Linux Easter Egg - Hidden Dates in the Linux Kernel

In order to prevent the reboot() system call being
called inadvertently, you must pass it a pair of magic values in the first two parameters. The first magic value is 0xfee1dead. The second magic value
is one of:

$ grep LINUX_REBOOT_MAGIC include/linux/*.h
include/linux/reboot.h:#define LINUX_REBOOT_MAGIC1 0xfee1dead
include/linux/reboot.h:#define LINUX_REBOOT_MAGIC2 672274793
include/linux/reboot.h:#define LINUX_REBOOT_MAGIC2A 85072278
include/linux/reboot.h:#define LINUX_REBOOT_MAGIC2B 369367448
include/linux/reboot.h:#define LINUX_REBOOT_MAGIC2C 537993216

These are dates of significance to Linus; hint
you can use perl to convert them into dates:

$ perl -e 'print localtime(672274793). "\n";'
Sun Apr 21 18:59:53 1991

This is the date that Linus first started writing Linux. The significance of other dates is left as an exercise for the reader ;-)

User Rating:
  6.8/10 with 26 votes
Contributed By: Anonymous on 06-04-2005
Reviewed By: sars, David Wolf
Special Requirements: copy of the Linux source, grep, perl
Please correct this Egg if you see errors.

Pictures and Videos

on openSUSE 10.2 by systemz89
on openSUSE 10.2 by systemz89

Do you have another one? Send us a picture or video of this Egg!


jimee writes:
These numbers are not timestamps in seconds since epoch. You have to convert them in hexadecimal to read a DDMMYYYY: $ printf "%x\n" 672274793 28121969 28/12/1969 is Linus' birthdate.
19 of 31 people found this comment helpful. Did you? Yes No
koira writes:
I figured them out, but I won't tell. It is a neat exercise, and I learned a new command line command, printf. I figured I would give a hint. The second date is not May 12, 1996. I looked for about 15 mins before I figured it out. Even wikipedia has nothing for May 12, 1996. When you convert 85072278 to hex, you get a number starting with 5. Add a 0 to the beginning of that number. This is a pretty cool easter egg. I had fun.
19 of 31 people found this comment helpful. Did you? Yes No
d1337r writes:
koira, it is in European format (DD/MM/YYYY), not in American one. So it is not May 12, 1996, but December 5, 1996 :-)
19 of 31 people found this comment helpful. Did you? Yes No
jsantos writes:
Here are the answers. 0x672274793=28121969 28/12/1969 is when Linus Torvalds was born. These are Linus' daughters' birthdays: 0x85072278=5121996 5/12/1996 is when Patricia Miranda was born. 0x367369448=16041998 16/04/1998 is when Daniela Yolanda was born. 0x537993216=20122000 20/12/2000 is when Celeste Amanda was born.
19 of 31 people found this comment helpful. Did you? Yes No

Register - Privacy Policy - About Us - Contact Us