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post_install() { echo -n 'Adding vlock group... ' groupadd -g 129 vlock && echo 'done.' } post_upgrade() { cut -d: -f1 /etc/group | grep ^vlock$ >/dev/null if [ $? == 1 ] ; then post_install fi } post_remove() { echo -n 'Removing vlock group... ' groupdel vlock && echo 'done.' } # vim:set ts=2 sw=2 et: