Pegley - Linux Quick Reference

Linux Quick Reference Page

All the stuff you need infrequently and can never remember.

Mount an ISO image on linux

create you mount point first:

mkdir /media/isodisk

mount -o -r -loop /<path to iso image> /media/isodisk

(-r option makes it read only, which removes the risk overwriting anything on the iso image

Disable Nvidia Splash Screen

cd /etc/X11

Add the following to the xorg.conf file under the Section "Screen"

"NoLogo" "True"

for example:

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "NoLogo" "True"

then you have maybe Twinview options and metamodes before you reach

EndSection

This is based on Centos 5 OS.

Using hosts.txt File to Block Domains

By pointing a domain name to your loopback address you can permanently block referred internet traffic from that site. This prevents downloading of images and files from a site and can improve web browsing. It is highly effective at blocking data mining companies such as doubleclick.

Hosts file location:

Linux: /etc/hosts
Windows Vista: c:/Windows/System32/hosts

Here is an example of a hosts.txt file from Windows:

127.0.0.1 localhost
::1 localhost
127.0.0.1 doubleclick.net

So in this example, if you are reading a webpage that refers details or loads data from doubleclick.net your browser will identify that domain as 127.0.0.1 which is actually your local computer. This means no information is sent to doubleclick and no tracking files are downloaded. As your browser doesnt need to wait for the files from doubleclick it will improve the speed of loading.