Update cheatsheets

linux/vcgencmd

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# vcgencmd
+
+> Print system information for a Raspberry Pi.
+> More information: <https://www.raspberrypi.org/documentation/computers/os.html#vcgencmd>.
+
+- List all available commands:
+
+`vcgencmd commands`
+
+- Print the current CPU temperature:
+
+`vcgencmd measure_temp`
+
+- Print the current voltage:
+
+`vcgencmd measure_volts`
+
+- Print the throttled state of the system as a bit pattern:
+
+`vcgencmd get_throttled`
+
+- Print the bootloader configuration (only available on Raspberry Pi 4 models):
+
+`vcgencmd bootloader_config`
+
+- Display help:
+
+`vcgencmd --help`