logger

logger

The logger command in Linux is used to write messages to the system log. The system log is a file that records all events that happen on the system, such as startup, shutdown, and errors.

The syntax for the logger command is as follows:

logger [options] message

The message argument is the message that you want to write to the system log.

The options argument can be used to control the behavior of the logger command.

Here are some of the most useful logger options:

• -p: Specify the priority of the message.

• -t: Specify the tag of the message.

• -f: Specify the file to write the message to.

• -i: Interactive mode.

Here is an example of how to write a message to the system log with the priority of INFO:

logger -p INFO "This is an informational message."

This command will write the message "This is an informational message." to the system log with the priority of INFO.

Here is an example of how to write a message to the file mylogfile with the tag of mytag:

logger -t mytag -f mylogfile "This is a message with a tag."

This command will write the message "This is a message with a tag." to the file mylogfile with the tag of mytag.

The logger command is a useful tool for recording events that happen on the system. It can be used to troubleshoot problems, or to simply keep track of what is happening on the system.

Here are some of the benefits of using the logger command:

• It can be used to troubleshoot problems.

• It can be used to keep track of what is happening on the system.

• It can be used to notify administrators of important events.

• It can be used to collect data for analysis.

If you are working on a system that needs to be monitored, you should make sure to learn how to use the logger command. It is a valuable tool for recording events and for troubleshooting problems.

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