Throw an error when more than one result is returned

I have this running at the beginning of my script where it will look for two files in the directory the script is run in. I'm trying to add a check to throw an error if the 'ls' command returns more than one result. For example if there is 01-data.csv and 02-data.csv in the same directory, it will report an error that more than one result was found.

[status, data1] = system('ls *data.csv');

[status, info1] = system('ls *info.csv');

data1 = readtable(deblank(data1));

info1 = readtable(deblank(info1));

I am not too familiar with MATLAB so any help would be greatly appreciated. Thank you!

Answer 1

[Fangjun Jiang]

use

files=dir('*data.csv');
size(files)

[ArtLabbe12]

Thank you, this has given me some ideas of how to continue.