Chapter 12. Miscellaneous Tools and Utilities

The following are some common tasks that you can perform by using operating system commands. The command and an example of how to use the command are presented for each of the following:

• Locating a Command by Keyword (apropos Command)
• Displaying a Calendar (cal Command)
• Displaying Reminder Messages (calendar Command)
• Displaying Help Information for New Users (help Command)
• Starting Computer-Aided Instruction Courses (learn Command)
• Reminding Yourself When to Leave (leave Command)
• Factoring a Number (factor Command)
• Converting Units of Measure (units Command)
• Sending Messages to Another Logged-in User (write Command)
• Command Summary for Miscellaneous Tools and Utilities