Linux并发执行很简单这么做就对了

&的并发功能 time for i in `grep server /etc/hosts | awk '{print $1}'`; do (ssh $i echo 123; sleep 1; echo 456 &); done real 0m0.063s user 0m0.016s sys 0m0.004s xargs的并发功能 time grep server /etc/hosts | awk '{print $1}' | xargs -P 24 -I {} ssh {} echo 123; sleep 1; echo 456 real 0m3.747s user 0m1.