Shell variable in awk script

rohini_sharma · 02-22-2010, 08:01 AM

I need to export some Varibales in Shell like (KSH )

export CORE=1
export DODDY=0

then I need to call these variables in the awk

#!/bin/awk -f

BEGIN {

if ( $CORE ~ "1" ) {

print "Core is right one "

}

But awk doesnot understand the variables and I am not getting the right results

Can you help me out

Thanks
Rohini

catkin · 02-22-2010, 08:15 AM

Try awk's -v option

irmin · 02-22-2010, 08:17 AM

In awk the environment variables can be accessed through the associative array ENVIRON:

Code:

#!/bin/awk -f

BEGIN {

if ( ENVIRON["CORE"] ~ "1" ) {

print "Core is right one "

}

pixellany · 02-22-2010, 08:32 AM

Quick glance:

The -f flag says to get code from a file, but you have the code inline.

"~" means "ERE match". Why not just use "==" ?