coreutils-9.11

[Bruce Dubbs]

New minor version.

[Xi Ruoyao]

i18n patch at ​https://www.linuxfromscratch.org/patches/downloads/coreutils/coreutils-9.11-i18n-1.patch.

[Bruce Dubbs]

• Noteworthy changes in release 9.11 (2026-04-20) [stable]

Bug fixes

'dd' now always diagnoses partial writes correctly upon write failure. Previously it may have indicated that only full writes were performed. [This bug was present in "the beginning".]

'fold' will no longer truncate output when encountering 0xFF bytes. [bug introduced in coreutils-9.8]

'fold' is again responsive to its input. Previously it would have delayed processing until 256KiB was read from the input. [bug introduced in coreutils-9.8]

'kill --help' now has links to valid anchors in the html manual. [bug introduced in coreutils-9.10]

When configured with --enable-systemd, the commands 'pinky', 'uptime', 'users', and 'who' no longer consider the systemd session classes 'greeter', 'lock-screen', 'background', 'background-light', and 'none' to be users. [bug introduced in coreutils-9.4]

'pwd' on ancient systems will no longer overflow a buffer when operating in deep paths longer than twice the system PATH_MAX. [bug introduced in coreutils-9.6]

'stat --printf=%%N' no longer performs unnecessary checks of the QUOTING_STYLE environment variable. [bug introduced in coreutils-8.26]

'timeout' no longer exits abruptly when its parent is the init process, e.g., when started by the entrypoint of a container. [bug introduced in coreutils-9.10]

New Features

'cut' now supports multi-byte input and delimiters. Consequently the -c option is now honored, and no longer an alias for -b, and the -n option is now honored, and no longer ignored. Also the -d option supports multi-byte delimiters.

'cut' adds new options for better compatibility: The -w,--whitespace-delimited option was added to support blank aligned fields and for better compatibility with FreeBSD/macOS. The -O option was added as an alias for the --output-delimiter option, for better compatibility with busybox/toybox. The -F option was added as an alias for -w -O ' ' for better compatibility with busybox/toybox.

'date --date' now parses dot delimited dd.mm.yy format common in Europe. This is in addition to the already supported mm/dd/yy and yy-mm-dd formats.

Changes in behavior

'cksum --check' now uses shell quoting when required, to more robustly escape file names output in diagnostics. This also affects md5sum, sha*sum, and b2sum.

Improvements

'cat' now uses zero-copy I/O on Linux when appropriate, to improve throughput. E.g., throughput improved 6x from 12.9GiB/s to 81.8GiB/s on a Power10 system.

'df --local' recognises more file system types as remote. Specifically: autofs, ncpfs, smb, smb2, gfs, gfs2, userlandfs.

'df' improves duplicate mount suppression, by checking each mount against all previously kept entries for the same device, not just the latest one.

'expand' and 'unexpand' now support multi-byte characters.

'groups' and 'id' will now exit sooner after a write error, which is significant when listing information for many users.

'install' now allows the combination of the --compare and --preserve-timestamps options.

'fold', 'join', 'numfmt', 'uniq' now use more consistent blank character determination on non GLIBC platforms. For example \u3000 (ideographic space) will be considered a blank character on all platforms.

'nl' now supports multi-byte --section-delimiter characters.

'shuf -i' now operates up to two times faster on systems with unlocked stdio functions.

'tac' will now exit sooner after a write error, which is significant when operating on a file with many lines.

'timeout' now properly detects when it is reparented by a subreaper process on Linux instead of init, e.g., the 'systemd --user' process.

'wc -l' now operates up to four and a half times faster on hosts that support Neon instructions.

'wc -m' now operates up to 2.6 times faster on GLIBC when processing non-ASCII UTF-8 characters.

'yes' now uses zero-copy I/O on Linux to significantly increase throughput. E.g., throughput improved 15x from 11.6GiB/s to 175GiB/s on a Power10 system.

Build-related

./configure --enable-single-binary=hardlinks is now supported on systems with dash as the system shell at /bin/sh. [issue introduced in coreutils-9.10]

The test suite may have failed with a "Hangup" error if run non-interactively. [issue introduced in coreutils-9.10]

[Bruce Dubbs]

Fixed at commit bdd621f288.