Update cheatsheets

linux/trace-cmd

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+---
+syntax: markdown
+tags: [tldr, linux]
+source: https://github.com/tldr-pages/tldr.git
+---
+# trace-cmd
+
+> Utility to interact with the Ftrace Linux kernel internal tracer.
+> This utility only runs as root.
+> More information: <https://manned.org/trace-cmd>.
+
+- Display the status of tracing system:
+
+`trace-cmd stat`
+
+- List available tracers:
+
+`trace-cmd list -t`
+
+- Start tracing with a specific plugin:
+
+`trace-cmd start -p {{timerlat|osnoise|hwlat|blk|mmiotrace|function_graph|wakeup_dl|wakeup_rt|wakeup|function|nop}}`
+
+- View the trace output:
+
+`trace-cmd show`
+
+- Stop the tracing but retain the buffers:
+
+`trace-cmd stop`
+
+- Clear the trace buffers:
+
+`trace-cmd clear`
+
+- Clear the trace buffers and stop tracing:
+
+`trace-cmd reset`