Change default editor in Debian
# update-alternatives --config editor` There are 7 alternatives which provide \`editor`. Selection Alternative 1 /bin/ed + 2 /bin/nano 3 /usr/bin/vim.tiny * 4 /usr/bin/vim.basic 5 /usr/bin/nedit 6 /usr/bin/emacs21 7 /usr/bin/xemacs21 Press enter to keep the default[*], or type selection number: 6