1echo T.system: test system built-in 2 3awk=${awk-../a.out} 4 5rm -f foo 6$awk 'BEGIN { 7 n = system("exit 3") 8 print n 9 exit n+1 10} 11' >foo 12echo $? >>foo 13echo "3 144" >foo1 15diff foo foo1 || echo 'BAD: T.system (1)' 16