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UGU: Unix Guru Universe - Unix Tip #4131- June 3, 2012
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Unix Tip #4131- June 3, 2012
GENERATE RANGES OF NUMBERS
Sometimes it is necessary to generate a range of
numbers for further use within a command pipe or
shell script. This can be done with some simple
sh-code:
------------------------ CUT HERE ------------------
#! /bin/sh
# range - Generate of numbers.
lo=$1
hi=$2
while [ $lo -le $hi ]
do
echo -n $lo " "
lo=`expr $lo + 1`
done
------------------------ CUT HERE ------------------
It can now be used a way like:
for i in `range 69 4711`; do ; done
This tip generously supported by: ulli@ucrc.org
NOTE: All tips provided are USE AT YOUR OWN RISK. Tips are submitted
by various unix admins around the globe. UGU suggest you read and
test each tip in a non-volitile environment before placing into
production.
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