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
command line arguments to the default option settings.
A set of shell options that prevail during the shell invocation.
The set of option values active during a particular invocation of
FunnelWeb proper.
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.
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.
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]

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