Connect 1,2 and 3 to a popular unix tool and tell us who is missing.

1. 2. 3.

Cracked by: madhur , Dibyo , bs , duriel , piezocake , Tathagata Chatterjee , BiGFooT , shashank and udupendra.

madhur, Dibyo, bs, duriel, piezocake, Tathagata Chatterjee, BiGFooT, shashank and udupendra