1 restore djgpp, eventually
3 add unit tests for lib/*.c
5 strip: add an option to specify the program used to strip binaries.
6 suggestion from Karl Berry
9 Address this comment: FIXME: mv's behavior in this case is system-dependent
10 Better still: fix the code so it's *not* system-dependent.
12 implement --target-directory=DIR for install (per texinfo documentation)
14 ls: add --format=FORMAT option that controls how each line is printed.
16 cp --no-preserve=X should not attempt to preserve attribute X
17 reported by Andreas Schwab
19 copy.c: Address the FIXME-maybe comment in copy_internal.
20 And once that's done, add an exclusion so that `cp --link'
21 no longer incurs the overhead of saving src. dev/ino and dest. filename
24 See if we can be consistent about where --verbose sends its output:
25 These all send --verbose output to stdout:
26 head, tail, rm, cp, mv, ln, chmod, chown, chgrp, install, ln
27 These send it to stderr:
31 Write an autoconf test to work around build failure in HPUX's 64-bit mode.
32 See notes in README -- and remove them once there's a work-around.
34 Integrate use of sendfile, suggested here:
35 http://mail.gnu.org/archive/html/bug-fileutils/2003-03/msg00030.html
36 I don't plan to do that, since a few tests demonstrate no significant benefit.
38 Should printf '\0123' print "\n3"?
39 per report from TAKAI Kousuke on Mar 27
40 http://mail.gnu.org/archive/html/bug-coreutils/2003-03/index.html
42 printf: consider adapting builtins/printf.def from bash
44 df: add `--total' option, suggested here http://bugs.debian.org/186007
46 seq: give better diagnostics for invalid formats:
47 e.g. no or too many % directives
48 seq: consider allowing format string to contain no %-directives
50 m4: rename all macros that start with AC_ to start with another prefix
52 resolve RH report on cp -a forwarded by Tim Waugh
54 Martin Michlmayr's patch to provide ls with `--sort directory' option
56 tail: don't use xlseek; it *exits*.
57 Instead, maybe use a macro and return nonzero.
59 add mktemp? Suggested by Nelson Beebe
61 df: alignment problem of `Used' heading with e.g., -mP
62 reported by Karl Berry
64 tr: support nontrivial equivalence classes, e.g. [=e=] with LC_COLLATE=fr_FR
66 fix tail -f to work with named pipes; reported by Ian D. Allen
67 $ mkfifo j; tail -f j & sleep 1; echo x > j
68 ./tail: j: file truncated
69 ./tail: j: cannot seek to offset 0: Illegal seek
71 lib/strftime.c: Since %N is the only format that we need but that
72 glibc's strftime doesn't support, consider using a wrapper that
73 would expand /%(-_)?\d*N/ to the desired string and then pass the
74 resulting string to glibc's strftime.
76 sort: Compress temporary files when doing large external sort/merges.
77 This improves performance when you can compress/uncompress faster than
78 you can read/write, which is common in these days of fast CPUs.
79 suggestion from Charles Randall on 2001-08-10
81 sort: Add an ordering option -R that causes 'sort' to sort according
82 to a random permutation of the correct sort order. Also, add an
83 option --random-seed=SEED that causes 'sort' to use an arbitrary
84 string SEED to select which permutations to use, in a deterministic
85 manner: that is, if you sort a permutation of the same input file
86 with the same --random-seed=SEED option twice, you'll get the same
87 output. The default SEED is chosen at random, and contains enough
88 information to ensure that the output permutation is random.
89 suggestion from Feth AREZKI, Stephan Kasal, and Paul Eggert on 2003-07-17
91 unexpand: [http://www.opengroup.org/onlinepubs/007908799/xcu/unexpand.html]
92 printf 'x\t \t y\n'|unexpand -t 8,9 should print its input, unmodified.
93 printf 'x\t \t y\n'|unexpand -t 5,8 should print "x\ty\n"
95 Let GNU su use the `wheel' group if appropriate.
96 (there are a couple patches, already)
98 sort: Investigate better sorting algorithms; see Knuth vol. 3.
100 We tried list merge sort, but it was about 50% slower than the
101 recursive algorithm currently used by sortlines, and it used more
102 comparisons. We're not sure why this was, as the theory suggests it
103 should do fewer comparisons, so perhaps this should be revisited.
104 List merge sort was implemented in the style of Knuth algorithm
105 5.2.4L, with the optimization suggested by exercise 5.2.4-22. The
106 test case was 140,213,394 bytes, 426,4424 lines, text taken from the
107 GCC 3.3 distribution, sort.c compiled with GCC 2.95.4 and running on
108 Debian 3.0r1 GNU/Linux, 2.4GHz Pentium 4, single pass with no
109 temporary files and plenty of RAM.
111 Since comparisons seem to be the bottleneck, perhaps the best
112 algorithm to try next should be merge insertion. See Knuth section
113 5.3.1, who credits Lester Ford, Jr. and Selmer Johnson, American
114 Mathematical Monthly 66 (1959), 387-389.
116 cp --recursive: perform dir traversals in source and dest hierarchy rather
117 than forming full file names. The latter (current) approach fails
118 unnecessarily when the names become very long.
120 tail --p is now ambiguous
122 Remove suspicious uses of alloca (ones that may allocate more than
125 Adapt these contribution guidelines for coreutils:
126 http://sources.redhat.com/automake/contribute.html
129 Changes expected to go in, post-5.2.1:
130 ======================================
132 wc: add an option, --files0-from [as for du] to make it read NUL-delimited
133 file name arguments from a file.
135 dd patch from Olivier Delhomme
137 Apply Andreas Gruenbacher's ACL and xattr changes
139 Apply Bruno Haible's hostname changes
141 test/mv/*: clean up $other_partition_tmpdir in all cases
143 ls: when both -l and --dereference-command-line-symlink-to-dir are
144 specified, consider whether to let the latter select whether to
145 dereference command line symlinks to directories. Since -l has
146 an implicit --NO-dereference-command-line-symlink-to-dir meaning.
147 Pointed out by Karl Berry.
149 A more efficient version of factor, and possibly one that
150 accepts inputs of size 2^64 and larger.
152 Re-add a separate test for du's stack space usage (like the one removed
153 from tests/rm/deep-1).
155 dd: consider adding an option to suppress `bytes/block read/written'
156 output to stderr. Suggested here:
157 http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=165045
159 Pending copyright papers:
160 ------------------------
161 ls --color: Ed Avis' patch to suppress escape sequences for
162 non-highlighted files
164 getpwnam from Bruce Korb
166 pb (progress bar) from Miika Pekkarinen
168 Look into improving the performance of md5sum.
169 `openssl md5' is consistently about 30% faster than md5sum on an idle
170 AMD 2000-XP system with plenty of RAM and a 261 MB input file.
171 openssl's md5 implementation is in assembly, generated by a perl script.