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Full Discussion: error in if statement
Operating Systems Linux error in if statement Post 302194139 by era on Monday 12th of May 2008 09:54:57 AM
Old 05-12-2008
It would really help to see what the output is supposed to be, and what you are currently getting.

As an aside, you have multiple occurrences of an anti-pattern known as Useless Use of Cat, and also Useless Use of Grep and Useless Use of Test $?.

cat file | grep anything can always be rephrased as grep anything file as long as a single file is involved.

grep anything | awk '{ print $something }' can basically always be rephrased as awk '/anything/ { print $something }' (use the awk tolower() function on the search string to ignore case).

grep something; if [ $? -eq 0 ] ... can fruitfully be simplified to simply if grep something ...

This is not to pick on you (maybe pick a little bit on jim who ought to know better :-) -- rather an attempt at helping you make your scripts more idiomatic and readable.
 

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LEARN ABOUT DEBIAN

rdf::redland::statement

RDF::Redland::Statement(3pm)				User Contributed Perl Documentation			      RDF::Redland::Statement(3pm)

NAME

       RDF::Redland::Statement - Redland RDF Statement Class

SYNOPSIS

	 use RDF::Redland;
	 my $statement1=new RDF::Redland::Statement($statement);
	 my $statement2=new RDF::Redland::Statement($subject,$predicate,$object);
	 ...

	 if($statement->subject->equals($node)) {
	   ...
	 }

DESCRIPTION

       Manipulate RDF statements which comprise three RDF::Redland::Node objects.  Also used for partial statements which can have empty parts and
       are used for matching statements in statement queries of the model - see the RDF::Redland::Model.

CONSTRUCTORS

       new NODE NODE NODE|STATEMENT
	   Create a new statement from nodes or copy an existing statement.

	   If three NODEs are given, make a new statement from them.  Each Node can be a Redland::RDF:Node, a Redland::RDF::URI, a perl URI or a
	   string literal.  Otherwise STATEMENT must be an existing statement to copy.

       clone
	   Copy a RDF::Redland::Statement.

METHODS

       subject [SUBJECT]
	   Get/set the statement subject.  When a RDF::Redland::Node SUBJECT is given, sets the subject of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node subject.

       predicate [PREDICATE]
	   Get/set the statement predicate.  When RDF::Redland::Node PREDICATE is given, sets the predicate of the statement, otherwise returns a
	   reference to the statement RDF::Redland::Node predicate.

       object [OBJECT]
	   Get/set the statement object.  When RDF::Redland::Node OBJECT is given, sets the object of the statement, otherwise returns a reference
	   to the statement RDF::Redland::Node object.

       as_string
	   Return the statement formatted as a string (UTF-8 encoded).

       equals STATEMENT
	   Return non zero if this statement is equal to STATEMENT

OLD METHODS

       new_from_nodes SUBJECT PREDICATE OBJECT
	   Create a new RDF::Redland::Statement with the given RDF::Redland::Node objects as parts (or undef when empty for a partial statement).
	   Use instead:

	     $a=new RDF::Redland::Statement($subject, $predicate, $object);

       new_from_statement STATEMENT
	   Create a new RDF::Redland::Statement object from RDF::Redland::Statement STATEMENT (copy constructor).  Use instead:

	     $s=$old_statement->clone;

SEE ALSO

       RDF::Redland::Node

AUTHOR

       Dave Beckett - http://www.dajobe.org/

perl v5.14.2							    2011-02-04					      RDF::Redland::Statement(3pm)
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