How and where would linux kernel developers run into this chap:

Hint: Autoraja is going to look for  a specific 8 character string.

Cracked by: Sumanth Patlolla , Dibyo , Manish Achuth , KK , rickde , Rogi , Bipin Banavalikar and Ananth

Answer:
When you clean the kernel source tree, you type ‘make clean’. If you really really want to scrub it clean, you type ‘make mrproper’. The guy in the picture is Mr. Proper (Mr Clean for you Americans)