for shell

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

for VARIABLE in 1 2 3 4 5 .. N
do
	command1
	command2
	commandN
done

$ for i in `grep -rli enabled=1`; do 
	sudo sed -i -e '$aclean_requirements_on_remove=1' $i;
 done;

#!/bin/bash
for i in 1 2 3 4 5; do
  echo "counter: $i"
done

$ for i in 1 2 3 4 5; do echo "counter: $i"; done