Nested Loops for text file


 
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# 8  
Old 08-15-2019
With shell builtins:
Code:
FilePath="test_result.txt"
# read line by line
# temporarily add a : to the IFS (whitespace) and split on it
while IFS=":$IFS" read key val junk
do
  case $key in
  ("Vehicle")
    vehicle=$val
  ;;
  ("Tyre")
    if [ "$val" = "Four" ]
    then
      echo "$vehicle"
    fi
  ;;
  esac
done < "$FilePath"

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Class::Accessor::Fast(3)				User Contributed Perl Documentation				  Class::Accessor::Fast(3)

NAME
Class::Accessor::Fast - Faster, but less expandable, accessors SYNOPSIS
package Foo; use base qw(Class::Accessor::Fast); # The rest is the same as Class::Accessor but without set() and get(). DESCRIPTION
This is a faster but less expandable version of Class::Accessor. Class::Accessor's generated accessors require two method calls to accompish their task (one for the accessor, another for get() or set()). Class::Accessor::Fast eliminates calling set()/get() and does the access itself, resulting in a somewhat faster accessor. The downside is that you can't easily alter the behavior of your accessors, nor can your subclasses. Of course, should you need this later, you can always swap out Class::Accessor::Fast for Class::Accessor. Read the documentation for Class::Accessor for more info. EFFICIENCY
"EFFICIENCY" in Class::Accessor for an efficiency comparison. AUTHORS
Copyright 2007 Marty Pauley <marty+perl@kasei.com> This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. That means either (a) the GNU General Public License or (b) the Artistic License. ORIGINAL AUTHOR Michael G Schwern <schwern@pobox.com> SEE ALSO
Class::Accessor perl v5.18.2 2009-09-15 Class::Accessor::Fast(3)