try installing p7zip from the repo's (it's commandline only I think).
- [Trisquel-users] How unpack RAR v5 in Trisquel 7? damaddin
- Re: [Trisquel-users] How unpack RAR v5 in Trisquel 7? mjmhogg5
- Re: [Trisquel-users] How unpack RAR v5 in Trisquel 7? jason