do not raise exception if ENV["PATH"] is nil
do not raise exception if ENV["PATH"] is nil

flash-gordon/ruby-plsql,JDominator/ruby-plsql,rsim/ruby-plsql,yahonda/ruby-plsql,jgebal/ruby-plsql,rsim/ruby-plsql,JDominator/ruby-plsql,yahonda/ruby-plsql,jgebal/ruby-plsql,jgebal/ruby-plsql