Shell Programming and Scripting

pattern
tin loop 3 
tin xarg 1
tin jim  5
tin icon 2 
tin tour 4

patn.out
tin loop 3
tin jim  5
tin icon 1 
tin tour 2

while read one two three
do
awk '$2 ~ /'"$two"'/' patn.out || while read four five six
do
awk -v n1=$three -v n2=$six '{BEGIN (n2<n1)?1:0}'
done<patn.out
done<pattern

Output needed for above input:
tin xarg 1            		 ---> xarg i failed in first awk so written in output file
tin icon 2 
tin tour 4

awk 'NR==FNR{A[$2]=$3; next} !($2 in A) || $3>A[$2]' patn.out pattern

awk '
  NR==FNR{                       # When the first file is being read (only then are FNR and NR equal)
    A[$2]=$3                     # create an (associative) element in array A with the second field as the index and the 3rd field as value
    next                         # start reading the next record (line)
  } 
  !($2 in A) || $3>A[$2]         # while reading the second file, if field 2 is not present in array A, OR if it is present, but $3 is more than A[$2] (the previously recorded $3 from path.out for that particular $2) then print the record (line) 
' patn.out pattern               # first read patn.out as the first file and then 'pattern' as the second file