Mail Archives: cygwin/2006/10/25/00:44:44
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A new release of coreutils, 6.4-1, is available for experimental use.
Version 5.97-1 remains the current version.
NEWS:
=====
This is a new upstream release of coreutils. It depends on features that
were only added in cygwin-1.5.21-1. Upstream changes from 5.97 are
attached below; see also /usr/share/doc/coreutils-6.4/.
This release features a major overhaul in file traversal algorithms, by
emulating openat(2) using /proc/self/fd until such time as cygwin provides
openat natively. As a result, there may be some slight behavior changes
from 5.97. Hence, I am leaving this version experimental for a week or so
to get some feedback if anything regressed.
DESCRIPTION:
============
GNU coreutils provides a collection of commonly used utilities essential
to a standard POSIX environment. It comprises the former textutils,
sh-utils, and fileutils packages. The following executables are included:
[ base64 basename cat chgrp chmod chown chroot cksum comm cp csplit cut
date dd df dir dircolors dirname du echo env expand expr factor false fmt
fold gkill groups head hostid hostname id install join link ln logname ls
md5sum mkdir mkfifo mknod mv nice nl nohup od paste pathchk pinky pr
printenv printf ptx pwd readlink rm rmdir seq sha1sum sha224sum sha256sum
sha384sum sha512sum shred shuf sleep sort split stat stty su sum sync tac
tail tee test touch tr true tsort tty uname unexpand uniq unlink users
vdir wc who whoami yes
UPDATE:
=======
To update your installation, click on the "Install Cygwin now" link on the
http://cygwin.com/ web page. This downloads setup.exe to your system.
Save it and run setup, answer the questions, then look for 'coreutils' in
the 'Base' category (it should already be selected). You will need to use
the 'Exp' radio button to get the experimental version.
DOWNLOAD:
=========
Note that downloads from sources.redhat.com (aka cygwin.com) aren't
allowed due to bandwidth limitations. This means that you will need to
find a mirror which has this update, please choose the one nearest to you:
http://cygwin.com/mirrors.html
QUESTIONS:
==========
If you want to make a point or ask a question the Cygwin mailing list is
the appropriate place.
- --
Eric Blake
volunteer cygwin coreutils maintainer
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* Major changes in release 6.4 (2006-10-22) [stable]
** Bug fixes
chgrp and chown would malfunction when invoked with both -R and -H and
with one or more of the following: --preserve-root, --verbose, --changes,
--from=o:g (chown only). This bug was introduced with the switch to
gnulib's openat-based variant of fts, for coreutils-6.0.
cp --backup dir1 dir2, would rename an existing dir2/dir1 to dir2/dir1~.
This bug was introduced in coreutils-6.0.
With --force (-f), rm no longer fails for ENOTDIR.
For example, "rm -f existing-non-directory/anything" now exits
successfully, ignoring the error about a nonexistent file.
* Major changes in release 6.3 (2006-09-30) [stable]
** Improved robustness
pinky no longer segfaults on Darwin 7.9.0 (MacOS X 10.3.9) due to a
buggy native getaddrinfo function.
rm works around a bug in Darwin 7.9.0 (MacOS X 10.3.9) that would
sometimes keep it from removing all entries in a directory on an HFS+
or NFS-mounted partition.
sort would fail to handle very large input (around 40GB) on systems with a
mkstemp function that returns a file descriptor limited to 32-bit offsets.
** Bug fixes
chmod would fail unnecessarily in an unusual case: when an initially-
inaccessible argument is rendered accessible by chmod's action on a
preceding command line argument. This bug also affects chgrp, but
it is harder to demonstrate. It does not affect chown. The bug was
introduced with the switch from explicit recursion to the use of fts
in coreutils-5.1.0 (2003-10-15).
cp -i and mv -i occasionally neglected to prompt when the copy or move
action was bound to fail. This bug dates back to before fileutils-4.0.
With --verbose (-v), cp and mv would sometimes generate no output,
or neglect to report file removal.
For the "groups" command:
"groups" no longer prefixes the output with "user :" unless more
than one user is specified; this is for compatibility with BSD.
"groups user" now exits nonzero when it gets a write error.
"groups" now processes options like --help more compatibly.
shuf would infloop, given 8KB or more of piped input
** Portability
Versions of chmod, chown, chgrp, du, and rm (tools that use openat etc.)
compiled for Solaris 8 now also work when run on Solaris 10.
* Major changes in release 6.2 (2006-09-18) [stable candidate]
** Changes in behavior
mkdir -p and install -d (or -D) now use a method that forks a child
process if the working directory is unreadable and a later argument
uses a relative file name. This avoids some race conditions, but it
means you may need to kill two processes to stop these programs.
rm now rejects attempts to remove the root directory, e.g., `rm -fr /'
now fails without removing anything. Likewise for any file name with
a final `./' or `../' component.
tail now ignores the -f option if POSIXLY_CORRECT is set, no file
operand is given, and standard input is any FIFO; formerly it did
this only for pipes.
** Infrastructure changes
Coreutils now uses gnulib via the gnulib-tool script.
If you check the source out from CVS, then follow the instructions
in README-cvs. Although this represents a large change to the
infrastructure, it should cause no change in how the tools work.
** Bug fixes
cp --backup no longer fails when the last component of a source file
name is "." or "..".
"ls --color" would highlight other-writable and sticky directories
no differently than regular directories on a file system with
dirent.d_type support.
"mv -T --verbose --backup=t A B" now prints the " (backup: B.~1~)"
suffix when A and B are directories as well as when they are not.
mv and "cp -r" no longer fail when invoked with two arguments
where the first one names a directory and the second name ends in
a slash and doesn't exist. E.g., "mv dir B/", for nonexistent B,
now succeeds, once more. This bug was introduced in coreutils-5.3.0.
* Major changes in release 6.1 (2006-08-19) [unstable]
** Changes in behavior
df now considers BSD "kernfs" file systems to be dummies
** New features
printf now supports the 'I' flag on hosts whose underlying printf
implementations support 'I', e.g., "printf %Id 2".
** Bug fixes
cp --sparse preserves sparseness at the end of a file, even when
the file's apparent size is not a multiple of its block size.
[introduced with the original design, in fileutils-4.0r, 2000-04-29]
df (with a command line argument) once again prints its header
[introduced in coreutils-6.0]
ls -CF would misalign columns in some cases involving non-stat'able files
[introduced in coreutils-6.0]
* Major changes in release 6.0 (2006-08-15) [unstable]
** Improved robustness
df: if the file system claims to have more available than total blocks,
report the number of used blocks as being "total - available"
(a negative number) rather than as garbage.
dircolors: a new autoconf run-test for AIX's buggy strndup function
prevents malfunction on that system; may also affect cut, expand,
and unexpand.
fts no longer changes the current working directory, so its clients
(chmod, chown, chgrp, du) no longer malfunction under extreme conditions.
pwd and other programs using lib/getcwd.c work even on file systems
where dirent.d_ino values are inconsistent with those from stat.st_ino.
rm's core is now reentrant: rm --recursive (-r) now processes
hierarchies without changing the working directory at all.
** Changes in behavior
basename and dirname now treat // as different from / on platforms
where the two are distinct.
chmod, install, and mkdir now preserve a directory's set-user-ID and
set-group-ID bits unless you explicitly request otherwise. E.g.,
`chmod 755 DIR' and `chmod u=rwx,go=rx DIR' now preserve DIR's
set-user-ID and set-group-ID bits instead of clearing them, and
similarly for `mkdir -m 755 DIR' and `mkdir -m u=rwx,go=rx DIR'. To
clear the bits, mention them explicitly in a symbolic mode, e.g.,
`mkdir -m u=rwx,go=rx,-s DIR'. To set them, mention them explicitly
in either a symbolic or a numeric mode, e.g., `mkdir -m 2755 DIR',
`mkdir -m u=rwx,go=rx,g+s' DIR. This change is for convenience on
systems where these bits inherit from parents. Unfortunately other
operating systems are not consistent here, and portable scripts
cannot assume the bits are set, cleared, or preserved, even when the
bits are explicitly mentioned. For example, OpenBSD 3.9 `mkdir -m
777 D' preserves D's setgid bit but `chmod 777 D' clears it.
Conversely, Solaris 10 `mkdir -m 777 D', `mkdir -m g-s D', and
`chmod 0777 D' all preserve D's setgid bit, and you must use
something like `chmod g-s D' to clear it.
`cp --link --no-dereference' now works also on systems where the
link system call cannot create a hard link to a symbolic link.
This change has no effect on systems with a Linux-based kernel.
csplit and nl now use POSIX syntax for regular expressions, not
Emacs syntax. As a result, character classes like [[:print:]] and
interval expressions like A\{1,9\} now have their usual meaning,
. no longer matches the null character, and \ must precede the + and
? operators.
date: a command like date -d '2006-04-23 21 days ago' would print
the wrong date in some time zones. (see the test for an example)
df changes:
df now considers "none" and "proc" file systems to be dummies and
therefore does not normally display them. Also, inaccessible file
systems (which can be caused by shadowed mount points or by
chrooted bind mounts) are now dummies, too.
df now fails if it generates no output, so you can inspect the
exit status of a command like "df -t ext3 -t reiserfs DIR" to test
whether DIR is on a file system of type "ext3" or "reiserfs".
expr no longer complains about leading ^ in a regular expression
(the anchor is ignored), or about regular expressions like A** (the
second "*" is ignored). expr now exits with status 2 (not 3) for
errors it detects in the expression's values; exit status 3 is now
used only for internal errors (such as integer overflow, which expr
now checks for).
install and mkdir now implement the X permission symbol correctly,
e.g., `mkdir -m a+X dir'; previously the X was ignored.
install now creates parent directories with mode u=rwx,go=rx (755)
instead of using the mode specified by the -m option; and it does
not change the owner or group of parent directories. This is for
compatibility with BSD and closes some race conditions.
ln now uses different (and we hope clearer) diagnostics when it fails.
ln -v now acts more like FreeBSD, so it generates output only when
successful and the output is easier to parse.
ls now defaults to --time-style='locale', not --time-style='posix-long-iso'.
However, the 'locale' time style now behaves like 'posix-long-iso'
if your locale settings appear to be messed up. This change
attempts to have the default be the best of both worlds.
mkfifo and mknod no longer set special mode bits (setuid, setgid,
and sticky) with the -m option.
nohup's usual diagnostic now more precisely specifies the I/O
redirections, e.g., "ignoring input and appending output to
nohup.out". Also, nohup now redirects stderr to nohup.out (or
$HOME/nohup.out) if stdout is closed and stderr is a tty; this is in
response to Open Group XCU ERN 71.
rm --interactive now takes an optional argument, although the
default of using no argument still acts like -i.
rm no longer fails to remove an empty, unreadable directory
seq changes:
seq defaults to a minimal fixed point format that does not lose
information if seq's operands are all fixed point decimal numbers.
You no longer need the `-f%.f' in `seq -f%.f 1048575 1024 1050623',
for example, since the default format now has the same effect.
seq now lets you use %a, %A, %E, %F, and %G formats.
seq now uses long double internally rather than double.
sort now reports incompatible options (e.g., -i and -n) rather than
silently ignoring one of them.
stat's --format=FMT option now works the way it did before 5.3.0:
FMT is automatically newline terminated. The first stable release
containing this change was 5.92.
stat accepts the new option --printf=FMT, where FMT is *not*
automatically newline terminated.
stat: backslash escapes are interpreted in a format string specified
via --printf=FMT, but not one specified via --format=FMT. That includes
octal (\ooo, at most three octal digits), hexadecimal (\xhh, one or
two hex digits), and the standard sequences (\a, \b, \f, \n, \r, \t,
\v, \", \\).
With no operand, 'tail -f' now silently ignores the '-f' only if
standard input is a FIFO or pipe and POSIXLY_CORRECT is set.
Formerly, it ignored the '-f' when standard input was a FIFO, pipe,
or socket.
** Scheduled for removal
ptx's --copyright (-C) option is scheduled for removal in 2007, and
now evokes a warning. Use --version instead.
rm's --directory (-d) option is scheduled for removal in 2006. This
option has been silently ignored since coreutils 5.0. On systems
that support unlinking of directories, you can use the "unlink"
command to unlink a directory.
Similarly, we are considering the removal of ln's --directory (-d,
-F) option in 2006. Please write to <bug-coreutils AT gnu DOT org> if this
would cause a problem for you. On systems that support hard links
to directories, you can use the "link" command to create one.
** New programs
base64: base64 encoding and decoding (RFC 3548) functionality.
sha224sum: print or check a SHA224 (224-bit) checksum
sha256sum: print or check a SHA256 (256-bit) checksum
sha384sum: print or check a SHA384 (384-bit) checksum
sha512sum: print or check a SHA512 (512-bit) checksum
shuf: Shuffle lines of text.
** New features
chgrp now supports --preserve-root, --no-preserve-root (default),
as it was documented to do, and just as chmod, chown, and rm do.
New dd iflag= and oflag= flags:
'directory' causes dd to fail unless the file is a directory, on
hosts that support this (e.g., Linux kernels, version 2.1.126 and
later). This has limited utility but is present for completeness.
'noatime' causes dd to read a file without updating its access
time, on hosts that support this (e.g., Linux kernels, version
2.6.8 and later).
'nolinks' causes dd to fail if the file has multiple hard links,
on hosts that support this (e.g., Solaris 10 and later).
ls accepts the new option --group-directories-first, to make it
list directories before files.
rm now accepts the -I (--interactive=once) option. This new option
prompts once if rm is invoked recursively or if more than three
files are being deleted, which is less intrusive than -i prompting
for every file, but provides almost the same level of protection
against mistakes.
shred and sort now accept the --random-source option.
sort now accepts the --random-sort (-R) option and `R' ordering option.
sort now supports obsolete usages like "sort +1 -2" unless
POSIXLY_CORRECT is set. However, when conforming to POSIX
1003.1-2001 "sort +1" still sorts the file named "+1".
wc accepts a new option --files0-from=FILE, where FILE contains a
list of NUL-terminated file names.
** Bug fixes
cat with any of the options, -A -v -e -E -T, when applied to a
file in /proc or /sys (linux-specific), would truncate its output,
usually printing nothing.
cp -p would fail in a /proc-less chroot, on some systems
When `cp -RL' encounters the same directory more than once in the
hierarchy beneath a single command-line argument, it no longer confuses
them with hard-linked directories.
fts-using tools (chmod, chown, chgrp, du) no longer fail due to
a double-free bug -- it could be triggered by making a directory
inaccessible while e.g., du is traversing the hierarchy under it.
fts-using tools (chmod, chown, chgrp, du) no longer misinterpret
a very long symlink chain as a dangling symlink. Before, such a
misinterpretation would cause these tools not to diagnose an ELOOP error.
ls --indicator-style=file-type would sometimes stat a symlink
unnecessarily.
ls --file-type worked like --indicator-style=slash (-p),
rather than like --indicator-style=file-type.
mv: moving a symlink into the place of an existing non-directory is
now done atomically; before, mv would first unlink the destination.
mv -T DIR EMPTY_DIR no longer fails unconditionally. Also, mv can
now remove an empty destination directory: mkdir -p a b/a; mv a b
rm (on systems with openat) can no longer exit before processing
all command-line arguments.
rm is no longer susceptible to a few low-probability memory leaks.
rm -r no longer fails to remove an inaccessible and empty directory
rm -r's cycle detection code can no longer be tricked into reporting
a false positive (introduced in fileutils-4.1.9).
shred --remove FILE no longer segfaults on Gentoo systems
sort would fail for large inputs (~50MB) on systems with a buggy
mkstemp function. sort and tac now use the replacement mkstemp
function, and hence are no longer subject to limitations (of 26 or 32,
on the maximum number of files from a given template) on HP-UX 10.20,
SunOS 4.1.4, Solaris 2.5.1 and OSF1/Tru64 V4.0F&V5.1.
tail -f once again works on a file with the append-only
attribute (affects at least Linux ext2, ext3, xfs file systems)
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