logger - Makes entries in the system log
/usr/bin/logger [-f file] [-i] [-p[facility.]priority] [-t
tag] [message...]
logger [-b] [message...]
Interfaces documented on this reference page conform to
industry standards as follows:
logger: XCU5.0
Refer to the standards(5) reference page for more information
about industry standards and associated tags.
[Tru64 UNIX] Logs the informational message to the binary
event logger instead of the syslog() subroutine and enters
information in the binary event log file. The uerf command
with the -r 250 option reports the informational messages
that are in the binary event log file, which is used
for system maintenance and troubleshooting. The -b option
cannot be used with any other options. [Tru64 UNIX] Logs
all lines in file. [Tru64 UNIX] Logs the process ID
(PID) of the logger process with each line. [Tru64
UNIX] Enters the message with the specified priority and,
if specified, from the specified facility.
[Tru64 UNIX] You can specify priority as either an
alphabetic string or its integer equivalent. You
can specify the following values for the priority
variable: [Tru64 UNIX] (0) [Tru64 UNIX] The system
is unusable. (0) [Tru64 UNIX] Action must be
taken immediately. (1) [Tru64 UNIX] Critical conditions.
(2) [Tru64 UNIX] Error conditions. (3)
[Tru64 UNIX] (3) [Tru64 UNIX] (4) [Tru64
UNIX] Warning conditions. (4) [Tru64 UNIX] Normal
but significant condition. (5) [Tru64
UNIX] Informational. (6) [Tru64 UNIX] Debug-level
messages. (7)
[Tru64 UNIX] You can also specify a value for the
facility variable, which indicates the source of
the event. You can specify facility as either an
alphabetic string or its integer equivalent. The
integer values appear in parentheses. You can
specify the following values for the facility variable:
[Tru64 UNIX] Kernel messages. (0) [Tru64
UNIX] Random user-level messages. (8) [Tru64
UNIX] Mail system. (16) [Tru64 UNIX] System daemons.
(24) [Tru64 UNIX] Security/authorization
messages. (32) [Tru64 UNIX] (32) [Tru64
UNIX] Messages syslogd generates internally. (40)
[Tru64 UNIX] Line printer subsystem. (48) [Tru64
UNIX] Network news subsystem. (56) [Tru64
UNIX] UUCP subsystem. (64) [Tru64 UNIX] Clock
daemon. (72) [Tru64 UNIX] (128) [Tru64
UNIX] (136) [Tru64 UNIX] (144) [Tru64
UNIX] (152) [Tru64 UNIX] (160) [Tru64
UNIX] (168) [Tru64 UNIX] (176) [Tru64
UNIX] (184) [Tru64 UNIX] Precedes each entry in
the log with tag.
You can specify the message to be used for entries on the
command line or with the -f file option, which specifies
that each line in file be logged as an entry. If you do
not specify message or -f, logger reads standard input.
The logger command makes the specified entries in the system
log file.
The logger command provides a program and shell script
interface to the syslog() subroutine. The file in which
entries are made depends on the current system log configuration;
see syslog and syslogd for more information.
The effects of the environment variable LC_MESSAGES apply
only to diagnostic messages generated by logger, and not
to any messages written by the use of the command.
The following exit values are returned: Successful completion.
An error occurred.
To log the system reboot, including the process ID of the
process running logger, enter: logger -i System rebooted
To log each line in the file build.events with the tag
trial build preceding them, enter: logger -f build.events
-t "trial build" The following commands are equivalent and
enter events of warning priority to the log: logger -p
warning
logger -p 4 The following commands are equivalent and
enter events from the daemon facility of warning priority:
logger -p daemon.warning
logger -p 24.4 To specify the debug priority with a priority
name, enter: logger -p debug my message
To specify the debug priority with a priority number,
enter: logger -p 7 my message To specify both
debug priority and the user facility, enter: logger
-p user.debug my message
To specify the same facility/priority pair using
numeric values, enter: logger -p 8.7 my message
You can also combine alphabetic and numeric specifications:
logger -p user.7 my message logger -p
8.debug my message
ENVIRONMENT VARIABLES [Toc] [Back] The following environment variables affect the execution
of logger: Provides a default value for the internationalization
variables that are unset or null. If LANG is unset
or null, the corresponding value from the default locale
is used. If any of the internationalization variables
contain an invalid setting, the utility behaves as if none
of the variables had been defined. If set to a non-empty
string value, overrides the values of all the other internationalization
variables. Determines the locale for the
interpretation of sequences of bytes of text data as characters
(for example, single-byte as opposed to multi-byte
characters in arguments). Determines the locale for the
format and contents of diagnostic messages written to
standard error. Determines the location of message catalogues
for the processing of LC_MESSAGES.
Commands: binlogd(8), syslogd(8), uerf(8)
Functions: syslog(3)
Standards: standards(5)
logger(1)
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