perform kinit if there is no kerberos ticket

kcheck

#!/bin/bash

while ! klist -s ; do
   ERR=$( kinit 3>&2 2>&1 1>&3- )
   EC=$?
   if [ $EC -ne 0 ] ; then
      echo $ERR
      if ( echo $ERR | grep -q "Cannot contact any KDC" ) ; then
         exit 2
      fi
   fi
done