git commands

https://www.kernel.org/pub/software/scm/git/docs/everyday.html

http://manpages.ubuntu.com/manpages/quantal/man1/git-buildpackage.1.html

list of instaaled software

All actions with apt (apt-get) are logged. These files are available in /var/log/apt/. To view the most recent history log, execute: less /var/log/apt/history.log These logs gets rotated (every month I guess), old files will be suffixed with a number and compressed. So to view the next history log, use: zless /var/log/apt/history.log.1.gz To view the logs available: ls -la /var/log/apt/

grub menu customiser

grub-customiser found by synaptic

grep utilities

how to omit some text in your search

http://droptips.com/using-grep-to-exclude-lines-containing-certain-characterstext

how to search recursively in a directory:

grep -r --include "*.txt" texthere .

http://stackoverflow.com/questions/1987926/how-do-i-grep-recursively 

multiple gcc on ubuntu:

http://stackoverflow.com/questions/7832892/how-to-change-the-default-gcc-compiler-in-ubuntu

hwo to get wget to work through a proxy

http://linuxers.org/tutorial/wget-proxy-how-run-wget-behind-proxy-server