如何使用循环并行处理函数

Question

所以我有这个函数，我希望这个函数同时运行它本身包含的所有内容。到目前为止，它不起作用，并且根据其他消息来源，这就是您的操作方式。如果函数不是并行的，函数本身就可以工作。

#!/bin/bash
foo () {
    cd ${HOME}/sh/path/to/script/execute
    for f in *.sh; do  #goes to "execute" directory and executes all 
    #scripts the current directory "execute" basically run-parts without cron

        cd ~/sh/path/to/script
        while IFS= read -r l1 #Line 1 in master.txt
              IFS= read -r l2 #Line 2 in master.txt
              IFS= read -r l3 #Line 3 in master.txt
        do
        cd /dev/shm/arb
        echo ${l1} > arg.txt & echo ${l2} > arg2.txt & echo ${l3} > arg3.txt 
        cd ${HOME}/sh/path/to/script/execute 
        bash -H ${f} #executes all scripts inside "execute" folder
        cd ~/sh/path/to/script/here
        ./here.sh &
        cd ~/sh/path/to/script &
        done <master.txt
    done

}

export -f foo
parallel ::: foo

结果

#No result at all....., just buffers. htop doesn't acknowledge any 
#processes, and when this runs its pretty taxing on the cores.

master.txt 内容

如果这是相关的：

apple_fruit
apple_veggie
veggie_fruit
#apple changes
pear_fruit
pear_veggie
veggie_fruit
#pear changes
cucumber_fruit
...

我对使用并行非常陌生，不知道它在高级（和基本）情况下是如何工作的，所以循环会干扰吗？如果它确实干扰，是否有解决方法？

Answer 1

结果可能是这样的：

inner() {
  script="$1"
  parallel -N3 "'$script' {}; here.sh  {}"  :::: master.txt
}
export -f inner
parallel inner ::: ${HOME}/sh/path/to/script/execute/*.sh

这将使用来自 master.txt 的 3 个参数调用 ${HOME}/sh/path/to/script/execute/（和 here.sh）中的每个脚本，如下所示：

${HOME}/sh/path/to/script/execute/script1.sh apple_fruit apple_veggie veggie_fruit

您需要更改脚本以便：

• 他们从命令行获取参数（不是从arg.txt、arg2.txt、arg3.txt）。
• 他们将输出发送到标准输出