Yet another way, using IO::All and unpack, as your Data looks fixed length delimited: 
#!/usr/bin/perl -w
use strict;
use IO::All;

my @AoA;
push @AoA, [ unpack("A7 A8",$_) ] foreach io("file.txt")->getlines; 
foreach ( sort { $a->[0] <=> $b->[0] } @AoA ) {
    $_->[1] =~s/^ //;
    print $_->[0], " ", $_->[1],"\n"
}

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Miguel

In reply to Re: Sorting within a file by Miguel
in thread Sorting within a file by Anonymous Monk

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