If the last column is equal "R" then... Is it possible? In unix

Question

I need to find the last column from a variable that contains some fields. I need to write something like:

    if [ #the last column = "R" ];
    then
    value=`echo "'$value'"`
    fi

Is it possible?

Answer 1

More universal code assuming separation by spaces:

case $var in
  (*\ R) printf "%s\n" "$var"
esac

Or:

if [ "${var##* }" = R ]; then
  printf "%s\n" "$var"
fi