How to address files that are starting with certain word

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Homayoon 2016-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/271887-how-to-address-files-that-are-starting-with-certain-word

评论： Jan 2016-3-8

Dear All,

In my main directory I do have 5 subdirectories(named 1,2,3,4 and 5) in all of which there is only one file whose name starts with 'word.' . (After . there is a 5-digit number)

I have written a code on the parent directory which goes into each subdirectories in the order. In each subdirectory I need to fopen the file whose name starts with 'word.', what should I do? Since I do not have any idea about the 5 digit number coming with the name of the file, I cannot use sprintf. Do you have any idea how I can do it?

If the 5-digit number was known then it was really simple as:

   input =  sprintf('%s%d','REAX.o',12345);
   fid = fopen (input, 'r');

But now it is confusing to me.

Thank you so much

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回答（1 个）

Jan 2016-3-7

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https://ww2.mathworks.cn/matlabcentral/answers/271887-how-to-address-files-that-are-starting-with-certain-word#answer_212634

编辑：Jan 2016-3-7

在 MATLAB Online 中打开

FileList = dir(fullfile(Folder, 'word.*'));
FileName = fullfile(folder, FileList(1).name));
fid = fopen(FileName);
...

You will find a lot of submissions in the FileExchange, which find files recursively in subfolders.

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Homayoon 2016-3-7

在 MATLAB Online 中打开

I figured it out and this was something that I was looking for: (I had to use sprintf for some reasons)

      foldername = sprintf('C:\\Users\\h\\h\\Tt\\Actual Analysis\\BI\\reverse-input\\New folder\\9\\%d',C(1,k));
    cd(foldername);
    filelist = dir(fullfile( 'REAX.o*'));
    filelist(1).name;
    out = sprintf ('C:\\Users\\h\\h\\Tt\\Actual Analysis\\BI\\reverse-input\\New folder\\9\\%d\\%s', C(1,k) ,filelist(1).name);
    fid = fopen(out,'rt');

Jan 2016-3-8

在 MATLAB Online 中打开

Sorry, Homayoon, this is a blind guessing.

You do not have to insert double slashes only to remove them using sprintf:

foldername = fullfile( ...
  'C:\Users\h\h\Tt\Actual Analysis\BI\reverse-input\New folder\9\', ...
   sprintf(%d', C(1,k)));
filelist = dir(fullfile(foldername, 'REAX.o*'));
out = fullfile(foldername, filelist(1).name);