logger: add page

pages/linux/logger.md

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+# logger
+
+> Add messages to syslog.
+
+- Log a message to syslog:
+
+`logger {{message}}`
+
+- Take input from stdin and log to syslog:
+
+`tail -f {{app.log}} | logger`
+
+- Send the output to a remote syslog server running at a given port. Default port is `syslog`:
+
+`tail -f {{app.log}} | logger --server {{hostname}} --port {{port}}`
+
+- Use a specific tag for every line logged. Default is the name of logged in user:
+
+`tail -f {{app.log}} | logger --tag {{tag}}`
+
+- Log messages with a given priority. Default is `user.notice`. See `man logger` for all priority options:
+
+`tail -f {{app.log}} | logger --priority {{user.warning}}`

pages/osx/logger.md

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+# logger
+
+> Add messages to syslog.
+
+- Log a message to syslog:
+
+`logger {{message}}`
+
+- Take input from stdin and log to syslog:
+
+`tail -f {{app.log}} | logger`
+
+- Send the output to a remote syslog server running at a given port. Default port is `syslog`:
+
+`tail -f {{app.log}} | logger -h {{hostname}} -P {{port}}`
+
+- Use a specific tag for every line logged. Default is the name of logged in user:
+
+`tail -f {{app.log}} | logger -t {{tag}}`
+
+- Log messages with a given priority. Default is `user.notice`. See `man logger` for all priority options:
+
+`tail -f {{app.log}} | logger -p {{user.warning}}`