Update cheatsheets

influx

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+---
+syntax: markdown
+tags: [tldr, common]
+source: https://github.com/tldr-pages/tldr.git
+---
+# influx
+
+> InfluxDB command-line client.
+> More information: <https://docs.influxdata.com/influxdb/v1.7/tools/shell/>.
+
+- Connect to an InfluxDB running on localhost with no credentials:
+
+`influx`
+
+- Connect with a specific username (will prompt for a password):
+
+`influx -username {{username}} -password ""`
+
+- Connect to a specific host:
+
+`influx -host {{hostname}}`
+
+- Use a specific database:
+
+`influx -database {{database_name}}`
+
+- Execute a given command:
+
+`influx -execute "{{influxql_command}}"`
+
+- Return output in a specific format:
+
+`influx -execute "{{influxql_command}}" -format {{json|csv|column}}`