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Full Discussion: Simple Calculator
Homework and Emergencies Homework & Coursework Questions Simple Calculator Post 302784895 by balajesuri on Saturday 23rd of March 2013 12:05:51 PM
Old 03-23-2013
Quote:
Originally Posted by herb bertz
In the command line enter the script file
/home/etc/mycalc or /home/etc/mycalc 1 + 1 . My script file should identify if the data needed to do the calculating is present (mycalc 1 + 1)
or if it needs to ask for input (mycalc).
Play around with positional parameters if you want to do such exercises. Here's a sample program to get you started.

Code:
[user@host ~]$ cat test.sh
#! /bin/bash

if [ $# -ne 2 ] # $# here is a special shell variable which gives you the number of command line arguments supplied
then
    echo "Please supply exactly two arguments."
    exit
fi

first=$1
second=$2

echo "First argument is: $first"
echo "Second argument is: $second"
[user@host ~]$ ./test.sh hello world
First argument is: hello
Second argument is: world
[user@host ~]$ ./test.sh
Please supply exactly two arguments.
[user@host ~]$

Quote:
Originally Posted by herb bertz
Also can anyone tell me how to automaticly get line numbers put in the script so when an error comes up it is easy to find the line without counting the lines?
Open the program in vi vi test.sh. In the command mode (press ESC key, if you're unsure which mode you're currently in) and type :set nu. This will display the line numbers without affecting the program functionality. To remove the line numbers type this in command mode :set nonu. And I hope you're using vi for writing your scripts and not some GUI editor.
 

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Dist::Zilla::Plugin::TemplateModule(3pm)		User Contributed Perl Documentation		  Dist::Zilla::Plugin::TemplateModule(3pm)

NAME
Dist::Zilla::Plugin::TemplateModule - a simple module-from-template plugin VERSION
version 4.300020 DESCRIPTION
This is a ModuleMaker used for creating new Perl modules files when minting a new dist with "dzil new". It uses Text::Template (via Dist::Zilla::Role::TextTemplate) to render a template into a Perl module. The template is given two variables for use in rendering: $name, the module name; and $dist, the Dist::Zilla object. The module is always created as a file under ./lib. By default, the template looks something like this: use strict; use warnings; package {{ $name }}; 1; ATTRIBUTES
template The "template" parameter may be given to the plugin to provide a different filename, absolute or relative to the build/profile directory. If this parameter is not specified, this module will use the boilerplate module template included in this module. MINTING CONFIGURATION
This module is part of the standard configuration of the default Dist::Zilla Minting Profile, and all profiles that don't set a custom ':DefaultModuleMaker' so you don't need to normally do anything to configure it. dzil new Some::Module # creates ./Some-Module/* # creates ./Some-Module/lib/Some/Module.pm However, for those who wish to configure this ( or any subclasses ) this is presently required: [TemplateModule / :DefaultModuleMaker] ; template = SomeFile.pm AUTHOR
Ricardo SIGNES <rjbs@cpan.org> COPYRIGHT AND LICENSE
This software is copyright (c) 2012 by Ricardo SIGNES. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. perl v5.14.2 2012-06-21 Dist::Zilla::Plugin::TemplateModule(3pm)
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