Your requirements are not crystal clear to me. I see that your original program (turned into a Short, Self-Contained, Correct Example): 

use strict;
use warnings;
use Data::Dumper;

my $path = '/.snapshots123/yabsm/root/hourly/day=2021_03_04,time=21:20
+';

my $end_of_path;
$end_of_path = $1 if $path =~ m/([^\/]+$)/;

my @nums = $end_of_path =~ m/([0-9]{2,4})/g;
print Dumper( \@nums );

[download]
prints: 
$VAR1 = [
          '2021',
          '03',
          '04',
          '21',
          '20'
        ];

[download]

... as does my simpler version: 

use strict;
use warnings;
use Data::Dumper;

my $path = '/.snapshots123/yabsm/root/hourly/day=2021_03_04,time=21:20
+';

my @nums = $path =~ m{/day=(\d\d\d\d)_(\d\d)_(\d\d),time=(\d\d):(\d\d)
+$};
print Dumper( \@nums );

[download]
Does my version satisfy your requirements?

In reply to Re: How can I combine these two regular expressions? by eyepopslikeamosquito
in thread How can I combine these two regular expressions? by thirtySeven

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