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The GNU C Library provides functions to submit messages to the Syslog facility:
| • openlog | Open connection to Syslog | |
| • syslog; vsyslog | Submit message to Syslog | |
| • closelog | Close connection to Syslog | |
| • setlogmask | Cause certain messages to be ignored | |
| • 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 Sockets.