CSCI 372 Computer Computer System Administration — 24 March

A word about set-uid

Find your system and create some data!

Either connect to your virtual system or connect to your Pi. Here is my Pi chart.

atyas-pi        IN      A
kazantsev-pi    IN      A

andrae-pi       IN      CNAME   uncacsci-pi-i
el-khouri-pi    IN      CNAME   uncacsci-pi-a
hayes-pi        IN      CNAME   uncacsci-pi-e
henderson-pi    IN      CNAME   uncacsci-pi-c
matney-pi       IN      CNAME   uncacsci-pi-w
mccallen-pi     IN      CNAME   uncacsci-pi-n
mcdaniel-pi     IN      CNAME   uncacsci-pi-s
nowak-pi        IN      CNAME   uncacsci-pi-k
sarkisov-pi     IN      CNAME   uncacsci-pi-j
schroeder-pi    IN      CNAME   uncacsci-pi-y
staley-pi       IN      CNAME   uncacsci-pi-v

Create a new partition and format it for the ext4 file system. Be careful about this. If you mess up you will not be able to boot your system!

Now make a copy of the class web page directory, /home/brock/csci372, into your new file system.

At this point, you can stop. You are ready for an upcoming homework assignment.


Privacy and encryption

Take a look at the Gnu Privacy Guard (GnuPG) Mini Howto (English).

Warning: Expect an upcoming homework like Homework 5 in the Spring 2013 CSCI 331.

My big FAT Geek Wading

It’s useful to have a little information about forensics of file system. It’s most useful if the information is about a widely used file system, like NTFS; but we will little for the good ole FAT system which, after all, is used in every digital camera and almost all USB sticks.

Here are a few useful references about he FAT file system.

On your Pi, look for the file /boot/cmdline.txt. We are going to find this the hard way in class!

You will need to take notes because my notes are nothing more than a script file of my latest attempt. (I hope I didn’t delete anything important when I got rid of all my bad commands.)

Warning: Expect an upcoming homework like Homework 7 in the Spring 2013 CSCI 331.