Shell Tips !

Joy ! I just get my new Mac Book Pro (2Go RAM / 2,4Ghz Core 2 Duo / 160Go HDD / etc.). So I’m playing a lot with VMware Fusion and multiple host (debian, ubuntu, solaris, windows, etc.) with a great fluidity ! A big improvement for me who was working with an old DELL Laptop with 1Ghz Celeron and 512Mo of Ram…

But, while playing with my new laptop and my multiple virtual instances I needed to flush my DNS Cache. So, here come the tips :

With Mac OS X <= 10.4 :

macvin:~ root# lookupd -flushcache

With Mac OS X > 10.5 :

macvin:~ root# dscacheutil -flushcache

Here is a quick post of a “quick and dirty” patch for the ISC DNS Server : Bind 9.5.0a6 and its dlz mysql driver. For the quick story, I was using Bind 9.4.1 with dlz MySQL. My MySQL server is a 5.0.41 (with solidDB). While using it, I realize that some times the dns server was returning empty value for the dns queries. I tried many tips but it was still (sometime) giving me empty answer… Of course, I suspected the dlz driver. So, I tried to upgrade to Bind 9.5.0a6 but the problem still happened and the only way to fix was to restart bind !

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