accesses a folder and changes the file name in that folder in matlab

To access a folder in MATLAB, use the cd command followed by the path to the directory you want to access. Then, to change the name of a file in that directory, use the movefile function.

Here's an example code snippet that changes the name of a file in a directory:

main.m
% Accessing folder
cd('/path/to/directory');

% Renaming file
oldName = 'old_file_name.txt';
newName = 'new_file_name.txt';
movefile(oldName, newName);
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Make sure to replace '/path/to/directory' with the actual path to the directory you want to access, and 'old_file_name.txt' and 'new_file_name.txt' with the actual names of the file you want to rename and the new name you want to give it, respectively.