awk question

aoussenko · #1 (**permalink**) 06-11-2009

Hi
I have the following command:
grep -w ${PX} fmembit_3.dta | awk '{print $2}'

The problem is that every time I need to print a different field. The value of the field is stored in variable FIELD:
FIELD=2

Is there a way to make awk use ${FIELD} instead of $2 ?

May be somebody knows the way arond it. Thanks a lot -A

vgersh99 · #2 (**permalink**) 06-11-2009

Code:

awk -v f="${FIELD}" '{ print $f }'
OR
awk '{ print $f }' f="${FIELD}"

rakeshawasthi · #3 (**permalink**) 06-11-2009

Code:

awk -v a=$FIELD '{print a}'

vgersh99 · #4 (**permalink**) 06-11-2009

Quote:

Originally Posted by rakeshawasthi

Code:

awk -v a=$FIELD '{print a}'

Code:

awk -v a=$FIELD '{print $a}'

aoussenko · #5 (**permalink**) 06-11-2009

Thanks a lot

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