| Basics of Korn Shell | Environment | Programming-intro |
| Flow control | Input-Output | Process Handling |
Shell is a user interface between computer and a user. Windows-95, Dos, Os/2 are all Shells
as well as operating systems. Unix is an operating systems while Korn shell, Bourne Shell,
C shell are the user interface to the Unix operating systems. Shells are means and
ways to communicate with computer through command line.
If I want to e-mail me a calander of current month at the beginning of each month, I will use
cal | mail sbajwaIn this command, I am telling computer to throw the current calandar at output and them I am piping (|) that output to mail which is sending it to user sbajwa.
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| Fundamentals of Unix | Unix commands | User Accounts | Shell Programming |
| File Systems | Networking | Backups | Security |
| Installing software | Installing Hardware | Performance and Tuning | Some Useful Scripts |
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