which <command>   returns nothing.  Maybe it’s alias, so:   type <command>   will tell you what the alias is for.

To make apt-get update work, we simply need to edit /etc/apt/sources.list and update all URLs from security.ubuntu.com and archive.ubuntu.com to point to old-releases.ubuntu.com, as per the following sed command: sudo sed -i.bak -r ‘s/(archive|security).ubuntu.com/old-releases.ubuntu.com/g’ /etc/apt/sources.list After this, sudo apt-get update seems to run without a hitch. Of course if you do this, you’re accepting to […]

When ssh, if you get:   @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY! Someone could be eavesdropping on you right now (man-in-the-middle attack)! It is also possible that a host key has just been changed. The fingerprint for the DSA […]