JAEN

macOS

fs_usage

SafeTrace file system calls

sudo fs_usage -w -f filesys <process>

Live-traces a process's file I/O — see exactly which path it touches when it hangs.

Examples

  • sudo fs_usage -w -f filesys FinderWatch Finder's file access

Syntax

sudo fs_usage [-w] [-f filesys|network] [pid|process]

Before you run it

Read only (very chatty).

Related commands

  • straceTrace system calls
  • logQuery unified logs

The same reference, with no signal at all

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