For deleting an user: userdel -r baduser
FOr desactivating only: http://www.linux-france.org/article/sys/lame/html/x788.html

Instant server wich last 35 min <- need to automate this

command:
echo LANG=en_US.UTF-8 >> /etc/locale.conf
echo LC_ALL=en_US.UTF-8 >> /etc/locale.conf
export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_ALL=en_US.UTF-8
locale-gen en_US en_US.UTF-8
locale-gen fr_FR.utf8
dpkg-reconfigure locales

Pretty funnny

ram compression utilitie

call original func within a preloaded func

sudo adduser --system --no-create-home --disabled-login --disabled-password --group goblin

En les mettant après le script

power management

Faire du reverse ssh
http://tuxicoman.jesuislibre.net/2015/03/aide-a-une-noob-par-reverse-ssh.html

Type it yourself !

Sécuriser un serveur web d'attaque ddos etc

See useful graph of output from unix perf tools