i=1; while [ $i -le 10 ]; do echo $i; let i++; done;

# 1
# 2
# 3
# 4
# 5
# 6
# 7
# 8
# 9
# 10

# GNU bash, version 3.1.16(1)-release (i686-pc-linux-gnu)
# Copyright (C) 2005 Free Software Foundation, Inc.