Shell Programming and Scripting

nawk −−re−interval '$0 ~ /[0-9]{9}/' size

BEGIN {
errcount=0;
RC=0;
print "" > "output"
      }
{

if( $0 ~ /^[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]$/)
        {
        print >>"output";
        }

else if($0 ~ /^[0-9][0-9][0-9][0-9][0-9][0-9]$/)
        {
        print $0 "000" >>"output";
        }
else {
      errcount++;
     }
}

END {
if(errcount!=0)
RC=1;
exit RC;
    }

#!/bin/sh

nawk −−re−interval 'BEGIN {..}
}
.
.
.
}
END{...}
' size

/usr/xpg4/bin/awk  '/^[0-9]{9}/ && !/^[0-9]{10}/' file