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5.2 Use of syslog(3)

Only rarely should error information be directed to the user. Usually, this is to be limited to ``sorry you cannot login now'' type messages. Information concerning errors in the configuration file, /etc/pam.conf, or due to some system failure encountered by the module, should be written to syslog(3) with facility-type LOG_AUTHPRIV.

With a few exceptions, the level of logging is, at the discretion of the module developer. Here is the recommended usage of different logging levels:


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