Compaq DS20L User Guide - Page 89
Appendix A SRM Console, A.1 SRM Console Overview
View all Compaq DS20L manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 89 highlights
Appendix A SRM Console The SRM console is the command-line interface that supports the Tru64 UNIX and Linux operating systems. The SRM console is used to bootstrap the operating system, configure and test the system hardware, examine system options for errors, and set or change environment variables. This appendix describes the SRM console commands and environment variables. A.1 SRM Console Overview This section contains an overview of the SRM console and its use. The SRM console works very much like a Unix shell. It views your NVRAM and devices as a pseudo-filesystem. You can see this if you use the ls command. Also, it contains a fairly large set of diagnostic, setup, and debugging utilities. As in the Unix shell, you can pipe the output of one command to the input of another, and there is a more command that works not unlike the Unix one. To get a full listing of available commands, see Section A.3 or run: >>> help | more SRM has environment variables, a number of which are pre-defined and correspond to locations in NVRAM. You can view the entire list of environment variables and their values with the show command (there are quite a few of them, so you will probably want to pipe its output to more). You can also show variables matching a "glob" pattern - for example, show boot* will show all the variables starting in "boot". See Section A.20. Environment variables are categorized as either read-only, warm non-volatile, or cold non-volatile. The most useful pre-defined environment variables for the purposes of booting Linux are bootdef_dev, boot_file, boot_flags, and auto_action, all of which are cold non-volatile. To set environment variables, use the set command, like this: SRM Console A-1