Through out any of this, did it occur for you to look at the `README.md` file in the directory you cloned?
To build: `go get git.torproject.org/pluggable-transports/obfs4.git/obfs4proxy`
To install: Copy `$GOPATH/bin/obfs4proxy` to a permanent location (Eg: `/usr/local/bin`)
Thx all for your answers (sry for this answer 1 month after...) Rah, I've just understood why I'm having this problem with "permission denied", after copying the folder obfs4proxy cloned from git, in the /usr/bin/obfs4proxy Is it source folder I'm downloading from git ?! So _I've to build obfs4proxy_ with "go" and all others dependencies listed ?! So "go" is a program used to build ?! Ouch, I'm not sure how to find this program in the distribution I'm using (Raspbian) Sry for being noob!!! totally noob ;) But it's nice to learn everyday... Thx ;) -- Petrusko PubKey EBE23AE5 C0BF 2184 4A77 4A18 90E9 F72C B3CA E665 EBE2 3AE5