I'm unable to install Firefox in Kali Linux 2.0. Please guide me through this. I get this error message:
gpg: "–keyserver" not a key ID: skipping
gpg: "keyserver.ubuntu.com" not a key ID: skipping
gpg: no keyserver known (use option --keyserver)
gpg: keyserver receive failed: bad URI
Note it says "use option --keyserver", and it looks like you used –keyserver; you're missing a dash/hyphen, so it's screwing up your entire command.
Actually, looking closer at your screenshot and your example log entries, it looks like you actually used an "en dash" (or perhaps an "em dash") instead of a hyphen:
My guess would be that you've copied and pasted that command from someplace, and something along the way 'autocorrected' the double-dash to the en dash.
The correct commands are as follows:
apt-get remove iceweasel
echo -e "\ndeb http://downloads.sourceforge.net/project/ubuntuzilla/mozilla/apt all main" | tee -a /etc/apt/sources.list > /dev/null
apt-key adv --recv-keys --keyserver keyserver.ubuntu.com C1289A29
apt-get update
apt-get install firefox-mozilla-build
