Or, similarly:
#!/usr/bin/perl

use warnings;
use strict;

sub doit {
    print "How are you?\n";
}

seek DATA, 0, 0;

while (<DATA>) {
    print if /^sub doit {/ .. /^}/
}

__DATA__

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In reply to Re^2: how to write a subroutine content into a file by choroba
in thread how to write a subroutine content into a file by Pal-Cod3r

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