如何循环遍历unix shell脚本中与正则表达式匹配的文件

I want to be able to loop through a list of files that match a particular pattern. I can get unix to list these files using ls and egrep with a regular expression, but I cannot find a way to turn this into an iterative process. I suspect that using ls is not the answer. Any help would be gratefully received.

我希望能够循环遍历与特定模式匹配的文件列表。我可以让unix使用带有正则表达式的ls和egrep列出这些文件,但我找不到将其转换为迭代过程的方法。我怀疑使用ls不是答案。我们将非常感激地提供任何帮助。

My current ls command looks as follows:

我当前的ls命令如下所示:

ls | egrep -i 'MYFILE[0-9][0-9]([0][1-9]|1[0-2])([0][1-9]|[12][0-9]|[3][01]).dat'

I would expect the above to match:

我希望上面的内容匹配:

MYFILE160418.dat
myFILE170312.DAT
MyFiLe160416.DaT

but not:

MYOTHERFILE150202.DAT
Myfile.dat
myfile.csv

Thanks,

Paul.

2 个解决方案

#1

You can use (GNU) find with the regex search option instead of parsing ls.

您可以使用(GNU)查找正则表达式搜索选项而不是解析ls。

find . -regextype "egrep" \
       -iregex '.*/MYFILE[0-9][0-9]([0][1-9]|1[0-2])([0][1-9]|[12][0-9]|[3][01]).dat' \
       -exec [[whatever you want to do]] {} \;

Where [[whatever you want to do]] is the command you want to perform on the names of the files.

其中[[您想要做什么]]是您要对文件名称执行的命令。

From the man page

从手册页

-regextype type
          Changes  the regular expression syntax understood by -regex and -iregex tests 
          which occur later on the command line.  Currently-implemented types are 
          emacs (this is the default),posix-awk, posix-basic, posix-egrep and 
          posix-extended.

  -regex pattern
          File name matches regular expression pattern.  This is a match on the whole 
          path, not a search.  For example, to match a file named `./fubar3', you can 
          use the regular expression
          `.*bar.' or `.*b.*3', but not `f.*r3'.  The regular expressions understood by 
          find are by default Emacs Regular Expressions, but this can be changed with 
          the -regextype option.

  -iregex pattern
          Like -regex, but the match is case insensitive.

#2

Based on the link Andy K provided I have used the following to loop based on my matching criteria:

基于Andy K提供的链接,我使用以下内容根据我的匹配条件进行循环:

for i in $(ls | egrep -i 'MYFILE[0-9][0-9]([0][1-9]|1[0-2])([0][1-9]|[12][0-9]|[3][01]).dat' ); do             
 echo item: $i;         
done

#1