Zero Filling a Disk in Linux

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

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

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

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

Browsing all articles in linux

USB Multiboot Drive

This tool from pendrivelinux.com is a useful utility to help create a bootable USB pen drive with a menu system for booting into multiple operating systems. It works from within [...]

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 [...]

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.

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 [...]

cPanel: Adding Apache and PHP Modules

I needed to add mysqli support to cPanel and did so by logging in to the WHM on port 2087 scrolling down the left menu to Software and clicking EasyApache [...]

Changing the hostname in CentOS

Background: I made a tar backup of one system and wanted to untar that onto different hardware. A bit like cloning. However I needed to make sure the hostname and [...]

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 [...]

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 [...]

Website Vulnerability Scanning

So I tested out Skipfish today to do a quick check on a website / web server. Hosted on Google at: http://code.google.com/p/skipfish/ download it, extract it and make and run: [...]

Get Image Dimensions on the COmmand Line

Occasionally useful to find out the dimensions of an image without having to load an image editor or file manager. From the ImageMagick toolkit: identify myimage.jpg tiffinfo myimage.tif pnginfo myimage.png