Similar to how you can use pack's:
N An unsigned long (32-bit) in "network" (big-endian) order.
Is there any method for packing a 64-bit integer in "network" (big-endian) order in Perl?
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You just have to find the right format in the [pack](http://perldoc.perl.org/pack.html) documentation. – brian d foy May 14 '12 at 20:16
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If your system supports the Q pack format, you can use Q> to get big-endian (since Perl 5.9.2):
% perl -e 'print pack("Q>", 1)' | hexdump -C
00000000 00 00 00 00 00 00 00 01 |........|
Alnitak
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Perfect! I should have RTFM about modifiers before asking. Thanks though. – GoldenNewby May 14 '12 at 08:49
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I love this 5.10 feature. It solved some weird pack problems for me. :) – brian d foy May 14 '12 at 20:16
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It's after 5.10 according to [the docs](http://perldoc.perl.org/functions/pack.html). A great [answer](https://stackoverflow.com/a/9716331/1831722) would include a way of doing in _before_ 5.10. – vesperto Sep 29 '17 at 15:04
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@vesperto it's 2017, why should anyone care about anything before Perl 5.10 ? – Alnitak Sep 29 '17 at 15:13
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@Alnitak some poor souls still have to use (i.e. no choice) legacy software. ;-) – vesperto Sep 29 '17 at 15:56