Hi Charles, it appears that under some circumstances the sudo command is not available on a fresh Debian installation. I found this blog post that might be helpful in solving this: https://chewett.co.uk/blog/477/sudo-command-not-found-debian-fixed/ I've also found this, which might explain the situation a bit more: "As of DebianSqueeze <https://wiki.debian.org/DebianSqueeze>, if you give root an empty password during installation, sudo will be installed and the first user will be able to use it to gain root access (currently, the user will be added to the *sudo* group). The system will also configure gksu and aptitude to use sudo. You should still verify group membership <https://wiki.debian.org/sudo#Verifying_sudo_membership> after logging in as the installed user." (https://wiki.debian.org/sudo) Hope it helps, Katrin On 02.06.19 15:41, Charles Kelley wrote:

Hello, all

I am new to both Linux and Koha. I readily admit so. After several failed attempts to install Debian Linux on VirtualBox for Mac, I finally succeeded. Now I have trouble in installing Koha on the Debian VirtualBox. It fails at the first instruction in the Koha-Community instructions.

When I open terminal and type this instruction

$ wget -q -O- https://debian.koha-community.org/koha/gpg.asc | sudo apt-key add -

terminal reports

bash: sudo: command not found

When I type this instruction

$ wget -q -O- http://debian.koha-community.org/koha/gpg.asc | sudo apt-key add -

terminal reports

base: sudo: command not found

I have even tried a variant from Joel Hertel's installation guide from a few years ago, to wit:

$ su $ wget -q -O- http://debian.koha-community.org/koha/gpg.asc | apt-key add -

What am I doing wrong?