with a debian linux host (OVH pro)
when I run apt-get install supervisor
I get
E: Could not open lock file /var/lib/dpkg/lock - open (13 Permission denied)
E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
and also when I run su it asks a password that doesn't seem to be the same as my ftp and I get (authentication failed) how can I solve that ? please