for loop range not working ksh

Question

I tried this,

#!/bin/ksh
for i in {1..10}
do
  echo "Welcome $i times"
done

in Ksh of an AIX box. I am getting the output as,

Welcome {1..10} times

What's wrong here? Isn't it supposed to print from 1 to 10?. Edit: According to perkolator's post, from Iterating through a range of ints in ksh?

It works only on linux. Is there any other work around/replacements for unix box ksh?

for i in 1 2 3 4 5 6 7 8 9 10

is ugly.

Thanks.

Solution

I think from memory that the standard ksh on AIX is an older variant. It may not support the ranged for loop. Try to run it with ksh93 instead of ksh. This should be in the same place as ksh, probably /usr/bin.

Otherwise, just use something old-school like:

i=1
while [[ $i -le 10 ]] ; do
    echo "Welcome $i times"
    i=$(expr $i + 1)
done

---

Actually, looking through publib seems to confirm this (the ksh93 snippet) so I'd try to go down that route.