bash wildcard n digits

Question

So I\'ve got the following files in the tmp directory:

 file.0
 file.1
 file.t9
 file.22
 file.4444

if I wanted to list only the files that

Answer 1

You can use ls just to list all the files then filter the output of that through grep:

ls -1 | grep -E '\.[0-9]+$'

as per the following test:

pax> printf 'file.0\nfile.1\nfile.t9\nfile.22\nfile.4444\n' | grep -E '\.[0-9]+$'
file.0
file.1
file.22
file.4444

The -E gives you extended regular expressions so that the + modifier works. If that's not available to you, you can use the \.[0-9][0-9]*$ regex instead.