我怎么能在一个基础文件夹的子文件夹中的每一个运行的bash [英] How can I run a bash in every subfolder of a base folder

问题描述

我要优化我所有的*。PNG图像，发现的这所以我做的bash作为它说：

I want to 'optimize' all my *.png images and found this so I made the bash as it says with:

#!/bin/bash    
pngnq -vf -s1 *.png    
rename -f 's/-nq8.png$/.png/' *.png    
optipng -o7 *.png

在这里，我有2个问题：

And here I have 2 problems:

第一个是第二线（重命名）什么也不做......它应该改变所有命名图像 [名] -nq8.png 这是在bash的第一行原来的名称的结果。

The first one is that the second line (rename) does nothing... it is supposed to change all the images named [name]-nq8.png which is the result of the first line of the bash to the original name

第二，主要的问题是：我有一个文件夹命名为ImagesFolder和里面我有其他的文件夹更* .pngs，我要运行这个庆典在ImagesFolder的每个子文件夹，但我不知道如何做到这一点（我在UNIX和shellscripts等是新）和我试过没有工作或者是一个烂摊子...

The second and main problem is: I have a folder named ImagesFolder and inside I have other folders with more *.pngs and I want to run this bash in every subfolder of ImagesFolder but I don't know how to do it (I'm new in unix and shellscripts and so on) and what I tried didn't work or was a mess...

要更好地理解它我有什么是一样的东西：

To understand it better what I have is something like:

ImagesFolder
  |-Folder1
  |     |- Folder12
  |     |      |-20 images here
  |     |- Folder13
  |     |      |- 10 images more here
  |     |- 5 images here 
  |-more images

和我想的脚本从ImagesFolder运行

And I want the script to run from ImagesFolder

感谢你了！

推荐答案

我可能会做的是：

1）固定脚本，以便它在当前目录需要ARGS而不是通配的：

1) Fix the script so it takes args instead of the globbing in the current directory:

#!/bin/bash    
pngnq -vf -s1 "$1"    
mv "${1%.png}-nq8.png" "$1"
optipng -o7 "$1"

2），测试它，它的作品如预期

2) Test it that it works as intended

3）找到和的xargs 并行（我敢打赌，你有一个多核处理器）

3) Run it with find and xargs in parallel (I bet you have a multicore processor)

find . -name '*.png' -print0 | xargs -0 -P6 -n1 the_script

该脚本可以内嵌了。但我的主要观点的，使用并行如果你在多核。这将加速了很多东西。

The script could be inline too. But my main point its, use parallelism if you're on multicore. It will speed things up a lot.

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