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copied!<p>perhaps something like this could help</p> <pre><code>use strict; use warnings; # the desired string my $to_match = 'com/puppycrawl/tools/checkstyle/'; my $pattern = qr/ # compile the regex -> # start matching from the arrow -> \s+ # which is followed by a space " # and then a " $to_match # finally the desired string /x; while (my $line = <DATA>) { chomp $line; next if $line =~ /^\s*$/; next unless $line =~ /$pattern/; print $line, "\n"; } __DATA__ "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/SeverityLevelCounter" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/FilterSet" "com/puppycrawl/tools/checkstyle/Checker" -> "java/util/Locale" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/CheckstyleException" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/PackageObjectFactory" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/DefaultContext" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/AutomaticBean" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/FileSetCheck" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/Filter" "com/puppycrawl/tools/checkstyle/Checker" -> "com/puppycrawl/tools/checkstyle/api/AuditListener" "com/puppycrawl/tools/checkstyle/Checker" -> "java/lang/StringBuilder" "com/puppycrawl/tools/checkstyle/Checker" -> "java/lang/Exception" "com/puppycrawl/tools/checkstyle/Checker" -> "java/io/File" </code></pre>

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