Set Ubuntu volumn

alsamixer (1)        - soundcard mixer for ALSA soundcard driver, with ncurses interface
amixer (1) - command-line mixer for ALSA soundcard driver
gnome-alsamixer (1) - ALSA sound mixer for GNOME
Here is an example by using amixer to set the volumn 

Steps to setup git notify emails

1. chmod a+x /usr/share/doc/git-core/contrib/hooks/post-receive-email
2. cd ~/your-project-repository/.git/hooks/
3. ln -s /usr/share/doc/git-core/contrib/hooks/post-receive-email post-receive
4. cd ~/your-project-repository/.git/
5. open config file
6. add the following code
   [hooks]        mailinglist = your@email.address,second@email.address
        showrev = “git show -C %s; echo”
        emailprefix =…

Setting up public key authentication over SSH


Generate key on local machine

ssh-keygen -t rsa
It will ask you for a password but you can leave it blank.
Note you could also pick -t dsa if you prefer.

Ensure that the remote server has a .ssh directory