> For the complete documentation index, see [llms.txt](https://blog.log4think.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://blog.log4think.com/trace-a-process.md).

# 2014-03-28  Trace a process

For Linux

```
sudo strace -p PID
```

For Mac

```
sudo dtruss -p PID
```