wildcard in dir command - single char

how can i search files of pattern aaa0.... aaa1......

without finding the file aaa (without number)

at system dir command its " dir aaa? "

but i cant run this in matlab

i need the results as structure so i cant use system command

[Alex Mcaulley]

dir aaa* %??

Answer 1

[Stephen23]

dir does not support single-character wildcards.

You could remove the superfluous filenames afterwards, e.g.:

>> S = dir('aaa*.txt');
>> S.name
ans = aaa.txt
ans = aaa0.txt
ans = aaa1.txt
>> C = {S.name};
>> X = cellfun('isempty',regexp(C,'^aaa\d.txt$'));
>> S = S(~X);
>> S.name
ans = aaa0.txt
ans = aaa1.txt

[Anil Thota]

Hi,

I was able to use dir(['dddd\*_X??']) for listing all the directories ending _Xnn. Strangely, I am not able to use the same command in my laptop. Both the matlab versions are 2018a. I wonder why?

Best,

Anil

[Walter Roberson]

Are they the same operating system?

[Anil Thota]

Yes - Same Operating system. What is the wild character for specifying one character?

Thank you,

Anil

[Walter Roberson]

The Mathworks documentation says that wildcards for single characters is not supported.