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Full Discussion: argument count
Top Forums Shell Programming and Scripting argument count Post 302347070 by javajynx on Monday 24th of August 2009 08:37:07 PM
Old 08-24-2009
argument count
I'm writing a program that takes input from the user of a phone number or a name then either tells them if that entry doesn't exist in a text document or returns the entry if it does exist. But if they enter a name AND number it either returns the entry if it exists or adds it to the document.
To do this involves lots of if statements etcetc but to start I need to know how to tell the program if the user has only put in a number or name or if they've put in both name and number.

Long rant short is there a statement that tests if 1 or two arguments have been inputted?
would the following work?
Code:
if [ $1$2 ]
#test for number and name in document
elif [ $1 ] 
#test if its a valid number or name then test if it's in document

 

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LEARN ABOUT MOJAVE

xpath

XPATH(1p)                                               User Contributed Perl Documentation                                              XPATH(1p)

NAME

       xpath - a script to query XPath statements in XML documents.

SYNOPSIS

       xpath [-s suffix] [-p prefix] [-q] -e query [-e query] ... [file] ...

DESCRIPTION

       xpath uses the XML::XPath perl module to make XPath queries to any XML document. The XML::XPath module aims to comply exactly to the XPath
       specification at "http://www.w3.org/TR/xpath" and yet allows extensions to be added in the form of functions.

       The script takes any number of XPath pointers and tries to apply them to each XML document given on the command line. If no file arguments
       are given, the query is done using "STDIN" as an XML document.

       When multiple queries exist, the result of the last query is used as context for the next query and only the result of the last one is
       output.  The context of the first query is always the root of the current document.

OPTIONS

   -q
       Be quiet. Output only errors (and no separator) on stderr.

   -s suffix
       Place "suffix" at the end of each entry. Default is a linefeed.

   -p prefix
       Place "prefix" preceding each entry. Default is nothing.

BUGS

       The author of this man page is not very fluant in english. Please, send him (fabien@tzone.org) any corrections concerning this text.

       See also XML::XPath(3pm).

SEE ALSO

       XML::XPath(3pm).

HISTORY

       This module is copyright 2000 Fastnet Software Ltd. This is free software, and as such comes with NO WARRANTY. No dates are used in this
       module. You may distribute this module under the terms of either the Gnu GPL,  or under specific licencing from Fastnet Software Ltd.
       Special free licencing consideration will be given to similarly free software. Please don't flame me for this licence - I've put a lot of
       hours into this code, and if someone uses my software in their product I expect them to have the courtesy to contact me first.

       Full support for this module is available from Fastnet Software Ltd on a pay per incident basis. Alternatively subscribe to the Perl-XML
       mailing list by mailing lyris@activestate.com with the text:

               SUBSCRIBE Perl-XML

       in the body of the message. There are lots of friendly people on the list, including myself, and we'll be glad to get you started.

       Matt Sergeant, matt@sergeant.org

       This man page was added as well as some serious modifications to the script by Fabien Ninoles <fabien@debian.org> for the Debian Project.

perl v5.10.1                                                        2009-12-30                                                           XPATH(1p)
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