Editing large number of dat files

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012786534 2017-6-8

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关闭： MATLAB Answer Bot 2021-8-20

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Hello all,

I want to add the same comment to the second line of a large number of dat files and then place them in a new folder.

I was thinking of doing something like this:

    NewFiles = fullfile(pwd, 'NewFiles')
    if exist([pwd '\NewFiles'])~=7   
    mkdir(NewFiles);  
    end
files = dir(fullfile('*.dat')); 
filenames = {files.name};                 
    for i = 1 : length(filenames)
     fid(i) = fopen(files(i),'w');
     fprintf(fid,'try \n');
     fclose(fid);
     dlmwrite(fname,'-append') ; 
    end