# whoami root # ls -l file -r--r----- 1 user group 1024 2009-05-05 11:12 file # chown user2 file chown: changing ownership of `file': Operation not permitted
# lsattr file ----i-------------- file # chattr -i file # chown user2 file # ls -l file -r--r----- 1 user2 group 1024 2009-05-05 11:12 file