http://owlzyj4to3l5daq6edgsgp5z4lh4tzlnms4z6jv6xdtkily77j4b3byd.onion/advanced-guides/adding-bridges-manually.html
Also, you may use a different text editor, such as vim, to edit the torrc file. However, if you are using Whonix, it is advised NOT to install programs in the gateway vm. Step three: Paste in the following text at the bottom: UseBridges 1 ClientTransportPlugin obfs3,obfs4 exec /usr/bin/obfs4proxy If obfs4proxy is not installed: sudo apt install obfs4proxy Step four: Paste your bridge lines below that.