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Shell Programming and Scripting

Parallel for in a Script Shell

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# 1  
Old 05-01-2015
Parallel for in a Script Shell
Hello,
This is my Script which configure a list of nodes. ( 40 nodes, and the configuration 10 minutes)
Code:
#! /bin/sh
if [ $# -ne 1 ]
then
 echo "USE: ./start.sh nodes
 else
nb_lignes=`wc -l $1 | cut -d " " -f1`
  echo "$nb_lignes machines"
for i in $(seq $nb_lignes) 
//instructions
done
fi

My question:: Please how can i parallelize the loop for ?


Thanks a lot.
Best Regards.
# 2  
Old 05-01-2015
Hi

You could try something like:
Code:
for n in 15 28 37
do   ./start.sh $n &
done

If that is not what you want, please be more elaborate or use the search function of the forum, there are quite a few threads on this topic.

hth
# 3  
Old 05-02-2015
Run the entire //instructions in a subshell in the background like ( //instructions ) &.
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