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10.5: Exploring OS X with dtrace
Authored by: kaih on Oct 31, '07 02:02:05PM

No, they're subtly different.

lsof will take a "snapshot" and give you a one-time view of all file handles (and this includes things like TCP ports) that are open at the instant the program was run.

using dtrace, you will see file system activity in realtime - it's more similar to:

sudo fs_usage | grep -i open


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