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#!/bin/bash
parssh () {
[[ "$1" == -[0-9]* && "$1" != *[^0-9-]* ]] && {
local parssh_concurrency=${1#-}
shift
}
while read host; do
while (( $(jobs -pr | wc -l) >= ${parssh_concurrency:-4} )); do
sleep 1;
done;
ssh -no StrictHostKeyChecking=no $host "$@" &
done
}
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