Copyfile without overwriting

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Diana Acreala 2012-2-28

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https://ww2.mathworks.cn/matlabcentral/answers/30549-copyfile-without-overwriting

Hello!

How can I copy the content of a *.m file in another. I used copyfile('1.m','2.m') but with this command the content of 2.m will be overwriten by the content of 1.m.

Ex: 1.m content: test1; 2.m content: test 2. I am expecting to get after using copyfile the content of 2.m like: test 2, test1.

I also used the next lines but it is not looking ok.. % fid = fopen('first.m'); % F= fread(fid, '*char')'; % fclose(fid);

Thanks!

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采纳的回答

Honglei Chen 2012-2-28

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I don't think you can do that with copyfile. You can do it with fopen, but you need to open it with option 'a', and then append the content you want.

doc fopen

Here is an example

fid1 = fopen('1.m','r');
fid2 = fopen('2.m','a');
while 1
  tline = fgetl(fid1);
  if ~ischar(tline), break, end
  fprintf(fid2,'%s\n',tline);
end
fclose(fid1);
fclose(fid2);