Zero Filling a Disk in Linux

The simple way to wipe or zerofill a disk is: dd if=/dev/zero of=/dev/sd? bs=1M However I found an article describing how to zero-fill with a progress indicator using pipebench, installed on Debian/Ubuntu ...

Increasing CentOS LVM under VMWare

Background: I had an existing CentOS machine as a virtual machine running on VMWare ESX Server and it was running out of space so for future reference I did the ...

SquidGuard LDAP User Search and Special Characters

So I had a problem with the ldapusersearch string as some eejit has created an OU with spaces and an apostrophe in the name. So the characters are represented as: comma ...

Flushing local client DNS cache

From info I found here. This is how to flush the local client DNS cache. Windows: ipconfig /flushdns Linux: sudo /etc/init.d/networking restart Mac: lookupd -flushcache

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Browsing all articles from February, 2011

Written by jonny in php

28
Oct
2011

PHP Web Scraping for Munin

There is a web page created by someone else containing figures I would like to use to draw some graphs in Munin. The HTML in that page is a bit [...]

Written by jonny in squid

20
Oct
2011

Squid Problems

Todays installment in the Adventures of Squid Sandwich: Forwarding loop detected WARNING: Forwarding loop detected for: in /var/log/squid/cache.log Since I am using a DansGuardian sandwich with Squid for bread I [...]

Written by jonny in linux

20
Oct
2011

Linux: What is using all the Swap?

On Linux to discover which processes are using all the swap run top press ‘O’ (capital letter o) then ‘p’ then ‘enter’ Processes should be sorted by their swap usage.As [...]

Written by jonny in linux, red hat centos

19
Oct
2011

Uptime 4 years

Since I like posting screeshots of uptime figures here is one of an anti-spam machine up for 1496 days (just over 4 years). The machine is running Red Hat 4.

Written by jonny in rants, windows

18
Oct
2011

The Cost of Microsoft Windows 7

It’s free – it came with my computer Love them or hate them Microsoft are effective in business. One of their methods of peddling their product is to ensure that [...]

Written by jonny in gimp, rants

14
Oct
2011

Gimp and Pareto’s Principal

Pareto’s Principal, also known as the 80/20 rule, this principle holds that for any given event, 80% of the results come from 20% of the activity. For example, if you [...]

Written by jonny in apache, linux, mysql, php, ubuntu

9
Oct
2011

LAMP on Ubuntu

There are several different commands that can be used to install Apache and MySQL services with PHP support: sudo apt-get install tasksel && sudo tasksel sudo apt-get install lamp-server^ sudo [...]