uutils/coreutils

2.6

Adjusted Score

2.6

Raw Score

100%

Time Factor

2026-07-14

Last Push

23.8K

Stars

Rust

Language

275.8K

Lines of Code

884

Files

677

Pattern Hits

2026-07-14

Scan Date

0.00

HC Hit Rate

What These Metrics Mean

Adjusted Score: Primary synthetic code indicator. Raw score normalised per 1,000 lines of code and multiplied by the temporal discount factor. This is the definitive comparative metric — use it to rank repositories by AI authorship density.
Raw Score: The unmodified sum of all severity-weighted, context-multiplied pattern match scores before temporal discounting. Reflects the absolute signal strength independent of when the repository was last active.
Time Factor: The temporal discount multiplier (0–100%) applied to the raw score. Repositories last updated before ChatGPT's launch (Nov 2022) receive a 5% factor. Full signal is only assigned to repositories active in the post-adoption era (Jan 2024+).
Pattern Hits: Total count of individual pattern matches across all files and categories. A high hit count with a low score may indicate a very large codebase with isolated AI snippets; a low count with a high score indicates dense, concentrated AI signatures.
HC Hit Rate: High+Critical pattern hits per file, averaged across the repository. This orthogonal signal catches repositories where a few files are densely packed with high-severity AI tells — a strong indicator even when the normalised score appears moderate due to codebase size.
Lines of Code / Files: Total lines and files analysed. The scanner examines 94 file extensions. These denominators are used to normalise the score, enabling fair comparison between repositories of vastly different sizes.

Score History

This chart maps the temporal evolution of the adjusted synthetic code score across successive scan runs. An upward trajectory indicates ongoing incorporation of AI-generated code or expanding LLM-assisted scaffolding; a stable or declining trajectory may reflect active human refactoring, code removal, or the adoption of stricter authorship policies. The dashed secondary line (right axis) independently tracks total raw pattern hit count, which can diverge from the normalised score when codebase size changes significantly between scans.

Severity Breakdown

Classifies detected patterns by their diagnostic confidence and structural impact. CRITICAL patterns (coefficient 10) represent definitive synthetic signatures — hallucinated imports, explicit LLM attribution metadata — virtually never produced by human authors. HIGH (5) indicates strong structural tells such as cross-file repetition or cross-linguistic idioms. MEDIUM (2) covers recognisable conversational padding and AI-specific vocabulary. LOW (1) captures subtle indicators like tautological comments and generic boilerplate that require density to carry independent signal.

CRITICAL 0HIGH 0MEDIUM 12LOW 665

Directory Score Breakdown

This horizontal bar chart decomposes the repository's raw synthetic code score by top-level directory, allowing you to pinpoint precisely which modules or components carry the highest AI authorship density. Directories with disproportionately high scores relative to their size warrant targeted manual review: concentrated AI signatures often trace back to mass-generated configuration layers, auto-ported test suites, LLM-scaffolded boilerplate classes, or entire subsystems authored under heavy copilot assistance. Use this view to prioritise your human code-review effort.

Pattern Findings

The scanner identified 677 distinct pattern matches across 14 syntactic categories. Each entry below represents a discrete location in the source code where the engine recorded a statistically significant AI authorship indicator. Expand any category row to inspect the individual file paths, line numbers, code snippets, and the lexical context (CODE, COMMENT, or STRING) in which each match was detected.

Reading the findings table: The Severity column indicates the diagnostic confidence level (CRITICAL / HIGH / MEDIUM / LOW). The Context column identifies whether the match occurred inside executable code, an inline comment, or a string literal — comment-context matches receive a ×1.5 weight because LLMs systematically over-annotate. The ⚡ bolt icon marks clustered matches: three or more patterns within a 10-line window, each receiving an additional ×1.5 density multiplier as dense clusters constitute far stronger evidence of synthetic authorship than isolated hits.

Over-Commented Block615 hits · 612 pts

Severity	File	Line	Snippet	Context
LOW	Cargo.toml	21		COMMENT
LOW	util/check-toctou.sh	1	#!/bin/bash	COMMENT
LOW	util/dwr.sh	1	#!/usr/bin/env bash	COMMENT
LOW	util/update-version.sh	1	#!/bin/sh	COMMENT
LOW	util/build-run-test-coverage-linux.sh	1	#!/usr/bin/env bash	COMMENT
LOW	util/android-commands.sh	1	#!/usr/bin/env bash	COMMENT
LOW	util/android-commands.sh	201	# finishes a command run with a summary. It returns with the exit code of the probe if specified as	COMMENT
LOW	util/build-gnu.sh	341	# don't need to replicate that behavior.	COMMENT
LOW	util/GHA-delete-GNU-workflow-logs.sh	1	#!/bin/sh	COMMENT
LOW	tests/test_uudoc.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_env.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_env.rs	1201	}	COMMENT
LOW	tests/by-util/test_env.rs	1221	/// println!("Executing: {}", shell_words::join(args));	COMMENT
LOW	tests/by-util/test_uptime.rs	101		COMMENT
LOW	tests/by-util/test_mv.rs	1881		COMMENT
LOW	tests/by-util/test_tee.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_ls.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_ls.rs	1181	// A line of the output should be:	COMMENT
LOW	tests/by-util/test_ls.rs	1221	.arg("dir")	COMMENT
LOW	tests/by-util/test_ls.rs	1241	// the 1st color is the target color, in a fixed-size array of size 2.	COMMENT
LOW	tests/by-util/test_ls.rs	1261	// ├── ln-file1 -> dir1/file1	COMMENT
LOW	tests/by-util/test_stdbuf.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_cp.rs	3281	} );	COMMENT
LOW	tests/by-util/test_tail.rs	341	.stderr_is("tail: error reading 'standard input': Is a directory\n");	COMMENT
LOW	tests/by-util/test_tail.rs	461		COMMENT
LOW	tests/by-util/test_tail.rs	2461	not(target_os = "openbsd")	COMMENT
LOW	tests/by-util/test_tail.rs	4561	.kill()	COMMENT
LOW	tests/by-util/test_tail.rs	4581	// <	COMMENT
LOW	tests/by-util/test_tail.rs	4641	#[rstest]	COMMENT
LOW	tests/by-util/test_touch.rs	661	#[test]	COMMENT
LOW	tests/by-util/test_sleep.rs	281	.fails()	COMMENT
LOW	tests/by-util/test_eintr_handling.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_mkdir.rs	321	// posix_acl entries are in the form of	COMMENT
LOW	tests/by-util/test_cat.rs	821	child.pipe_in("content");	COMMENT
LOW	tests/by-util/test_id.rs	421	// for now, we print clap's standard response for "conflicts_with" instead of:	COMMENT
LOW	tests/by-util/test_cksum.rs	21	#[case::crc("crc")]	COMMENT
LOW	tests/by-util/test_chown.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_chown.rs	261	.fails()	COMMENT
LOW	tests/by-util/test_chown.rs	501	.stderr_contains("invalid spec");	COMMENT
LOW	tests/by-util/test_tac.rs	161	// FIXME: See https://github.com/uutils/coreutils/issues/4204	COMMENT
LOW	tests/by-util/test_tac.rs	181	// "xx".	COMMENT
LOW	tests/by-util/test_tac.rs	201	// separator, since there are no more characters preceding it.	COMMENT
LOW	tests/by-util/test_tac.rs	361	new_ucmd!()	COMMENT
LOW	tests/by-util/test_seq.rs	1061	// likely not the primary cause, as even double (64-bit) values can differ when compared to	COMMENT
LOW	tests/by-util/test_seq.rs	1081	// GNU `seq` manual states that, when the parameters "all use a fixed point	COMMENT
LOW	tests/by-util/test_seq.rs	1121	// provided numbers "all use a fixed point decimal representation",	COMMENT
LOW	tests/by-util/test_mktemp.rs	541	/// Decide whether a string matches a given template.	COMMENT
LOW	tests/by-util/test_more.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_nice.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/by-util/test_head.rs	561	)]	COMMENT
LOW	tests/by-util/test_head.rs	661	#[test]	COMMENT
LOW	tests/uutests/src/lib/random.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/uutests/src/lib/random.rs	21	/// .sample_iter(AlphanumericNewline)	COMMENT
LOW	tests/uutests/src/lib/random.rs	61	/// use crate::common::random::{AlphanumericNewline, RandomizedString};	COMMENT
LOW	tests/uutests/src/lib/random.rs	101	/// * `dist`: A `u8` [`Distribution`]	COMMENT
LOW	tests/uutests/src/lib/util.rs	1	// This file is part of the uutils coreutils package.	COMMENT
LOW	tests/uutests/src/lib/util.rs	301	}	COMMENT
LOW	tests/uutests/src/lib/util.rs	481	);	COMMENT
LOW	tests/uutests/src/lib/util.rs	501	self.stderr_str()	COMMENT
LOW	tests/uutests/src/lib/util.rs	581	self.stdout_is(String::from_utf8(contents).unwrap())	COMMENT
555 more matches not shown…

AI Slop Vocabulary9 hits · 26 pts

Severity	File	Line	Snippet	Context
LOW	util/test_compare_test_results.py	518	# Instead of assertRaises, just call main() and check its return value	COMMENT
MEDIUM	util/run-gnu-test.sh	38	# --- Self-heal: make the shared GNU harness point at THIS checkout ----------	COMMENT
MEDIUM	util/run-gnu-test.sh	41	# PATH, so the harness can silently run a stale/other build. Re-point the PATH	COMMENT
MEDIUM	util/run-gnu-test.sh	52	# to whatever 'target/*/coreutils' actually exists so the harness adapts to the	COMMENT
MEDIUM	tests/by-util/test_ls.rs	3632	// Essentially the same test as above, but only test symlinks and directories,	COMMENT
MEDIUM	tests/by-util/test_chmod.rs	1470	// Assert on the path only (not the mode bits), so the test is robust to the	COMMENT
MEDIUM	src/uu/md5sum/Cargo.toml	45	# harness = false	COMMENT
MEDIUM	src/uu/checksum_common/Cargo.toml	32	# harness = false	COMMENT
MEDIUM	src/uucore/src/lib/mods/clap_localization.rs	11	//! instead of parsing error strings, providing a more robust solution.	COMMENT

Hyper-Verbose Identifiers19 hits · 20 pts

Severity	File	Line	Snippet	Context
LOW	util/test_compare_size_results.py	28	def test_load_sizes_date_keyed(self):	CODE
LOW	util/test_compare_size_results.py	48	def test_load_sizes_flat_fallback(self):	CODE
LOW	util/test_compare_size_results.py	74	def test_compare_threshold_boundaries(self):	CODE
LOW⚡	util/test_compare_size_results.py	99	def test_compare_added_removed_and_totals(self):	CODE
LOW⚡	util/test_compare_size_results.py	109	def test_compare_sort_and_zero_reference(self):	CODE
LOW⚡	util/test_compare_size_results.py	116	def test_format_report_renders_changes(self):	CODE
LOW	util/test_compare_size_results.py	137	def test_main_writes_only_when_significant(self):	CODE
LOW	util/test_compare_size_results.py	156	def test_main_missing_reference_is_not_fatal(self):	CODE
LOW	util/test_compare_test_results.py	53	def test_log_extension_removal(self):	CODE
LOW	util/test_compare_test_results.py	93	def test_with_comments_and_blanks(self):	CODE
LOW	util/test_compare_test_results.py	213	def test_new_and_removed_tests(self):	CODE
LOW	util/test_compare_test_results.py	249	def test_skip_to_fail_not_regression(self):	CODE
LOW	util/test_compare_test_results.py	315	def test_main_exit_code_with_real_regressions(self):	CODE
LOW	util/test_compare_test_results.py	351	def test_filter_intermittent_fixes(self):	CODE
LOW	util/test_compare_test_results.py	425	def test_console_output_formatting(self, mock_stderr, mock_stdout):	CODE
LOW	util/test_compare_test_results.py	468	def test_file_output_generation(self):	CODE
LOW	util/test_compare_test_results.py	506	def test_exit_code_with_no_regressions(self):	CODE
LOW	util/test_compare_test_results.py	523	def test_exit_code_with_regressions(self):	CODE
LOW	util/test_compare_test_results.py	547	def test_github_actions_formatting(self):	CODE

Redundant / Tautological Comments8 hits · 12 pts

Severity	File	Line	Snippet	Context
LOW	util/compare_gnu_result.py	42	# Check if all failing tests are intermittent based on the environment variable	COMMENT
LOW	util/analyze-gnu-results.py	135	# Check if file arguments were provided	COMMENT
LOW	util/analyze-gnu-results.py	145	# Check if the first argument is an output file (starts with -)	COMMENT
LOW	util/run-gnu-test.sh	133	# Check if the file exists with .sh, .pl extension or without any extension in the $path_GNU directory	COMMENT
LOW	util/build-gnu.sh	81	# Check if all patches are already applied	COMMENT
LOW	.github/workflows/l10n.yml	549	# Check if symlinks exist	COMMENT
LOW	.github/workflows/manpage-lint.yml	69	# Check if manpages were generated	COMMENT
LOW	.github/workflows/manpage-lint.yml	92	# Check if mandoc produced any output (errors only, not style warnings)	COMMENT

Verbosity Indicators4 hits · 8 pts

Severity	File	Line	Snippet	Context
LOW	src/uu/touch/src/touch.rs	502	// we need to check if the path is the path to a directory (ends with a separator)	COMMENT
LOW⚡	src/uu/dirname/src/dirname.rs	49	// Step 1: Strip trailing slashes (but not if the entire path is slashes)	COMMENT
LOW⚡	src/uu/dirname/src/dirname.rs	59	// Step 2: Check if it ends with `/.` and strip the `/+.` pattern	COMMENT
LOW	src/uu/dirname/src/dirname.rs	81	// Step 3: Normal dirname - find last / and remove everything after it	COMMENT

Excessive Try-Catch Wrapping4 hits · 6 pts

Severity	File	Line	Snippet	Context
LOW	util/remaining-gnu-error.py	22	except Exception as e:	CODE
MEDIUM	util/analyze-gnu-results.py	158	print(f"Error: File '{json_files[0]}' not found.", file=sys.stderr)	CODE
LOW	util/gnu-json-result.py	37	except Exception as e:	CODE
MEDIUM	util/gnu-json-result.py	38	print(f"Error processing file {path}: {e}", file=sys.stderr)	CODE

TODO Padding4 hits · 6 pts

Severity	File	Line	Snippet	Context
LOW	tests/by-util/test_tail.rs	4030	// TODO: Add test for the warning `--pid=PID is not supported on this system`	COMMENT
LOW	tests/by-util/test_chown.rs	269	// TODO: implement once output "failed to change" to stdout is fixed	COMMENT
LOW	src/uu/cp/src/cp.rs	768	// TODO: implement the following args	COMMENT
LOW	src/uu/cp/src/cp.rs	2674	// TODO: implement something similar to gnu's lchown	COMMENT

Structural Annotation Overuse3 hits · 6 pts

Severity	File	Line	Snippet	Context
LOW⚡	src/uu/dirname/src/dirname.rs	49	// Step 1: Strip trailing slashes (but not if the entire path is slashes)	COMMENT
LOW⚡	src/uu/dirname/src/dirname.rs	59	// Step 2: Check if it ends with `/.` and strip the `/+.` pattern	COMMENT
LOW	src/uu/dirname/src/dirname.rs	81	// Step 3: Normal dirname - find last / and remove everything after it	COMMENT

Self-Referential Comments1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	util/test_compare_test_results.py	409	# Create an ignore file	COMMENT

Deep Nesting3 hits · 3 pts

Severity	File	Line	Context
LOW	util/analyze-gnu-results.py	49	CODE
LOW	util/compare_test_results.py	44	CODE
LOW	util/run-clippy.py	34	CODE

Decorative Section Separators1 hit · 3 pts

Severity	File	Line	Snippet	Context
MEDIUM	util/run-gnu-test.sh	89	# ---------------------------------------------------------------------------	COMMENT

Fake / Example Data3 hits · 3 pts

Severity	File	Line	Snippet	Context
LOW	tests/by-util/test_mv.rs	2909	fs::write(&dst_path, "placeholder").expect("Failed to write placeholder dst");	CODE
LOW	tests/by-util/test_basenc.rs	289	let input = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. ".repeat(50);	CODE
LOW	tests/by-util/test_basenc.rs	289	let input = "Lorem ipsum dolor sit amet, consectetur adipiscing elit. ".repeat(50);	CODE

Example Usage Blocks2 hits · 3 pts

Severity	File	Line	Snippet	Context
LOW	src/uucore/src/lib/features/update_control.rs	22	//! # Usage example	COMMENT
LOW	src/uucore/src/lib/features/backup_control.rs	35	//! # Usage example	COMMENT

Unused Imports1 hit · 1 pts

Severity	File	Line	Snippet	Context
LOW	util/run-clippy.py	6		CODE

Analysis Overview

What These Metrics Mean

Score History

Severity Breakdown

Directory Score Breakdown

Pattern Findings