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GNU networking utilities

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12.1 Invoking

The options are as follows :

`-i'
Log the process ID of the logger process with each line.

`-s'
Log the message to standard error, as well as the system log. This option might not be supported on all systems.

`-f FILE'
`--file=FILE'
Log the content of the specified file.

`-p PRIORITY'
`--priority=PRIORITY'
Enter the message with the specified priority. The priority may be specified numerically or as a `facility.level' pair. For example, `-p local3.info' logs the message at the informational level in the `local3' facility. The default is `user.notice'.

The actual list of supported facilities and levels is system specific.

`-t TAG'
`--tag=TAG'
Mark every line in the log with the specified tag.

The options are followed by the message which should be written to the log. If not specified, and the -f flag is not provided, standard input is logged.

The logger utility exits 0 on success, and >0 if an error occurs.

The following examples illustrate the usage of the logger command.

 
logger System rebooted

logger -p local0.notice -t HOSTIDM -f /dev/idmc

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