'/home/jerald/Downloads/mmc_1.6.1_i386.deb' sudo dpkg --force-architecture -i'/home/jerald/Desktop/mmc_1.6.1_i386.deb'

Remove the (') from the beginning and end so it looks like this

/home/jerald/Downloads/mmc_1.6.1_i386.deb' sudo dpkg --force-architecture -i'/home/jerald/Desktop/mmc_1.6.1_i386.deb

that will do the trick