gunzip subfolders at once

Hello, I have gz files stored in many sub-sub-folders; is there way I can gunzip all files at once into a single folder single_folder without looping over each sub-sub-folder?

C:\Main\Data\subf1\subf2\subf3\subf4\subf5\subf6

The gz files are in subf6

To use gunzip I have to be in subf6

filenames = gunzip(????,'single_folder');

Is there a way to gunzip standing in subf1?

Answer 1

[Dave B]

You can pass wildcards to gunzip (note that the first example does exactly this):

fp = 'C:\Main\Data\subf1\subf2\subf3\subf4\subf5\subf6';
gunzip(fullfile(fp,'*.gz'),'single_folder'); % or maybe you want the output to be fullfile(fp, 'single_folder')?

[Dave]

Thanks but that line creates the folder containing only the unzipped gz files of subf6. I would need all the unzipped gz contained in all subfolders starting from subf1

Doing

fp = 'C:\Main\Data\subf1'
gunzip(fullfile(fp,'*.gz'),'single_folder'); 

Yields

Dot indexing is not supported for variables of this type.

Error in gunzip (line 92)
names = matlab.io.internal.archive.core.builtin.uncompressgz({entries.file}, outputDir);

In the end, the folder single_folder should contain all the unzipped (csv) files from all subfolders, not just sub6

Note there are many subf1 (subf2_1 , subf2_2...), likewise for subf3 and so on

[Dave]

on a second note, that is helpful enough since looping does not override single_folder

danke

[Dave B]

Sounds like it works, sorry I misunderstood the question!

For future reference an alternative strategy is to build up the list of files and pass the list to gunzip

fl=dir(fullfile(fp,'**/*.gz')
fl=fullfile({fl.folder},{fl.name});
gunzip(fl,'single_folder')