#!/usr/bin/perl

# http://perlmonks.org/?node_id=1209586

use strict;
use warnings;

local ($/, $\) = ("<SUBEND", "\n");

/SUBEND/ and print "Update Command ",
  join ',', /MSISDN=(\d+)/ ? "<$1>" :'MSISDN=notSet', /C=(\w+)/g
  while <DATA>;

__DATA__
<SUBBEGIN
    MSISDN=123476789678;
    ODBIC=BIC;
    ODBOC=BAOC;
<SUBEND
<SUBBEGIN
    ODBIC=BIC;
    ODBOC=BAOC;
<SUBEND