for loop is shell script code example
Example 1: for loop in shell script
for i in {1..5}
do
echo "Welcome $i times"
done
Example 2: loop bash
years=(2018 2019)
days=(74 274)
for year in "${years[@]}"; do
for day in $(seq -w ${days[0]} ${days[1]}); do
echo $year
echo $day
done
done