awk question

I can match variable $1 and $2 as follow
awk -F, '{if($1 ~ /'$cust'/ && $2 ~ /'$os'/) print $1, $2, $3}'

but if I want to do as bellow it is not working
awk -F, '{if($1=$cust && $2=$os) print $1, $2, $3}'

I want to use if $1 equal to my customer name
&&
$2 equal linux

what I need to do

The = should be ==.
= is for assigning (a=100, a=$X)
== is for comparison.

Hope this helps.

Ok I foud out this is how it works
awk -F, '{if($1="'$cust'" && $2="'$os'") print $1, $2, $3}'