Check out the secion on "File Structure" in UNIX book.

• .profile - executes everytime you start a new shell

• .sh_history - keeps a history of your UNIX commands

• .plan - 1 or more lines of text
  Shows up on your finger
  make sure it's readable with the chmod command

• .project - 1 line, no return at the end of the file
  Shows up on your finger
  Make sure it's readable with the chmod command

  
  

• $ chmod - Change permission of a file for Read/Write/eXecute
  
  • i.e.,
    
  • $ chmod 644 .plan

• $ ps - Reports process status
  
  • i.e.,
    
  • $ ps
    
  • $ ps -fu gilligan

• $ date - Get the system time & date