TY  - BOOK
AU  - Ashley, Ruth
AU  - Frnandez, Judi N.
TI  - Teach yourself UNIX
U1  - 001.6421 
PY  - 1990///
CY  - New Delhi
PB  - BPB
KW  - Unix Directories and files
KW  - Unix Security and Access
KW  - Programming the C Shell
ER  -