Bash Scripting 
Wednesday, June 29, 2011, 11:46 PM Misc
Bash supports numerical looping by:
for (( I = 0; I < 10; I++ ));
do;
something;
done;
This includes variable substitutions, allowing the min/max to be set by variables.
BASH also supports
for I in {1..10};
but the numbers have to be hard coded (no variable substitution).
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