8.6 Options

8.6 Options

The FunnelWeb shell maintains three sets of command line options.

The set of options resulting from applying the operating system level

1.  

Tutorial

command line arguments to the default option settings.

A set of shell options that prevail during the shell invocation.

2.  

Developer

The set of option values active during a particular invocation of

3.  

FunnelWeb proper.

Reference

1 Introduction

When FunnelWeb is invoked from the operating system with just +F, only

2 Interface

the first of these three sets comes into existence. If the user invokes the

3 Scanner

FunnelWeb shell, the shell options come into existence and are initialized

with the value of the first set. These shell options are used as the default for

4 Parser

all subsequent fw commands. However, they can be altered using the script

5 Analyser

command set. If a fw command executed in a shell contains additional

6 Tangle

command line options, these override the shell options for that run, but do not

7 Weave

change the shell options. An example follows:

8 Shell

9 Commands

$ fw +k +t            ! Original invocation from OS.

10 Glossary

                      ! Options default with "+t".

11 References

FunnelWeb>fw sloth    ! Equivalent to fw sloth +t.

FunnelWeb>set  l      ! Change the l shell option.

SEARCH

FunnelWeb>fw sloth +q ! Equiv to fw sloth +t  l +q.

FunnelWeb>fw sloth    ! Equiv to fw sloth +t  l.

The existence of the shell option set means that the user can set up a set of

defaults to be applied to all fw commands issued within the shell.

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Copyright   Ross N. Williams 1992,1999. All rights reserved.

http://www.ross.net/funnelweb/reference/shell_options.html [3/3/2000 10:46:16 PM]