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#/etc/init.d/postgresql start                                                                               <runinfo missing>
Starting PostgreSQL database server: postmaster(FAILED)
ERROR: ERROR: PostgreSQL postmaster did not start because of an unknown reason.
PostgreSQL's init script (/etc/init.d/postgresql) attempted
to start the postmaster, however, this failed because of an unknown
reason.

This should not happen and is a serious problem. Please examine the
situation (please take a look at the log files). If you know the
reason why it failed and, then please file a bug report to Debian
(unless the reason is something obvious like a full disk).

Debian PostgreSQL