Unix Commands:

NOTE all unix commands are case sensitive
• mkdir
  used to create a new directory -- mkdir public_html
• rmdir
  used to remove a directory -- rmdir classes
• chdir or cd
  used to change to another directory -- cd goes to the root
  cd .. goes up one level
  cd fred goes down one level to fred
  cd ../fred goes up one level and then back down to fred (which is at the current level)
• rm
  used to erase a file -- rm Index.html
• mv
  used to move a file -- mv Index.html index.html moves Index.html to index.html i.e. it renames it
  mv index.html ../index.html -- moves index.html up one level in the directory structure
• cp
  copies a file [just like mv except that the original remains]
• ctrl-Dor lo or logout
  used to log off the system
• passwd
  used to change password.
• note ctrl-alt-del is used to change the password in windows XP. I recommend that if you change your password in one place that you change it in the other place as well