Update cheatsheets

linux/radeontop

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# radeontop
+
+> Show utilization of AMD GPUs.
+> May require root privileges depending on your system.
+> More information: <https://github.com/clbr/radeontop>.
+
+- Show the utilization of the default AMD GPU:
+
+`radeontop`
+
+- Enable colored output:
+
+`radeontop --color`
+
+- Select a specific GPU (the bus number is the first number in the output of `lspci`):
+
+`radeontop --bus {{bus_number}}`
+
+- Specify the display refresh rate (higher means more GPU overhead):
+
+`radeontop --ticks {{samples_per_second}}`