for I in {1..10}; do echo $I; done
for I in 1 2 3 4 5 6 7 8 9 10; do echo $I; done
for I in $(seq 1 10); do echo $I; done
for ((I=1; I <= 10 ; I++)); do echo $I; done
numbered hostnames padded with zeros:
for ((I=1; I <= 29 ; I++)); do
echo `printf "node%02d\n" $I`;
done
http://www.cyberciti.biz/faq/bash-for-loop/
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