Update cheatsheets

osx/dtrace

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+---
+syntax: markdown
+tags: [tldr, osx]
+source: https://github.com/tldr-pages/tldr.git
+---
+# dtrace
+
+> A simple interface to invoke the D language compiler, retrieve buffered trace, and print traced data from the DTrace kernel facility.
+> Generic front-end to DTrace facility, requiring root privileges.
+> More information: <https://keith.github.io/xcode-man-pages/dtrace.1.html>.
+
+- Set target data model for a specific architecture:
+
+`dtrace -arch {{arch_name}}`
+
+- Claim [a]nonymous tracing state and display the traced data:
+
+`dtrace -a`
+
+- Set principal trace buffer size. Supported units are `k`, `m`, `g`, or `t`:
+
+`dtrace -b {{2g}}`
+
+- Compile the specified D Program [s]ource file:
+
+`dtrace -s {{D_script}}`
+
+- Run the specified [c]ommand and exit upon its completion:
+
+`dtrace -c {{command}}`
+
+- Specify [f]unction name to trace or list (-l option). The corresponding argument can include any of the probe description forms like `provider:module:function`, `module:function` or `function`:
+
+`dtrace -f {{function}}`
+
+- Grad the specified [p]rocess ID, cache its symbol table, and exit upon completion:
+
+`dtrace -p {{pid}}`
+
+- Combine different options for tracing function in a process:
+
+`dtrace -a -b {{buffer_size}} -f {{function}} -p {{pid}}`