Logger

Linux (util-linux package) and most BSDs including MacOS provide logger command line utility to send messages to syslog, locally or to a remote syslog server. Many languages provide support for writing messages to syslog, such as go: https://godoc.org/github.com/spkg/slog.

Basic Usage

• logger -s "Message"

-s, --stderr Output the message to standard error as well as to the system log.

Activities

1. Log messages to a different file using rsyslog and logger command

See also

• log show in MacOS
• journalctl

• Linux logging, Cisco IOS logging

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Original Source: https://en.wikiversity.org/wiki/Linux_Administration/System_Services/System_Logging/logger