vagrant@lucid64:~$ initdb
The files belonging to this database system will be owned by user "vagrant".
This user must also own the server process.

The database cluster will be initialized with locales
  COLLATE:  en_US.UTF-8
  CTYPE:    en_US.UTF-8
  MESSAGES: en_US.UTF-8
  MONETARY: en_US
  NUMERIC:  en_US
  TIME:     en_US
The default database encoding has accordingly been set to UTF8.
The default text search configuration will be set to "english".

fixing permissions on existing directory /vagrant_db/data ... ok
creating subdirectories ... ok
selecting default max_connections ... 100
selecting default shared_buffers ... 24MB
creating configuration files ... ok
creating template1 database in /vagrant_db/data/base/1 ... FATAL:  could not open file "pg_xlog/000000010000000000000000" (log file 0, segment 0): No such file or directory
child process exited with exit code 1
initdb: removing contents of data directory "/vagrant_db/data"