Shell Programming and Scripting

1	yes
2	no
3	yes
4	yes

a	no
b	no
c	yes
d	no

1	yes	a	no
2	no	b	no
3	yes	c	yes
4	yes	d	no

1	yes	a	no	no match
2	no	b	no	match
3	yes	c	yes	match
4	yes	d	no	no match

$ awk '$2 == $4 {print $0 "\tmatch"; next} {print $0 "\tno match"}' infile
1       yes     a       no      no match
2       no      b       no      match
3       yes     c       yes     match
4       yes     d       no      no match

awk '{print $0, "\t"($2==$4?"":"no ") "match"}' file3