M.4. pg_receivexlog renamed to pg_receivewal
  PostgreSQL 9.6 and below provided a command named
  
   pg_receivexlog
  
  
  
  to fetch write-ahead-log (WAL) files.  This command was renamed to
  
   pg_receivewal
  
  , see
  
   
    pg_receivewal
   
  
  for documentation of
  
   pg_receivewal
  
  and see
  
   the release notes for PostgreSQL 10
  
  for details
    on this change.