Introduction

Despite the fact that Nokia has worked hard (and has mostly succeeded) at making Voyager the focal point of system configuration and monitoring, at times it is not adequate, and sometimes when power users want to stray from its grip and drop into the more familiar and powerful command shell. IPSO 3.6 has made this switch much easier with the addition of CLISH, the new Nokia command-line configuration shell.

Let's talk first about the IPSO boot sequence and how to use the boot manager. When things really go badly, we talk about how you can use system debugging tools to assist your interaction with Nokia support.

The IPSO command shell is simply the UNIX C-shell, or csh, so it is possible to write shell scripts using the shell built-in commands and system binaries. The shell and system binaries provided are based on those from FreeBSD 2.2.6, so if you need a command reference, you can use those UNIX manual pages, which you can find on the Internet. A good, useful subset of the FreeBSD base installation is part of the IPSO operating system. One section is devoted entirely to using the CLISH shell, new in IPSO 3.6.

Using the shell means you have access to all your familiar UNIX commands: vmstat, netstat, ifconfig, tail, grep, df, and many others. Various other useful utilities, such as Perl and the Bash shell, have been ported to IPSO. (See Appendix B for details on getting...