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Category: Technology

Making Linux less dumb about failed DNS servers

Whenever one of the servers in /etc/resolv.conf is unreachable, Linux/glibc/whatever isn't smart enough not to retry it for a while. This results in a lot of services becoming unavailable, because a lot of them do reverse lookups on all incoming connections (like SSH), which will hang for the time-out of the first DNS server query. Read More »

Some links about Macbook sleep problems

My wife's macbook sometimes keeps waking up when you close it; it gets stuck in an endless sleep-wakeup loop. Here are some links about it that I've had in my e-mail forever: Read More »

Getting munin to run every 10 minutes

Munin is kind of inefficient and on my P4 2Ghz, it running every 5 minutes is too often, and the munin processes keep dying because locks already exist. You can't increase the munin-cron script to 10 minute intervals, because then rrdtool will generate gaps. Read More »

Adding a clock in screen to avoid your ssh’s from being killed

The world is filled with stupid routers, which kill all connections that have no activity for a while (even a very short while). I keep loosing my SSH sessions because of this. To fix it, I added a clock in my GNU screen bar: Read More »

Trying to reduce MySQL InnoDB disk usage after major reduction of data

So, two days ago, I tried to shrink my MediaWiki database and it almost worked, except the MySQL process wouldn't shrink along with it. Read More »

Shrinking/compressing a MediaWiki database

As of late, I haven't had a lot of time to chase after spammers, so – despite of anti-spam captchas and everything – a couple of my wikis have been overgrowing with spam. One after the other I've been closing them down to anonymous edits, even closing down user registration alltogether, but some a little too late. Read More »

Converting all tables in MySQL DB to InnoDB

#!/bin/bash exit 1 dbname="eorder" echo 'SHOW TABLES;' | mysql $dbname | awk '!/^Tables_in_/ {print "ALTER TABLE `"$0"` ENGINE = InnoDB;"}' | column -t echo 'SHOW TABLES;' | mysql $dbname | awk '!/^Tables_in_/ {print "ALTER TABLE `"$0"` ENGINE = InnoDB;"}' | column -t | mysql $dbname Read More »

Translating Dutch programming error messages

In .NET, you get Dutch errors when your Windows is in Dutch, which is hugely annoying. You can use this site to translate them, so that you can Google them. Read More »

My universal remote programming codes

Whenever this remote's battery is loose for a while, it forgets its programming. So, here it is: For computer, use the TV setting. Press 1 and 3 for a few seconds, then when the light turns on, enter 0677 as code. Read More »

Apache mod_proxy configuration for The Pirate Bay

I found several apache mod_proxy configs for setting up a proxy for The Pirate Bay, but none worked fully. Read More »