Rename of multiple files

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UWM
UWM 2021-4-8
评论： UWM 2021-4-9
I have many folders and in each I have potentially 480 txt files (“potentially” because in some folders some files are missing) which names changing in ascending order from:
(red number change from 1 to 10, green letter changes from “a” to “x” (24 letters) and blue number is 00 or 30).
A would like to rename file according to the following rule:
So finally, I should get:
1.txt
2.txt
3.txt
4.txt
…
47.txt
48.txt
49.txt
…
480.txt
How it could be done in matlab?

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采纳的回答

Saravanan Sengottuvel
letter = 'a':'x';
blue1 = '00';
blue2 = '30';
i = 1;
arr = linspace(1, 480, 480);
for id = 1:10 % loop for red number (1 to 10)
for j = 1:24 % loop for green letters (a to x)
if id < 10
f00 = strcat('aaaa00',num2str(id), letter(j),blue1,'.txt');
f30 = strcat('aaaa00',num2str(id), letter(j),blue2,'.txt');
try
movefile(f00, strcat(num2str(arr(i)), '.txt'), 'f')
i = i+1;
movefile(f30, strcat(num2str(arr(i)), '.txt'), 'f') % renaming file
catch
end
i = i+1;
else
f00 = strcat('aaaa0',num2str(id), letter(j),blue1,'.txt');
f30 = strcat('aaaa0',num2str(id), letter(j),blue2,'.txt');
try
movefile(f00, strcat(num2str(arr(i)), '.txt'), 'f')
i = i+1;
movefile(f30, strcat(num2str(arr(i)), '.txt'), 'f') % renaming red number file 10 and above
catch
end
i = i+1;
end
end
end
Hope the above code works for you. It maynot be the optimal solution, but it solves yours problem.
  1 个评论
UWM
UWM 2021-4-9
Thank you very much Saravanan. Now it works perfectly!

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更多回答（2 个）

Saravanan Sengottuvel
Get the name of all files with .txt extension in a directory
files = dir('*.txt');
Run a loop over the collected file names
for id = 1:length(files)
[~, name, ext] = fileparts(files(id).name);
new_filename = strcat(num2str(id), ext);
movefile(files(id).name, new_filename, 'f');
end
  1 个评论
UWM
UWM 2021-4-8
Thank you for your help, but...
that's not exactly what I meant though. The problem is with files which are missing e.g. if in the folder there will be no two files (e.g. aaaa001b00.txt and aaaa001b30.txt) the last one (aaaa010x30.txt) will have name 478.txt but should have: 480.txt...

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Jan
Jan 2021-4-8
SrcFolder = 'C:\Your\Folder\';
DestFolder = 'C:\Your\Converted\Output\';
FileList = dir(fullfile(SrcFolder, 'aaaa*.txt')); % Does this catch all wanted files?!
for k = 1:numel(FileList)
Name = FileList(k).name;
CCC = sscanf(Name(5:7), '%d');
R = (Name(8) - 'a') * 2 + (Name(9) == '3') + 1;
Num = (CCC - 1) * 48 + R;
newName = sprintf('%d.txt');
fprintf('%s ==> %s\n', Name, newName); % Does this work as expected?!
Src = fullfile(SrcFolder, Name);
Dest = fullfile(DestFolder, newName)
% copyfile(Src, Dest); % Uncomment this after the code was tested
end
By the way, the file names 1.txt, 2.txt, ... is the topic of many questions in this forum. Usually '0001.txt', '0002.txt', ... is better, because then the alphabetical order equals the numerical order. Use this:
newName = sprintf('%04d.txt');

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