if and case Statements

Comparing if and case statements

Let’s compare the if and case statements in the if scriptifsmt and case script.casesmt First, we write them in a general form. Here is the result for the if statement:

if CONDITION_1
then
  ACTION_1
elif CONDITION_2
then
  ACTION_2
elif CONDITION_3
then
  ACTION_3
else
  ACTION_4
fi

The case statement looks this way:

case STRING in
  PATTERN_1)
    ACTION_1
     ;;

  PATTERN_2)
    ACTION_2
    ;;

  PATTERN_3)
    ACTION_3
    ;;

  PATTERN_4)
    ACTION_4
    ;;
esac

The differences between the ...