Shell Programming and Scripting

if [ "$#" == "0" ]
then
echo " Please mention the server name after the script"
elif ssh -o StrictHostKeychecking=no $1 "[ -d /abc/def/ ]" 2> /dev/null
then
ver=`ssh -o StrictHostKeychecking=no $1 "cat /abc/def/version" 2> /dev/null`
env=`ssh -o StrictHostKeychecking=no $1 "cat /abc/def/environment" 2> /dev/null`
echo "version name for server $1 is $ver"
echo "env name for server $1 is $env"
else
echo " /abc/def not present in the $1"
fi
exit 1

if [ "$#" == "0" ]
then
   echo " Please mention the server name after the script"
   exit 1
fi

unset dir                        # Ensure we have nothing confusing already set in here

ssh -o StrictHostKeychecking=no $1 \
 "ls -1d /abc/def;
 cat /abc/def/version;
 cat /abc/def/environment" |\
  while read dir
  do
     read ver
     read env
  done

echo "Reference directory ${dir:-not} present on $1"
echo "version name for server $1 is ${ver:-"Not Set"}"
echo "env name for server $1 is ${env:-"Not Set"}"