Shell Programming and Scripting

awk  -vx=$deldate90 -vy=$deldate60 -vz=$unixdate ' 
        {ins = $4 $5 $6 
         expdate = $4 $5 $6 
                { if ( ins != "20010101" ) 
                     { if ( expdate < z ) 
                          {if ( expdate < x )
                              print $1","$2","$3"," $5"."$6"."$4",O"  > ("St"); 
                           if ( expdate >= x )
                              { if (expdate < y)
                                   print $1","$2","$3"," $5"."$6"."$4",D" > ("De")
                                if ( expdate >= y )  
                                   print $1","$2","$3"," $5"."$6"."$4",N" > ("In")}}
                       if ( expdate >= z && $4 != 2030) 
                           print $1","$2","$3"," $5"."$6"."$4",A" > ("Ak")}}} ' myfile

nawk -v x=$deldate90 -v w=$deldate60 -v z=$unixdate ' 
{

                expdate = $4 $5 $6
                
                if (expdate < z)
                {
                        
                        if (expdate < x)
                        {
                                print $1","$2","$3"," $5"."$6"."$4",O"  > ("/path/to/some/St")
                        }
                        else if (expdate >= x)
                        {
                                        if (expdate < w)
                                                {
                                                        print $1","$2","$3"," $5"."$6"."$4",D" > ("/path/to/some/De")
                                                }
                                        else
                                                {
                                                        print $1","$2","$3"," $5"."$6"."$4",N" > ("/path/to/some/In")
                                                }
                        }
                
                
                }
                                        
                else if (expdate >= z && $4 != 2030)
                {
                                                        print $1","$2","$3"," $5"."$6"."$4",A" > ("/path/to/some/Ak")
                }


}' myfile