How do I search a directory for an already existing file name and if it is present, save a new file name the same as the old one but with an iteration number at the end of it?

Hello,

I am wondering if anybody could help me out with my problem? I am trying to search a directory for an existing file name and if it exits, save a new file with the existing file name but with an iteration number after it. For example I have a file called 'processed_results_Br0' and I want to save a new file as 'processed_results_Br0_RUN1' if the file exists. I have written the following code in an attempt to implement what I am describing:

dir_string = 'C:\Ripple\';

mkdir (dir_string);

output_file_name = ['processed_results_' name_str];

filesAndFolders = dir(dir_string);

for i=1:length(filesAndFolders)

      if ~isempty(strfind(filesAndFolders(i).name,output_file_name))
          run_index = strfind(filesAndFolders(i).name,'_RUN');
          if ~isempty(run_index) && (filesAndFolders(i).name(end) ~= 'N')
              run_iteration = i
          else
              display('Test');
              run_iteration = filesAndFolders(i).name(run_index+4);
          end
      end

end

Answer 1

[Fangjun Jiang]

How about use some of the functions?

fullfile()
exist(..,'file')
copyfile()

Answer 2

[Bish Erbas]

curDir = pwd;
files = dir(curDir);
files = files(~ismember({files.name},{'.','..'}));
fileToSearch = 'processed_results.dat';
for k = 1:length({files.name})
  idx = cellfun(@ (x) strcmp(x,fileToSearch), {files.name});
  myFullFile = fullfile(curDir,files(idx).name);
  copyfile(myFullFile,[myFullFile '_RUN1']);
end