FreeBSD® Unleashed

Advanced Features of Korn Shell Scripting

The Korn shell contains some advanced features that can make shell programming easier and more powerful. You should think carefully before using these features, however. The reason is that virtually every UNIX system can run a Bourne shell script; some will not be able to run a Korn shell script. If this script will be run only on your local system, this will not be a problem. Also, if you can be sure that this script will be run only on systems that have the Korn shell available, this will also not be a problem. If you are writing a shell script for public consumption, however, or if this script will run on multiple systems within your organization and you cannot be sure which shells will be available ...