SHELL

awk or

awk '{
	if ( $2 == "abc" || $2 == "def") {
    	print "blah"
    }
}'

awk or statement

# Basic syntax:
||

# Example usage:
awk '{if ($2=="abc" || $2=="def") print "true"}' input_file
# Where:
#	- this prints true if the second field equals "abc" OR "def"