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172 lines
6.6 KiB
Plaintext
172 lines
6.6 KiB
Plaintext
restore djgpp, eventually
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merge TODO lists
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add unit tests for lib/*.c
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strip: add an option to specify the program used to strip binaries.
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suggestion from Karl Berry
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doc/coreutils.texi:
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Address this comment: FIXME: mv's behavior in this case is system-dependent
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Better still: fix the code so it's *not* system-dependent.
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implement --target-directory=DIR for install (per texinfo documentation)
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ls: add --format=FORMAT option that controls how each line is printed.
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cp --no-preserve=X should not attempt to preserve attribute X
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reported by Andreas Schwab
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copy.c: Address the FIXME-maybe comment in copy_internal.
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And once that's done, add an exclusion so that `cp --link'
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no longer incurs the overhead of saving src. dev/ino and dest. filename
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in the hash table.
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See if we can be consistent about where --verbose sends its output:
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These all send --verbose output to stdout:
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head, tail, rm, cp, mv, ln, chmod, chown, chgrp, install, ln
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These send it to stderr:
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shred mkdir split
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readlink is different
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Write an autoconf test to work around build failure in HPUX's 64-bit mode.
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See notes in README -- and remove them once there's a work-around.
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Integrate use of sendfile, suggested here:
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http://mail.gnu.org/archive/html/bug-fileutils/2003-03/msg00030.html
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I don't plan to do that, since a few tests demonstrate no significant benefit.
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Should printf '\0123' print "\n3"?
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per report from TAKAI Kousuke on Mar 27
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http://mail.gnu.org/archive/html/bug-coreutils/2003-03/index.html
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printf: consider adapting builtins/printf.def from bash
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df: add `--total' option, suggested here http://bugs.debian.org/186007
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seq: give better diagnostics for invalid formats:
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e.g. no or too many % directives
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seq: consider allowing format string to contain no %-directives
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m4: rename all macros that start with AC_ to start with another prefix
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resolve RH report on cp -a forwarded by Tim Waugh
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Martin Michlmayr's patch to provide ls with `--sort directory' option
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tail: don't use xlseek; it *exits*.
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Instead, maybe use a macro and return nonzero.
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add mktemp? Suggested by Nelson Beebe
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df: alignment problem of `Used' heading with e.g., -mP
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reported by Karl Berry
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tr: support nontrivial equivalence classes, e.g. [=e=] with LC_COLLATE=fr_FR
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fix tail -f to work with named pipes; reported by Ian D. Allen
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$ mkfifo j; tail -f j & sleep 1; echo x > j
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./tail: j: file truncated
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./tail: j: cannot seek to offset 0: Illegal seek
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lib/strftime.c: Since %N is the only format that we need but that
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glibc's strftime doesn't support, consider using a wrapper that
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would expand /%(-_)?\d*N/ to the desired string and then pass the
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resulting string to glibc's strftime.
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sort: Compress temporary files when doing large external sort/merges.
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This improves performance when you can compress/uncompress faster than
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you can read/write, which is common in these days of fast CPUs.
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suggestion from Charles Randall on 2001-08-10
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sort: Add an ordering option -R that causes 'sort' to sort according
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to a random permutation of the correct sort order. Also, add an
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option --random-seed=SEED that causes 'sort' to use an arbitrary
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string SEED to select which permutations to use, in a deterministic
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manner: that is, if you sort a permutation of the same input file
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with the same --random-seed=SEED option twice, you'll get the same
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output. The default SEED is chosen at random, and contains enough
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information to ensure that the output permutation is random.
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suggestion from Feth AREZKI, Stephan Kasal, and Paul Eggert on 2003-07-17
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unexpand: [http://www.opengroup.org/onlinepubs/007908799/xcu/unexpand.html]
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printf 'x\t \t y\n'|unexpand -t 8,9 should print its input, unmodified.
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printf 'x\t \t y\n'|unexpand -t 5,8 should print "x\ty\n"
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Let GNU su use the `wheel' group if appropriate.
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(there are a couple patches, already)
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sort: Investigate better sorting algorithms; see Knuth vol. 3.
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We tried list merge sort, but it was about 50% slower than the
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recursive algorithm currently used by sortlines, and it used more
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comparisons. We're not sure why this was, as the theory suggests it
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should do fewer comparisons, so perhaps this should be revisited.
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List merge sort was implemented in the style of Knuth algorithm
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5.2.4L, with the optimization suggested by exercise 5.2.4-22. The
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test case was 140,213,394 bytes, 426,4424 lines, text taken from the
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GCC 3.3 distribution, sort.c compiled with GCC 2.95.4 and running on
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Debian 3.0r1 GNU/Linux, 2.4GHz Pentium 4, single pass with no
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temporary files and plenty of RAM.
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Since comparisons seem to be the bottleneck, perhaps the best
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algorithm to try next should be merge insertion. See Knuth section
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5.3.1, who credits Lester Ford, Jr. and Selmer Johnson, American
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Mathematical Monthly 66 (1959), 387-389.
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cp --recursive: perform dir traversals in source and dest hierarchy rather
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than forming full file names. The latter (current) approach fails
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unnecessarily when the names become very long.
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tail --p is now ambiguous
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Remove suspicious uses of alloca (ones that may allocate more than
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about 4k)
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Adapt these contribution guidelines for coreutils:
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http://sources.redhat.com/automake/contribute.html
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Changes expected to go in, post-5.2.1:
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======================================
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wc: add an option, --files0-from [as for du] to make it read NUL-delimited
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file name arguments from a file.
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dd patch from Olivier Delhomme
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Apply Andreas Gruenbacher's ACL and xattr changes
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Apply Bruno Haible's hostname changes
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test/mv/*: clean up $other_partition_tmpdir in all cases
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ls: when both -l and --dereference-command-line-symlink-to-dir are
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specified, consider whether to let the latter select whether to
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dereference command line symlinks to directories. Since -l has
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an implicit --NO-dereference-command-line-symlink-to-dir meaning.
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Pointed out by Karl Berry.
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A more efficient version of factor, and possibly one that
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accepts inputs of size 2^64 and larger.
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Re-add a separate test for du's stack space usage (like the one removed
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from tests/rm/deep-1).
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dd: consider adding an option to suppress `bytes/block read/written'
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output to stderr. Suggested here:
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http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=165045
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Pending copyright papers:
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------------------------
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ls --color: Ed Avis' patch to suppress escape sequences for
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non-highlighted files
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getpwnam from Bruce Korb
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pb (progress bar) from Miika Pekkarinen
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Look into improving the performance of md5sum.
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`openssl md5' is consistently about 30% faster than md5sum on an idle
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AMD 2000-XP system with plenty of RAM and a 261 MB input file.
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openssl's md5 implementation is in assembly, generated by a perl script.
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