Understanding Unix AWK

Understanding Unix AWK

awk is field-oriented and ideal for manipulating database or comma-delimited files

1. awk '{ print $1 }' address_book
2. awk -F, '{ print $1 }' address_book
3. awk -F, '{ print $1 " " $2 " " $8 }' address_book > address_book.bck
4. awk -F, '/KARAM/{ print $1 " " $2 " " $8 }' address_book > address_book.bck