$ cat N 
# just a test
33 22 999 223 
44 55 99
$ ./g-than N 
# just a test
999
223
99
$ ./g-than-sh 100 < N
# just a test
999
223
$ 
      

$ cat IN
233   112 33
# oh!, just a test
# again
333 hi     kk 22 
$ ./sum-fields IN
=378
# oh!, just a test
# again
hikk=355
$ 
      

$ cat IN-num 
klim 233   112 33
# oh!, just a test
# again
milk 333  22 
klim 999 22
oak 222
redcow 1023
oak 11
milk 333  22 
klim 999 22
redcow 1023
sunlun  1000000
oak 11
klim 999 22
oak 222
redcow 1023
oak 11
$ ./sum-vars IN-num 
# oh!, just a test
# again
oak = 477
sunlun = 1000000
milk = 710
klim = 3441
redcow = 3069
$