Unzipping using system command ? I couldn't understand the command

someone wrote this and he said it was very helpful

    sys_cmd_unzip = @(z,d) ['"C:\Program Files\7-Zip\7z.exe" e -y -r -o"' d '" "' z '" *'];
      cellfun(@(z,d) system(sys_cmd_unzip(z,d)), all_zip_files, new_zip_file_dirs,'uniformoutput',false)

but the problem is that I couldn't understand this line:

    @(z,d) ['"C:\Program Files\7-Zip\7z.exe" e -y -r -o"' d '" "' z '" *'];

what does this do '"C:\Program Files\7-Zip\7z.exe" e -y -r -o"' d '" "' z '" *' and what is z and d? can anyone help me with this please?

Thank you

Answer 1

[Rik]

The cellfun function is used to apply a function each element of your cell array. By providing two cell arrays, the function is applied to each corresponding element.

In this case, the defined function takes in two inputs, where the first is named z and the second d. That means that z is the zip file name and d is the directory. The function then concatenates the several string parts, so it becomes a valid command.