Update cheatsheets

linux/setserial

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# setserial
+
+> Read and modify serial port information.
+> More information: <https://manned.org/setserial>.
+
+- Print all information about a specific serial device:
+
+`setserial -a {{/dev/cuaN}}`
+
+- Print the configuration summary of a specific serial device (useful for printing during bootup process):
+
+`setserial -b {{device}}`
+
+- Set a specific configuration parameter to a device:
+
+`sudo setserial {{device}} {{parameter}}`
+
+- Print the configuration of a list of devices:
+
+`setserial -g {{device1 device2 ...}}`