2. Conventions

Commands that are executed in a shell or an xterm window as displays as follows:

example command.

user@yavdr:~$  sudo make me a sandwich

	The shell prompt shows that users user is logged into computer yavdr in his $HOME directory ^[2].
	this is the command that shall be executed ^[3]

Annotations to individual aspects will be highlighted with numbers in small, black circles.

Configuration files will be displayed with source code highlighting:

Example for the configuration file /etc/fstab ^[4].

# /etc/fstab: static file system information.
#
# Use 'blkid -o value -s UUID' to print the universally unique identifier
# for a device; this may be used with UUID= as a more robust way to name
# devices that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>   <type>  <options>       <dump>  <pass>
proc            /proc           proc    nodev,noexec,nosuid 0       0
# / was on /dev/sdb1 during installation
UUID=83a8163c-195b-4e85-a9ed-18478339dc3f /               ext4    errors=remount-ro 0       1
# swap was on /dev/sdb5 during installation
UUID=32fc4d86-ab86-4ed8-bf24-68aa98ec6d0c none            swap    sw              0       0

	Tips
	Tips are marked with this icon

	Notes
	Notes are marked with this icon

	Caution!
	Information is marked with this icons

	Important!
	Inportant information is emphazised by this icon

	Warning!
	Warnings are marked with this icon

^[2]the $HOME directory is an individual directory owned by an particular user. Usually, this is created in the path /home/<username>/. The tilde character ~ is a shortcut for this directory.

^[3]this example is aligned with http://xkcd.com/149/ and explains the superuser concept (refer to http://wiki.ubuntuusers.de/sudo).

^[4]this file specifies how file systems are linked into the root file system