# File lib/specinfra/command/debian/base/package.rb, line 3 def check_is_installed(package, version=nil) escaped_package = escape(package) if version cmd = "dpkg-query -f '${Status} ${Version}' -W #{escaped_package} | grep -E '^(install|hold) ok installed #{Regexp.escape(version)}$'" else cmd = "dpkg-query -f '${Status}' -W #{escaped_package} | grep -E '^(install|hold) ok installed$'" end cmd end