http://www.cyberciti.biz/tips/linux-limiting-user-process.html
Fork bomb en Python
import os
while True:
os.fork()Voir les limites imposées par le système
import os
os.system('whoami')
os.system('groups')
os.system('ulimit -a')/etc/security/limits.conf
# - core - limits the core file size (KB)
# - data - max data size (KB)
# - fsize - maximum filesize (KB)
# - memlock - max locked-in-memory address space (KB)
# - nofile - max number of open files
# - rss - max resident set size (KB)
# - stack - max stack size (KB)
# - cpu - max CPU time (MIN)
# - nproc - max number of processes
# - as - address space limit (KB)
# - maxlogins - max number of logins for this user
# - maxsyslogins - max number of logins on the system
# - priority - the priority to run user process with
# - locks - max number of file locks the user can hold
# - sigpending - max number of pending signals
# - msgqueue - max memory used by POSIX message queues (bytes)
# - nice - max nice priority allowed to raise to values: [-20, 19]
# - rtprio - max realtime priority
# - chroot - change root to directory (Debian-specific)/etc/init/docker.conf
limit nofile 100 100
limit nproc 20 20