#/bin/bash

if [ $# -eq  ]; then

     counter=""

     counter1=""

    echo "for loop:"

    for i in $(seq  $); do

        echo $i

    done

    for i in $(seq   ); do

        echo "welcome $i times"

    done

    for((i=;i<;i++)); do

        echo $i

    done

    echo "while loop"

    while [ $counter -le $ ]; do

         echo $counter

          counter=$((counter+))

    done

    echo "until loop:"

    until [ $counter1 -gt $ ]; do

        echo $counter1

        counter1=$((counter1+))

    done

else

    echo "error"

fi