LOGGER(1) LOGGER(1) logger - logger [] logger . ' , . , -f, . -d, --udp (UDP). , ' syslog, /etc/services, 514. ' --server --socket. -e, --skip-empty . , - . , , . , --prio-prefix, . , , ( <13>). -f, --file . . -i PID . --id[=] PID logger . ' , PID logger. , , --id=$$ (PPID). , (, systemd /dev/log) PID, . logger(1) , root, PID , , . --journald[=] systemd. , . , . , journald. . systemd.journal-fields(7), . , MESSAGE_ID, . : logger --journald <, --journald , . , PRIORITY. journalctl(1) MESSAGE. journalctl --output json-pretty . MESSAGE , MESSAGE . , , . --msgid - MSGID RFC 5424 . , - . , --rfc5424. --rfc5424 , . -n, --server syslog, . --udp --tcp, logger UDP, , ' TCP. --no-act , ' . --stderr . --octet-count RFC 6587 . , UDP RFC6587 ( ) TCP. -P, --port . , syslog ' udp syslog-conn ' tcp. -p, --priority . .. , -p local3.info local3. user.notice. --prio-prefix syslog , . , . 8 . , local0.info , =16 =6, <134>. , , -p. , , , -p. . --rfc3164 syslog BSD RFC 3164 . --rfc5424[=] syslog RFC 5424 . ' : notq, notime, nohost. notq . , , . , --sd-id timeQuality. notime ( notq) ISO-8601, . nohost gethostname(2) . RFC 5424 logger, 2.26. -s, --stderr , . --sd-id [@] RFC 5424. --sd-param . . ( @) . . @ ' . logger timeQuality. RFC 5424 origin ( ip, enterpriseId, software swVersion) meta ( sequenceId, sysUpTime language). @. --sd-param = , -. --sd-id, . , , . logger --rfc5424 --sd-id zoo@123 \ --sd-param tiger="" \ --sd-param zebra="" \ --sd-id manager@123 \ --sd-param onMeeting="yes" \ " " : <13>1 2015-10-01T14:07:59.168662+02:00 ws kzak - - [timeQuality tzKnown="1" isSynced="1" syncAccuracy="218616"][zoo@123 tiger="" zebra=""][manager@123 onMeeting="yes"] -S, --size . 1 , , RFC 3164. RFC 5424 . , RFC 5424 , 4 . , 1 , - syslog. , --size logger ( , --rfc5424). : , syslog. . , 50 80 . , , . , , , . --socket-errors ' Unix. : on, off auto. auto ( ), logger , systemd(1), , /dev/log . /dev/log , openlog(3). logger(1) 2.26 openlog(3), , , Unix. auto. , , logger(1). -T, --tcp (TCP). , ' syslog-conn, /etc/services, 601. ' --server --socket. -t, --tag , , . ' , ( ' , ). -u, --socket . -- . (-). -h, --help . -V, --version . logger 0 >0, . : auth authpriv cron daemon ftp kern , user lpr mail news syslog user uucp local0 to local7 security auth : emerg alert crit err warning notice info debug panic emerg error err warn warning syslog(3). logger IEEE 1003.2 ("POSIX.2"). logger System rebooted logger -p local0.notice -t HOSTIDM -f /dev/idmc logger -n loghost.example.com System rebooted logger 1983-1993 , Karel Zak , Rainer Gerhards Sami Kerola . journalctl(1), syslog(3), systemd.journal-fields(7) logger util-linux, Linux . util-linux 2.41 2025-03-29 LOGGER(1)