Linux并发执行很简单,这么做就对了

time for i in `grep server /etc/hosts | awk '{print $1}'`; do (ssh $i "echo 123; sleep 1; echo 456" &); donereal 0m0.063suser 0m0.016ssys 0m0.004s

time grep server /etc/hosts | awk '{print $1}' | xargs -P 24 -I {} ssh {} "echo 123; sleep 1; echo 456"real 0m3.747suser 0m1.136ssys 0m0.112s