home | O'Reilly's CD bookshelfs | FreeBSD | Linux | Cisco | Cisco Exam    

UNIX in a Nutshell: System V Edition

UNIX in a Nutshell: System V EditionSearch this book
Previous: Reference: read Chapter 4
The Bourne Shell and Korn Shell
Next: Reference: return




variable1 variable2


Prevent the specified shell variables from being assigned new values. Variables can be accessed (read) but not overwritten. In the Korn shell, the syntax variable = value can be used to assign a new value that cannot be changed.

Previous: Reference: read UNIX in a Nutshell: System V Edition Next: Reference: return
Reference: read Book Index Reference: return

The UNIX CD Bookshelf Navigation The UNIX CD BookshelfUNIX Power ToolsUNIX in a NutshellLearning the vi Editorsed & awkLearning the Korn ShellLearning the UNIX Operating System