 | Understanding Shells |
 | Typing at the Command Line |
 | Editing and the Command Line |
 | Understanding Variables |
 | Customizing Environment Variables |
 | Working with the PATH Variable |
 | Working with the PROMPT Variable |
 | Working with the HOME Variable |
 | Understanding the History File |
 | Viewing the History File with fc |
 | Understanding Processes |
 | Listing Processes with ps and top |
 | Editing Process Priority with nice |
 | Managing Jobs |
 | Sending Signals to Processes |