Shell Programming and Scripting

awk ' NF!=n+1 {print "Record",NR,"has",NF-1,"[~] :",$0}' FS="~" n=$2 $1

#!/bin/sh
awk -v num=20 'BEGIN { FS = "" }
{
       for ( i=0;i<=NF;i++) { 
          if ($i == "~")  c++
       }
       if ( c == num ) { print "Record: " NR , $0 ;} 
       else { print "NO" }
       c = 0
} ' "file"

#!/usr/bin/python
for line in open("file"):
	if line.count("~") == 20:
		print line

awk 'NF!=n{print "Record",NR,"has",NF-1,"[~] :",$0} END { print " Files Not Valid " ,exit 1}' FS="~" n=$2 $1

 count_Tilde.sh input_file.dat $columns
err_code = $?

awk -F"~" ' NF!=n+1 {exit 1}' n=$2 $1