1*9a7741deSElliott HughesBEGIN { FS = ":" } 2*9a7741deSElliott Hughes{ if (a) print "a", a 3*9a7741deSElliott Hughes if (b == 0) print "b", b 4*9a7741deSElliott Hughes if ( c == "0") print "c", c 5*9a7741deSElliott Hughes if (d == "") print "d", d 6*9a7741deSElliott Hughes if (e == 1-1) print "e", e 7*9a7741deSElliott Hughes} 8*9a7741deSElliott Hughes$1 == 0 {print "$1 = 0"} 9*9a7741deSElliott Hughes$1 == "0" {print "$1 = quoted 0"} 10*9a7741deSElliott Hughes$1 == "" {print "$1 = null string"} 11*9a7741deSElliott Hughes$5 == 0 {print "$5 = 0"} 12*9a7741deSElliott Hughes$5 == "0" {print "$5 = quoted 0"} 13*9a7741deSElliott Hughes$5 == "" {print "$5 = null string"} 14*9a7741deSElliott Hughes$1 == $3 {print "$1 = $3"} 15*9a7741deSElliott Hughes$5 == $6 {print "$5 = $6"} 16