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The GNU C Library

18.2 Submitting Syslog Messages

The GNU C library provides functions to submit messages to the Syslog facility:

18.2.1 openlog		Open connection to Syslog
18.2.2 syslog, vsyslog		Submit message to Syslog
18.2.3 closelog		Close connection to Syslog
18.2.4 setlogmask		Cause certain messages to be ignored
18.2.5 Syslog Example		Example of all of the above

These functions only work to submit messages to the Syslog facility on the same system. To submit a message to the Syslog facility on another system, use the socket I/O functions to write a UDP datagram to the syslog UDP port on that system. See section 16. Sockets.