The various kinds of syslog output.

A syslog logger

Creates a syslog logger.

create tag ?path ?with_pid facility opens the socket or the file path and returns a syslog logger. Messages logged through this logger with syslog are prepended with tag and send to facility.

• path default value is, if exists, in this order: "dev/log", "/var/run/syslog", ""

• If with_pid is true (the default false), include the caller's PID in each message.

format_message ?max_buflen logger level message formats the given message depending on logger and level

• max_buflen is the maximum length of the complete message after which text is replaced by .... Default to 1024 due to original standard.

syslog ?max_buflen logger level message formats message (using format_msg) and sends the result to the logger file descriptor with the appropriate level.

close logger closes the logger's file-descriptor. The logger cannot be used after a call to this function. A call to syslog logger ... would result in a raised exception of kind Unix.Unix_error.