7 releases

0.2.1 Jan 3, 2022
0.2.0 Nov 6, 2021
0.1.4 Nov 4, 2021
0.1.3 Feb 9, 2021
0.1.2 Jan 31, 2021

#858 in Text processing

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Unlicense OR MIT OR Apache-2.0

1.5K SLoC

crate documentation


Like strace, but lists files the program accesses. Inspired by tracefile.

This tool's primary purpose is to assist in discovering which files/directories a program accesses during its lifetime. It works by making use of strace and parsing its output to find out which files and folders were accessed.

It supports various options, such as filtering based on file type (file, directory, symlink, pipe, socket, executable, etc).


See what files ls accesses during a normal run:

ftrace -- ls

See all executable files:

ftrace --type f --type x -- ls

See all paths that the program tried to access (even ones that didn't exist). This is sometimes useful to understand a search algorithm that a program uses to find linked libraries, etc.

ftrace --non-existent -- ls

Attach to an already running process (note that this requires elevated privileges):

ftrace --pid 1729


Since strace outputs via STDERR, if the program being run also emits output over STDERR it can confuse ftrace. For this reason any line that ftrace doesn't recognise is ignored and not parsed. You can print lines that weren't recognised with the --invalid flag.


First and foremost, make sure you've installed strace on your system. It's almost always in your distribution's package manager.

Precompiled binaries

Coming Soon! (GitHub actions is yet to be configured for this repository.)

Via Cargo

NOTE: The minimum Rust version required is 1.46.0.

cargo install ftrace

From Source (via Cargo)

NOTE: The minimum Rust version required is 1.46.0.

git clone https://github.com/acheronfail/ftrace/
cd ftrace
cargo install --path .

License: Unlicense OR MIT OR Apache-2.0


~243K SLoC