 | Chapter 1 Introduction |  |
| Chapter 1 Introduction | |
Those of you making a transition to SVR4 from a BSD-derived system
should note that BSD commands reside in your system's /usr/ucb directory.
This is especially important when using certain commands,
because the compatibility packages include
several commands that have an existing counterpart in SVR4,
and the two versions work slightly differently.
If your PATH variable specifies /usr/ucb before the
SVR4 command directories (e.g., /usr), you'll end up running
the BSD version of the command. Check your PATH variable
to make sure that you're getting what you want. The commands that have
both BSD and SVR4 variants include:
| basename | du | ln | sum |
| cc | echo | ls | test |
| chown | groups | ps | tr |
| deroff | install | shutdown | vacation |
| df | ld | stty |
This guide describes the SVR4 version of the above commands.
|  | |
| 1.4 Beginner's Guide |  | 2. UNIX Commands |
