Date: Fri, 15 Sep 2017 19:20:22 -0400 From: Ernie Luzar <luzar722@gmail.com> To: RW <rwmaillists@googlemail.com> Cc: freebsd-questions@freebsd.org Subject: Re: Help scripting dns lookup using awk Message-ID: <59BC6036.8040709@gmail.com> In-Reply-To: <20170915143019.2e02d386@gumby.homeunix.com> References: <59BB24E4.6060908@gmail.com> <20170915143019.2e02d386@gumby.homeunix.com>
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RW via freebsd-questions wrote: > On Thu, 14 Sep 2017 20:55:00 -0400 > Ernie Luzar wrote: > >> The following sh script works, but runs very slow. > > Almost certainly the reason it's slow is that you are doing sequential > synchronous lookups. Switching to another language isn't going help > much. To speed it up you either need to switch to a language with a > DNS library that supports asynchronous lookups or fire-off parallel > child processes. The latter is easier. > How would I go about coding a sh script to fire-off parallel child processes?
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