Iterating through a range of ints in ksh?

Question

How can I iterate through a simple range of ints using a for loop in ksh?

For example, my script currently does this...

for i in 1 2 3 4 5 6 7
do
   #stuff
done

...but I'd like to extend the range way above 7. Is there a better syntax?

Answer 1

Curly brackets?

for i in {1..7}
do
   #stuff
done

Answer 2

While loop?

while [[ $i -lt 1000 ]] ; do
    # stuff
   (( i += 1 ))
done

Answer 3

on OpenBSD, use jot:

for i in `jot 10`; do echo $i ; done;