解析ls，不推荐 [英] Parsing ls, not recommended

问题描述

我收到了关于不解析ls的建议，如本网站中所述:不解析ls .
我一直在目录中寻找DAILY文件，所以我就是这样做的:

I received a advice for do not parse ls, like describes in this website: Don't parse ls.
I was looking for DAILY files in my directory so that's what I did then:

for f in *.DA*; do   
    [[ -e $f ]] || continue 
    for file in $f; do  
        echo "The file that you are working on: "$file
        archiveContent=$( sed -n -e 1p $file )
        echo $archiveContent
    done
done  

好的，这很好，我有两个文件A.DAILY和B.DAILY，使用这两个归档文件我都可以获取其中的内容，但是当我稍微修改一下循环时，它不会进行迭代我目录中所有扩展名为.DAILY的文件.

Ok, that's works well, I've two files A.DAILY and B.DAILY, with the both archives I can get what is inside it, but when I changed a little bit the loop, it doesn't iterated with all files with .DAILY extension in my directory.

for f in *.DA*; do     
    [[ -e $f ]] || continue     
    for file in $f; do    
        echo "The file that you are working on: "$file    
        archiveContent=$( sed -n -e 1p $file )
        echo $archiveContent  
        COMPRESS $archiveContent;    
    done  
done  

当我在循环内调用一个函数时，循环仅对第一个文件有效，而对第二个文件无效.

when I called a function inside the loop, the loop just does for the first file, but not to the second.

推荐答案

由于外部循环又将f设置到每个文件，因此内部循环似乎没有任何作用.

Since the outer loop sets f to each file in turn, your inner loop doesn't seem to serve any purpose.

for f in *.DA*; do
    [[ -e $f ]] || continue     
    echo "The file that you are working on: $f"    
    archiveContent=$( sed -n -e 1p "$f" )
    echo "$archiveContent"  
    COMPRESS "$archiveContent"
done  

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