linux – 如何在scp文件的同时并行化for循环？

我从machineA运行我的下面的 shell脚本,它将文件machineB和machineC复制到machineA.如果文件不在machineB中,那么它应该在machineC中.

下面的shell脚本会将文件复制到machineA中的TEST1和TEST2目录中.

#!/bin/bash
set -e

readonly TEST1=/data01/test1
readonly TEST2=/data02/test2
readonly SERVER_LOCATION=(machineB machineC)
readonly FILE_LOCATION=/data/snapshot

dir1=$(ssh -o "StrictHostKeyChecking no" david@${SERVER_LOCATION[0]} ls -dt1 "$FILE_LOCATION"/[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9] | head -n1)
dir2=$(ssh -o "StrictHostKeyChecking no" david@${SERVER_LOCATION[1]} ls -dt1 "$FILE_LOCATION"/[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9] | head -n1)

echo $dir1
echo $dir2

if [ "$dir1" = "$dir2" ]
then
    rm -rf $TEST1/*
    rm -rf $TEST2/*
    for el in $test1_partition
    do
        scp david@${SERVER_LOCATION[0]}:$dir1/pp_monthly_9800_"$el"_200003_5.data $TEST1/. || scp david@${SERVER_LOCATION[1]}:$dir2/pp_monthly_9800_"$el"_200003_5.data $TEST1/.
    done
    for sl in $test2_partition
    do    
        scp david@${SERVER_LOCATION[0]}:$dir1/pp_monthly_9800_"$sl"_200003_5.data $TEST2/. || scp david@${SERVER_LOCATION[1]}:$dir2/pp_monthly_9800_"$sl"_200003_5.data $TEST2/.
    done
fi

https://unix.stackexchange.com/questions/53390/is-there-a-way-to-run-process-parallelly-in-the-loop-of-a-bash-script

目前它首先将文件从machineB和machineC复制到machineA TEST1目录,如果完成,那么只有它会将文件从machineB和machineC复制到machineA TEST2目录..有没有办法我将文件传输到TEST1和TEST2目录同时出现？

我正在运行Ubuntu 12.04

解决方法

更换

done

同

done &

这将在后台启动两个for循环.

并完成脚本：

wait

这将等待两个for循环完成.