ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

uucore: safe_traversal TOCTOU protection only enabled on Linux

CVE-2026-35362 / GHSA-w6xc-g9qj-vp32

Details

The safe_traversal module in uutils coreutils, which provides protection against Time-of-Check to Time-of-Use (TOCTOU) symlink races using file-descriptor-relative syscalls, is incorrectly limited to Linux targets. On other Unix-like systems such as macOS and FreeBSD, the utility fails to utilize these protections, leaving directory traversal operations vulnerable to symlink race conditions.

Zellic finding 3.59. Reported in the Zellic uutils coreutils Program Security Assessment (for Canonical, Jan 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242.

Severity

• CVSS Score: 3.6 / 10 (Low)
• Vector String: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

References

• https://github.com/uutils/coreutils/security/advisories/GHSA-w6xc-g9qj-vp32
• https://nvd.nist.gov/vuln/detail/CVE-2026-35362
• https://github.com/uutils/coreutils/pull/9792
• https://github.com/uutils/coreutils/commit/30239e69a328e76d2377f2a0bc02fbde61c34280
• https://github.com/uutils/coreutils/releases/tag/0.6.0
• https://github.com/advisories/GHSA-w6xc-g9qj-vp32

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

uutils coreutils: cp/install/mv/ln --suffix alone does not enable backup mode (silent data loss vs GNU)

GHSA-fqf6-gxhh-2xhw

Details

determine_backup_mode in src/uucore/src/lib/features/backup_control.rs only checks --backup/-b and returns BackupMode::None when only --suffix is given. GNU enables backup mode when --suffix is used alone (defaulting to existing/numbered, or $VERSION_CONTROL). Affects cp, install, mv, ln which share this code.

##### uutils: no backup created
$ coreutils cp --suffix=.bak src dest      # dest.bak NOT created

##### GNU: dest.bak created
$ cp --suffix=.bak src dest

Impact: users/scripts relying on --suffix to back up a file before overwrite get silent data loss; breaks GNU compatibility across four utilities. Recommendation: enable backup mode when --suffix is present.

Note: this is primarily a GNU-compatibility/data-safety divergence rather than a classic exploitable vulnerability — review whether it warrants a CVE.

Remediation: Acknowledged by Canonical; fixed in PR #​9741 (uucore: use --suffix to enable backup mode), commit 939ab037a, merged 2025-12-21. determine_backup_mode now has a --suffix-alone branch that resolves the mode from $VERSION_CONTROL (defaulting to existing). Released in uucore 0.6.0 and later (vulnerable: < 0.6.0). Regression tests added in the same file: test_backup_mode_suffix_without_backup_option and test_backup_mode_suffix_without_backup_option_with_env_var.

Reported by Zellic in the uutils coreutils Program Security Assessment (prepared for Canonical, Jan 20 2026), audited commit 3a07ffc5a9bd4c283e75afa548ba1f1957bad242. Finding 3.7. Credit: Zellic.

Severity

• CVSS Score: 7.0 / 10 (High)
• Vector String: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

References

• https://github.com/uutils/coreutils/security/advisories/GHSA-fqf6-gxhh-2xhw
• https://github.com/uutils/coreutils/pull/9741
• https://github.com/advisories/GHSA-fqf6-gxhh-2xhw

This data is provided by the GitHub Advisory Database (CC-BY 4.0).

Release Notes

v0.6.0

Compare Source

Rust Coreutils 0.6.0 Release:

We are happy to announce the release of Rust Coreutils 0.6.0 — a major milestone achieving 96% GNU compatibility with significant safety improvements, enhanced locale support, and extensive bug fixes!

Highlights:

• Major GNU Compatibility Leap

  • 622 passing tests (+56 from 0.5.0), achieving 96.28% compatibility
  • Reduced failures from 55 to just 16 (-39) and skipped tests from 23 to 7 (-16)
  • Extensive test suite improvements across sort, ls, date, cksum, tail, and many more

• Safety & Code Quality

  • Removed unsafe code from date, sort, locale.rs, and other utilities
  • Replaced raw libc calls with safe nix crate equivalents throughout
  • Enhanced error handling to avoid panics on /dev/full writes across many utilities

• Locale & Internationalization

  • Added ICU support for locale-aware day/month names in date
  • Implemented locale-aware hour formatting and calendar support
  • Added locale-aware numeric sorting with thousand separator support in sort
  • Locale-aware collation support in join

• Performance Improvements

  • base32/base64/basenc: Optimized with reduced memset operations
  • shuf: Optimized numeric output and added --random-seed option
  • date: Wrapped stdout in BufWriter for batch processing
  • uniq: Optimized memory usage for ignore-case comparison
  • tsort: Avoid reading entire input into memory, intern strings
  • df: Performance improvements with better filesystem handling

• Platform Support Expansion

  • Expanded safe directory traversal to all Unix platforms
  • Enhanced Cygwin support across multiple utilities
  • Added SMACK security module support for ls, id, mkdir, mkfifo, mknod
  • Added RISC-V 64-bit musl target to CI

• Notable Utility Improvements

  • cksum/hashsum: Merged common logic, removed deprecated hashsum binary
  • tail: Added --debug flag, fixed -F symlink tracking, fixed --pid with FIFO
  • timeout: Added comprehensive signal handling and --verbose improvements
  • sort: Legacy +POS/-POS handling, locale-aware collation, debug key annotations
  • pr: Multiple fixes for headers, form feeds, and pagination options
  • chmod: Fixed recursive handling and --preserve-root option
  • rm: Fixed error reporting and symlink handling

• Contributions: This release was made possible by 41 new contributors joining our community

GNU Test Suite Compatibility:

Call to Action:

Help us translate - Contribute translations at Weblate
Sponsor us on GitHub to accelerate development: github.com/sponsors/uutils

What's Changed

arch

• Avoid >/dev/full panic by @​oech3 in #​10516

base64

• base(nc|32|64): Optimize performances reduction memset by @​mattsu2020 in #​9632
• Improve read error message by @​dezgeg in #​10512

basename

• basename . >/dev/full panics by @​oech3 in #​10553

cat

• do not connect to unix domain socket and instead return an error by @​asder8215 in #​9755
• fix write error handling to propagate errors instead of panicking by @​rynewang in #​10038
• tests(cat,stdbuf): Add broken-pipe robustness tests (#​4627) by @​naoNao89 in #​8798

chgrp

• correct exit code by @​cerdelen in #​10035

chmod

• fix error handling if multiple files are handled by @​cerdelen in #​9793
• recursive hyper nested dirs by @​cerdelen in #​9990
• preserve root by @​cerdelen in #​10033

chroot

• use execvp directly instead of process::Command by @​mattsu2020 in #​9013

cksum

• Checksum ignore binary by @​RenjiSann in #​9695
• Improve check-only flags handling by @​RenjiSann in #​9770
• Move --ckeck's deps to clap by @​oech3 in #​9996
• Move handle_tag_text_binary_flags to clap by @​oech3 in #​9999
• Simple default tag variable by @​oech3 in #​10057
• cksum,hashsum: Drop a message replaced by clap by @​oech3 in #​10055
• cksum/hashsum: Merge common logic under a common crate by @​RenjiSann in #​10142
• Revert recent checksum CLI changes by @​RenjiSann in #​10141
• Don't panic when checked file returned EIO by @​oech3 in #​10534
• --debug 2>/dev/full does not abort by @​oech3 in #​10589
• -c /dev/null 2>/dev/full should not abort by @​oech3 in #​10643

comm

• fix comparison when reading from pipes by @​martinkunkel2 in #​9545
• Fixes #​10192 - fix(comm): improve stdout handling and add test for lossy UTF-8 output by @​Paol0B in #​10206
• Properly handle I/O errors when reading input by @​dezgeg in #​10567

cp

• fix preserve-gid when canonicalize fails due to inaccessible parent dirs by @​ChrisDryden in #​9803
• reduce memory usage for cp -al by skipping unnecessary tracking by @​ChrisDryden in #​9805
• set status code when encountering circular symbolic links by @​Thanhphan1147 in #​9757
• symlink flags fixing conflicting flag logic to use last flag by @​Dylans123 in #​9960
• Added test for permissions copying to an existing file by @​max-amb in #​10049
• use FileInformation without dereference for symlink destination check to match GNU behaviour for test/nfs-removal-race by @​ChrisDryden in #​10086
• Avoid other error at cp stream /dev/full by @​oech3 in #​10139
• Fixed posixly correct dangling symlink test by @​max-amb in #​10247
• cp/mv: suppress xattr ENOTSUP errors for optional preservation by @​ChrisDryden in #​10083

csplit

• detect and report write errors by @​ChrisDryden in #​9855

date

• remove unsafe by @​xtqqczze in #​9688
• fix inconsistent input parsing between -s and -d flags by @​AnarchistHoneybun in #​9690
• Implement locale-aware hour formatting for date command by @​naoNao89 in #​9654
• improve fuzzer and handle edge cases by @​ChrisDryden in #​9661
• fix hardcoded formats with nl_langinfo(D_T_FMT) by @​naoNao89 in #​9756
• Fix military date parsing not adjusting date by @​cerdelen in #​9785
• add benchmark by @​CrazyRoka in #​9911
• benchmark: keep only one value by @​sylvestre in #​9989
• avoid double parsing when resolving timezone abbreviations by @​CrazyRoka in #​9997
• perf(date): wrap stdout in BufWriter to improve batch processing by @​CrazyRoka in #​9994
• use PosixCustom formatting for GNU-compatible output by @​ChrisDryden in #​10245
• test: %x format specifier respects locale settings by @​sylvestre in #​10285
• handle parentheses as comments like GNU date by @​sylvestre in #​10133
• add ICU support for day/months names by @​sylvestre in #​10457
• add locale-aware calendar support for era years by @​sylvestre in #​10473
• use jiff-icu for locale calendar conversions by @​ChrisDryden in #​10499
• fuzz_date: skip combined short options like -Rf- that read from stdin by @​ChrisDryden in #​10547
• fix %% not being preserved in locale format strings by @​ChrisDryden in #​10577

dd

• should terminate with error if skip argument is too large by @​ic3man5 in #​7275
• use actual filename in nocache error messages by @​ChrisDryden in #​9820
• fix nocache flag handling at EOF by @​ChrisDryden in #​9818
• use ibs/obs-sized buffer for skip/seek on non-seekable files by @​ChrisDryden in #​9806
• use seek for stdin skip when possible by @​ChrisDryden in #​9821
• get rid of line buffered stdout by @​svlv in #​10235
• feat(dd): add first benchmark suite for performance validation by @​naoNao89 in #​9136

df

• add binfmt_misc to is_dummy_filesystem by @​van-sprundel in #​9975
• add benchmarks by @​sylvestre in #​10123
• improve perfs by @​sylvestre in #​10122
• add rootfs to is_dummy_filesystem by @​ChrisDryden in #​10159
• Sum scaled values to compute the totals by @​3v1n0 in #​10438

dir

• add "about" and "usage" instead of being "ls" by @​w007878 in #​10369

dirname

• refactor(dirname): implement pure string manipulation per POSIX by @​naoNao89 in #​8936
• use Cow::Borrowed to avoid unnecessary heap allocations by @​sylvestre in #​10294
• add fuzzer to test GNU compatibility by @​sylvestre in #​10289

du

• fix -l/--count-links option not counting hardlinks separately by @​WaterWhisperer in #​9884
• count links based on inode by @​svlv in #​10313

echo

• Reduce memory allocation by @​AnuthaDev in #​10090

env

• preserve non-UTF-8 environment variables and remove unwrap by @​ChrisDryden in #​9726
• Improve GNU coreutils Compatibility & Fix env-signal-handler.sh Test by @​mattsu2020 in #​9465
• env/printenv: dedup the code by @​sylvestre in #​9841
• dedup some code by @​sylvestre in #​9874
• --debug 2>/dev/full does not abort by @​oech3 in #​10594

expand

• address a cognitive_complexity warnings by @​sylvestre in #​9930
• expand, unexpand: Properly handle I/O errors by @​dezgeg in #​10510

expr

• fix regex matching on inputs containing newlines by @​ChrisDryden in #​10543

fmt

• handle invalid UTF-8 input by replacing malformed sequences by @​mattsu2020 in #​9329

fold

• fix gnu test fold-zero-width.sh by @​mattsu2020 in #​9274
• Add support for -c short option and fix character mode tab handling by @​mattsu2020 in #​10530

groups

• groups > /dev/full panics by @​oech3 in #​10523

hashsum

• Drop --no-names by @​oech3 in #​9762
• Drop non-GNU --bits flag by @​RenjiSann in #​9773
• Drop locales for --bits by @​oech3 in #​9811
• Drop benches as covered by cksum benches by @​oech3 in #​9842
• Move --ckeck's deps to clap by @​oech3 in #​9998
• hashsum, cksum: Move default stdin to clap by @​oech3 in #​10043
• hashsum, cksum: Move --check confliction to clap by @​oech3 in #​10041
• Remove hashsum by @​RenjiSann in #​10587
• Additional hashsum cleanup by @​oech3 in #​10622

head

• Consolidate legacy argument parsing for head/tail by @​sylvestre in #​9727
• refactor(head): replace unsafe raw fd usage with safe AsFd API by @​mattsu2020 in #​10161

hostid

• Avoid hostid > /dev/full panic by @​oech3 in #​10172

id

• -p crashes with panic when the real GID doesn't exist in /etc/group by @​sylvestre in #​9670
• Fix incorrect human-readable output by @​frendsick in #​7814

install

• add FreeBSD's -U (unprivileged) option by @​alexandrefresnais in #​9526
• prevent TOCTOU race attack by @​Dolphindalt in #​10067
• install -dv a >/dev/full panics by @​oech3 in #​10541

join

• add benchmarks by @​WaterWhisperer in #​10005
• add benchmark with the French locale by @​WaterWhisperer in #​10025
• consider locale collation in field comparison by @​WaterWhisperer in #​9982
• Benchmark join with actual Unicode data requiring locale collation by @​sylvestre in #​10391

kill

• kill -1 should trigger an error by @​sylvestre in #​9700

ln

• ln -svf /dev/null /tmp/a > /dev/full panics by @​oech3 in #​10539

logname

• logname > /dev/full panics by @​oech3 in #​10522

ls

• Make ls pass the GNU ls-misc.pl suite by @​karanabe in #​9262
• Add SMACK support by @​ChrisDryden in #​9868
• some improvements after #​9431 by @​sylvestre in #​10149
• fixes for capability coloring by @​bkueng in #​8615
• Proper alignment for capabilities and ACLs notifications by @​kimono-koans in #​8793
• fix symlink chain target coloring by @​ChrisDryden in #​10274

mkdir

• create directories atomically with correct permissions by @​rynewang in #​10036
• Add SMACK support to id, mkdir, mkfifo, mknod utilities by @​ChrisDryden in #​9910
• chore: add test for setgid bit inheritance in mkdir -p by @​0xferrous in #​10412
• mkdir -pv a >/dev/full panics by @​oech3 in #​10540

mkfifo

• replace unsafe libc::mkfifo with nix::unistd::mkfifo by @​sylvestre in #​10112
• do not change permission when failed to create by @​w007878 in #​10376
• error when non-file permission mode set by @​w007878 in #​10372

mknod

• Avoid major/minor No overflow by @​oech3 in #​10196
• fix SELinux cleanup when context setting fails by @​ChiamakaUI in #​10582

mktemp

• Fix template validation to require trailing consecutive Xs by @​Xylphy in #​10224
• treat empty TMPDIR as unset and fallback to /tmp by @​reubenwong97 in #​10566

more

• file status made more idiomatic. by @​devnexen in #​10151
• test(more): Fix test_from_line_option race condition by increasing PTY delay by @​naoNao89 in #​9629

mv

• Adding fixes for i-3 GNU tests related to tty output when file is not writeable by @​ChrisDryden in #​9599
• support moving folder containing symlinks to different filesystem by @​yuankunzhang in #​8605
• test_mv.rs: Remove ignore from test_mv_broken_symlink_to_another_fs by @​oech3 in #​9978
• test-mv: Use temporary directory in /dev/shm by @​3v1n0 in #​10439

nice

• use Command::exec() instead of libc::execvp() by @​Ecordonnier in #​9612
• simplify the code by @​sylvestre in #​9931
• nice -n huge_num true by @​oech3 in #​10213
• nice > /dev/full panics by @​oech3 in #​10524

nl

• preserve raw bytes in output instead of using from_utf8_lossy by @​ChrisDryden in #​9673

nohup

• use POSIXLY_CORRECT to determine failure exit code by @​ChrisDryden in #​9685

nproc

• Avoid nproc > /dev/full panic by @​oech3 in #​10157

numfmt

• add --debug flag to print warnings about invalid input (#​10110)
• add --unit-separator option for output formatting by @​ChrisDryden in #​10108
• support non-UTF8 delimiters for locales like GB18030 by @​ChrisDryden in #​10079
• align error messages for suffixes by @​sbentmar in #​9887

pr

• Enable pr-tests.pl with suppressed diff output by @​ChrisDryden in #​9829
• add -b flag for backwards compatibility by @​ChrisDryden in #​9993
• allow character, block, and fifo devices as input by @​SaathwikDasari in #​9946
• use 72 char line width for all page headers by @​jfinkels in #​10059
• add default values for -s and -S separator options by @​ChrisDryden in #​10073
• add -T/--omit-pagination option by @​ChrisDryden in #​10107
• uniformly scan for form feed and newline chars by @​jfinkels in #​10303
• refactor common code for reading from file by @​jfinkels in #​10334
• ignore empty line after form feed char by @​jfinkels in #​10331
• ignore empty line after newline char by @​jfinkels in #​10332
• remove unused lines_printed variable by @​jfinkels in #​10474

printenv

• Fix printenv non-UTF8 by @​RenjiSann in #​9728

printf

• Format String Parsing Overflow Causes Panic by @​sylvestre in #​9693
• printf 1 > /dev/full is not silent by @​oech3 in #​10171

ptx

• fix incorrect column width calculation and padding logic by @​CrazyRoka in #​9681
• implement -S/--sentence-regexp by @​CrazyRoka in #​9682
• fix panic when reference length exceeds line width by @​CrazyRoka in #​9816
• handle invalid regex arguments gracefully instead of panicking by @​CrazyRoka in #​9825
• handle duplicate input files by @​CrazyRoka in #​9823

readlink

• readlink /etc/mtab > /dev/full panics by @​oech3 in #​10525

rm

• fix safe traversal/access by @​mattsu2020 in #​9577
• fix error reporting for -r on Linux fixing #​9011 by @​ChrisDryden in #​10111
• don't treat symlinks as write-protected by @​GomesGoncalo in #​10232
• no abbreviation no preserve root by @​cerdelen in #​10205
• fix for -rf ./ and variants silently delete current directory by @​jacek-kurlit in #​9924

rmdir

• Remove all trailing slashes when checking for symlinks by @​cerdelen in #​9983

runcon

• use Command::exec() instead of libc::execvp() by @​Ecordonnier in #​9611
• add missing utilities to enable tests/runcon/runcon-compute and removing PATH from runcon -c by @​ChrisDryden in #​10088

seq

• add SIGPIPE handling for GNU compatibility by @​ChrisDryden in #​9657
• Change fuzz_seq_parse_number to should_pass: false by @​sylvestre in #​10335

shred

• ensure deterministic pass sequence compatibility with reference implementation by @​sylvestre in #​9317
• fix(shred): stop immediately on write errors by @​naoNao89 in #​9649

shuf

• Add --random-seed, make --random-source GNU-compatible, report write failures, optimize by @​blyxxyz in #​7585
• optimize numeric output by avoiding write!() by @​CrazyRoka in #​10048
• Tune performance for -i 1-1000000 by @​oech3 in #​10478

sort

• Add legacy +POS/-POS handling in sort to pass GNU sort-field-limit test by @​karanabe in #​9501
• remove unsafe by @​xtqqczze in #​9694
• fix(sort): GNU sort-continue.sh test by @​mattsu2020 in #​9107
• Align sort debug key annotations with GNU coreutils by @​mattsu2020 in #​9468
• fixing locale benchmarks since locale is cached in OnceCell by @​ChrisDryden in #​9914
• bench(sort): add general numeric benchmark by @​mattsu2020 in #​10101
• feat(sort): add warning messages for obsolescent keys and options by @​mattsu2020 in #​9900
• refine error handling and localize field parsing errors by @​mattsu2020 in #​10068
• followup of #​10068 by @​sylvestre in #​10226
• gnu coreutils compatibility (sort float.sh) by @​mattsu2020 in #​9839
• fix(sort): Enable locale-aware collation for UTF-8 locales by @​quantum-encoding in #​9176
• gnu coreutils compatibility (sort.pl) by @​mattsu2020 in #​9862
• gnu core utils test (sort-merge-fdlimit.sh) by @​mattsu2020 in #​9849
• feat(sort): add locale-aware numeric sorting support(sort-h-thousands-sep.sh) by @​mattsu2020 in #​9848
• FIX 10314 sort: locale-based collation is not supported by @​Paol0B in #​10481
• fix: numeric sort (-n) does not recognize thousand separators by @​Kaua-Klassmann in #​10339

split

• Added error when attempting to create file that already exists as directory by @​max-amb in #​9945

stat

• fix(stat): Collection of fixes for stat(1) by @​Alonely0 in #​9078

stdbuf

• use exec instead of forking by @​Ecordonnier in #​9495

stty

• implemented hex and octal parsing for rows and columns by @​ChrisDryden in #​9516
• columns env support and integration testing by @​ChrisDryden in #​9490
• Added unit tests for stty.rs to improve test coverage by @​naoNao89 in #​9094
• use stdin for TTY operations instead of /dev/tty by @​ChrisDryden in #​9881
• Implemented input and output baud rate setting for stty by @​ChrisDryden in #​9517
• bump libc & tmp stop musl-i686 by @​oech3 in #​10072
• Add bad-speed.sh test script to fetch-gnu.sh by @​ChrisDryden in #​10077
• Add cfg_aliases by @​oech3 in #​10443
• Don't panic when GNU provided stty 51 us by @​oech3 in #​10526

sync

• Reset O_NONBLOCK flag after file validation to match GNU behavior by @​naoNao89 in #​9437

tac

• fix error message by @​cerdelen in #​9942
• use temp file for stdin to respect TMPDIR and handle disk-full errors by @​ChrisDryden in #​10094
• add regex flavor translation for compatibility and new test case by @​FidelSch in #​10416
• tac, tail, dd: detect closed stdin before Rust sanitizes it to /dev/null by @​ChrisDryden in #​9664

tail

• fix: patch inotify-dir-recreate test for notify crate's threaded inotify by @​ChrisDryden in #​9666
• Removing flaky inotify-dir patch by @​ChrisDryden in #​9800
• fix --pid with FIFO by using non-blocking open by @​ChrisDryden in #​9663
• fix big number handling and error message quoting by @​ChrisDryden in #​10155
• add --debug flag to show follow implementation mode by @​ChrisDryden in #​10105
• fix pipe-f test by detecting broken stdout pipe by @​ChrisDryden in #​10156
• Fix tail -c panics when requested bytes exceed file size by @​dhr412 in #​10268
• tests: Add 'tests/tail/follow-name' to ignore list by @​ChrisDryden in #​10297
• fix behaviour of tail -n0 in follow mode by @​AnandajithS in #​9114
• Fixed passing -0 to tail. Closes #​10191 by @​trypsynth in #​10209
• fix -F to properly track symlinks with changing targets by @​ChrisDryden in #​10158

tee

• allow multiple -a flags by @​sylvestre in #​10293
• tee miss/ing 2>/dev/full should not abort by @​oech3 in #​10637

test

• fixing unary operators that are getting parsed as argument instead of string literal by @​georgepaulsen in #​9951
• Trim whitespace in integer comparisons by @​dezgeg in #​10489

timeout

• cleanup return values by @​Ecordonnier in #​9576
• use nix kill/setpgid to reduce unsafe by @​mattsu2020 in #​10120
• backport timeout tests from master by @​ChrisDryden in #​10195
• display signal 0 as '0' instead of 'EXIT' in verbose mode by @​ChrisDryden in #​10194
• Improve error handling with explicit expect messages by @​naoNao89 in #​9435
• add all signal handlers, pass on signals to child, add ignored signal handling by @​ChrisDryden in #​10254

touch

• fix: touch -r: dangling symlink reference is accepted Fixes #​9703 by @​dshemetov in #​9732
• Use libc::UTIME_NOW in touch when updating time to now by @​iburaky2 in #​9870
• fix: use jiff time for touch tests by @​aaron-ang in #​10093
• extent a test for many device files by @​oech3 in #​10199

truncate

• eliminate duplicate stat() syscall by @​Jean-Christian-Cirstea in #​9527

tsort

• gnu misc tsort.pl by @​mattsu2020 in #​9289
• perf (tsort) : avoid reading the whole input into memory and intern strings by @​anastygnome in #​9872
• Disable tsort_input_parsing_heavy for being too intermittent by @​sylvestre in #​10109

uname

• remove unwrap() for > /dev/full by @​oech3 in #​10517

unexpand

• use byte count for multibyte characters for column width when using -a flag by @​JaneIllario in #​9949
• add support for extended tab stop syntax (+N and /N) by @​sylvestre in #​9265
• fix +0 and /0 handling, add integration tests by @​ChrisDryden in #​10406

uniq

• optimize memory usage for ignore-case comparison by @​CrazyRoka in #​10050
• rename keys_differ to keys_are_equal by @​cakebaker in #​10070

uptime

• Fix uptime on macOS using sysctl kern.boottime fallback by @​naoNao89 in #​8908
• refactor(uptime): use FluentArgs for loadavg formatting in get_format by @​mattsu2020 in #​10102
• Add -p, --pretty argument by @​Ivan-Shaml in #​10143

users

• Avoid > /dev/full panic by @​oech3 in #​10165

wc

• GNU wc-cpu.sh by @​mattsu2020 in #​9144
• Ensure the output order of stdout and stderror remains unchanged. by @​mattsu2020 in #​9905
• respect POSIXLY_CORRECT for word counting by @​dhr412 in #​10344
• fix word undercount with invalid byte sequences by @​dhr412 in [#​10348](https://redirect.github.c

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