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From: "xsun" <xu2002261@163.com>
X-Newsgroups: pgsql.admin
Subject: The function of lock file named ".s.PGSQL.<port>.lock" on Linux?
Date: Tue, 3 Aug 2010 22:39:29 +0800
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When the psql server is started under Linux platform, in /tmp directory 
there is a lock files named ".s.PGSQL.<port>.lock". So I want to know what 
is the function of this lock file? And does the server work well without 
this lock file?

Additionally, I know that the file ".s.PGSQL.<port>" is used as the unix 
domain socket file. But the file ".s.PGSQL.<port>.lock" makes me still 
pazzled. Could you explain that? Thanks.


Best wishes.