Input two variable on single line

Shell Programming and Scripting
1

Can we input two variable on single line that separate by space example user input "list jpg" it will list all jpg files in current directory

2 
 
echo "list jpg" | while read extn1 extn2; do ls -l *$extn2; done # will list only jpg files
3

Sorry I mean in Perl

4 
 
$ cat test.pl 
#!/usr/bin/perl
$files = "list jpg";
@patterns = split(/ /,$files);
@files = <*$patterns[1]>;
foreach $file (@files) {
   print $file . "\n";
}
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