignment 1]$ chgrp -Rv etcgroup resolv.conf And I get this error: chgrp: changing group of resolv.conf': Operation not permitted failed to change group ofresolv.conf' to etcgroup (HowTos)