gistfile1.txt

# set -e
# if set -e was actually set, the first time the -f command
# returns non-zero, the entire program would exit with the return code
# from the ssh command. DO NOT WANT

while true
do
  retval=`ssh user@some.server.com "ls -1 $src_dir/nz_${DOMAIN}_done.flag 2>/dev/null|wc -l"`
  if [[ $retval -eq 0 ]]
  then
    sleep $SLEEP_DURATION
    echo "`date` waiting....on nz_${DOMAIN}_done.flag"
  else
    break
  fi
done