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(libc.info)Services in the NSS configuration


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Services in the NSS configuration File
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   The above example file mentions four different services: `files',
`db', `nis', and `nisplus'.  This does not mean these services are
available on all sites and it does also not mean these are all the
services which will ever be available.

   In fact, these names are simply strings which the NSS code uses to
find the implicitly addressed functions.  The internal interface will be
described later.  Visible to the user are the modules which implement an
individual service.

   Assume the service NAME shall be used for a lookup.  The code for
this service is implemented in a module called `libnss_NAME'.  On a
system supporting shared libraries this is in fact a shared library
with the name (for example) `libnss_NAME.so.2'.  The number at the end
is the currently used version of the interface which will not change
frequently.  Normally the user should not have to be cognizant of these
files since they should be placed in a directory where they are found
automatically.  Only the names of all available services are important.


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