Ubuntu install

Create an ssh key for your github account:

  ssh-keygen -t ed25519 -C [YOUR-GIT@EMAIL.COM]

Check that your ssh agent is running (will output an ID)

  eval "$(ssh-agent -s)"

show your ssh folder:

ls -al ~/.ssh

Add  the ed25519 ssh key:

ssh-add ~/.ssh/id_ed25519

show assigned ssh keys (i think?):

ssh-add -l -E sha256

Close and reopen the terminal

set myself as root "super user" [ctrl + d to exit]:

sudo -s 

Add some php extensions:

sudo apt install php8.1-{bz2,curl,intl,xml}