问题
I wanted to trace the system calls made by the find command to debug some performance issues however I could not figure out how to do this on Mac OS X Yosemite. How can I trace system calls for an arbitrary program similarly to what strace does on FreeBSD? I am especially interested in tracing file-system related calls.
回答1:
You can use dtruss like in
sudo dtruss find ~/repo -depth 2 -type d -name '.git'
The manual page of that utility will help you to tailor the use of the tool to your needs.
回答2:
Under current versions of macOS, executables under paths covered by SIP (like /usr/bin) cannot be traced.
You can bypass this by making a copy of the executable in your home directory and tracing the copy:
cp /usr/bin/find find
sudo dtruss ./find …
来源：https://stackoverflow.com/questions/31045575/how-to-trace-system-calls-of-a-program-in-mac-os-x