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+
+.. _unix:
+
+**********************
+Unix Specific Services
+**********************
+
+The modules described in this chapter provide interfaces to features that are
+unique to the Unix operating system, or in some cases to some or many variants
+of it. Here's an overview:
+
+
+.. toctree::
+
+ posix.rst
+ pwd.rst
+ spwd.rst
+ grp.rst
+ crypt.rst
+ dl.rst
+ termios.rst
+ tty.rst
+ pty.rst
+ fcntl.rst
+ pipes.rst
+ resource.rst
+ nis.rst
+ syslog.rst
+ commands.rst