syslog:syslog/3

Availability::- use_module(library(syslog)).(can be autoloaded)

[det]syslog(+Priority, +Format, +Args)

Send a formatted message to the system log if system logging is opened using openlog/3. This predicate combined format/3 with syslog/2. If there is no open syslog connection, syslog/3 calls print_message/2.