[Trisquel-users] Re : dpkg error when installing packages

[magicbanana]

Since you write you are a "linux noob" (by the way, you certainly mean  
"GNU/Linux noob": https://www.gnu.org/gnu/linux-and-gnu.html), here is the  
actual command to remove the file:
$ sudo rm /etc/dpkg/dpkg.cfg.d/multiarch
It is to be executed from a "terminal".