TY  - BOOK
AU  - Kernighan, Brian, W Pike, Rob 
TI  - Unix programming environment 
SN  - 81-203-0499-3 
U1  - 005.43 KER  
PY  - 2001///
CY  - Prentice hall of india 
PB  - New Delhi 
KW  - Operating systems
ER  -