$dpkg –print-architecture amd64 $dpkg –print-foreign-architectures $dpkg –add-architecture i386 dpkg: error: unable to create new file ‘/var/lib/dpkg/arch-new’: Permission denied $sudo dpkg –add-architecture i386 [sudo] password for jeffrin: $dpkg –print-foreign-architectures i386 $sudo dpkg –add-architecture itest386 $dpkg –print-foreign-architectures i386 itest386 $dpkg –remove-architecture itest386 dpkg: error: unable to create new file ‘/var/lib/dpkg/arch-new’: Permission denied $sudo dpkg –remove-architecture itest386 $dpkg …