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The Perl documentation for Sys::Hostname contains:

Attempts several methods of getting the system hostname [...]. It tries the first available of [blah blah] , and the file /com/host. If all that fails it croaks.

What systems is this /com/host used on? It's a very ungooglable filename, and this is the first time I have heard of it.

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  • The only mention of /com I have found is in Apollo Domain/OS, where it is listed as "AEGIS Shell commands", but still no /com/host.
    – grawity_u1686
    Commented Jan 31, 2011 at 10:28

1 Answer 1

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If you were to look at the actual code for Sys::Hostname you would see this:

# method 6 - Apollo pre-SR10
|| eval {
    local $SIG{__DIE__};
    my($a,$b,$c,$d);
    ($host,$a,$b,$c,$d)=split(/[:\. ]/,`/com/host`,6);
}

so obviously it is on Apollo, pre SR10.

I have no idea what that means - it could be on the moon for all I know ;) Did they use Perl for the moon landings? So pre-SR10 could be before Saturn-V Rocket 10?

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  • That would be Apollo Domain/OS, a networked and somewhat Unix-like operating system for Apollo workstations. SR10 is the version number. (Facepalm queued for forgetting to check the source.)
    – grawity_u1686
    Commented Apr 19, 2011 at 14:09
  • @grawity you should swing by root-access chat - we're having a facepalm fest today.
    – Majenko
    Commented Apr 19, 2011 at 14:11
  • After some more research, it appears that "pre-SR10" means Apollo AEGIS, not Domain/OS (which started at SR10).
    – grawity_u1686
    Commented Apr 19, 2011 at 18:54
  • 1
    I still say it's something to do with the moon landings.
    – Majenko
    Commented Apr 19, 2011 at 18:56

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