linux command

1. What is "the shell"?
   1. What's an xterm, gnome-terminal, konsole, etc.?
   2. Starting a Terminal
   3. Testing the Keyboard
   4. Using the Mouse
2. Navigation
   1. File System Organization
   2. pwd
   3. cd
3. Looking Around
   1. ls
   2. less
   3. file
4. A Guided Tour
   1. /
   2. /boot
   3. /etc
   4. /bin, /usr/bin
   5. /sbin, /usr/sbin
   6. /usr
   7. /usr/local
   8. /var
   9. /lib
   10. /home
   11. /root
   12. /tmp
   13. /dev
   14. /proc
   15. /mnt
5. Manipulating Files
   1. Wildcards
   2. cp
   3. mv
   4. rm
   5. mkdir
6. I/O Redirection
   1. Standard Output
   2. Standard Input
   3. Pipes
   4. Filters
7. Permissions
   1. File permissions
   2. chmod
   3. Directory permissions
   4. Becoming the superuser for a short while
   5. Changing file ownership
   6. Changing group ownership
8. Job Control
   1. A practical example
   2. Putting a program in the background
   3. Listing your processes
   4. Killing a process
   5. A little more about kill