#!/bin/bash

seq 380500000001 380509999999 > numbers.txt
 
sed -i -e 's/38050/+38050/g' numbers.txt
 
split -l 50000 numbers.txt splitted
 
for input in splitted*; do
    awk '{ printf( "BEGIN:VCARD\nVERSION:2.1\nN:;%s\nFN:%s\nTEL;HOME;VOICE:%s\nREV:20121206T114903Z\nEND:VCARD\n\n" , $1 , $1 , $1 ) }' "$input" > 
vcard_"$input".vcf
done
 
rm splitted*
 
rm numbers.txt