A handy trick in bash that can be adapted to many useful tasks:
for i in {1..99}; do
echo $i
done
1
2..
97
98
99
100
Another tricky is if you need a 0 in front of the first letters:
for i in {1..12}; do
if [ $i -lt 10 ]; then
i=0"$i"
fi
echo $i
done
bash, scripting, iterationsa, adapted, tasks, echo, tricky, quot, fi,