I want to get the messages that Linux shows during boot process or shuting down. But they come an go fast and I cannot read them. Where are they stored on my system?
This will be over soon, and then I can ...
Try looking at /var/log/dmesg (you can do it as a unpriv user) with your favourite text editor
Also /var/log/messages has all the kernel messages in it while the system is booting and running, it is a good place to start looking if anything is going wrong on your box (but you have to be superuser to see it: eg: su -l root).