maint: modernize URLs

A lot of this is converting http: to https:.
Also, gmane went away, so remove URLs that no longer work and
are not easy to figure out what they were.
Some of this stuff is so old that it no longer matters anyway.

24 files changed, 69 insertions, 107 deletions

diff --git a/HACKING b/HACKING
index 2b02b337e..07d82253a 100644
--- a/HACKING
+++ b/HACKING
@@ -9,7 +9,7 @@ On Debian-based ones install the "git-core" package.
 Then run "git --version".  If that says it's older than
 version 1.4.4, then you'd do well to get a newer version.
 At worst, just download the latest stable release from
-http://git.or.cz/ and build from source.
+https://git-scm.com/ and build from source.
 
 For details on building the programs in this package, see
 the file, README-hacking.
@@ -224,7 +224,7 @@ keep the maximum line length at 72 or smaller, so that the generated
 ChangeLog lines, each with its leading TAB, will not exceed 80 columns.
 As for the ChangeLog-style content, please follow these guidelines:
 
-  http://www.gnu.org/software/guile/changelogs/guile-changelogs_3.html
+  https://www.gnu.org/prep/standards/standards.html#Change-Logs
 
 Try to make the summary line fit one of the following forms:
 
@@ -389,7 +389,7 @@ Send patches to the address listed in --help output
 Please follow the guidelines in the "Sending your patches." section of
 git's own SubmittingPatches:
 
-  http://git.kernel.org/?p=git/git.git;a=blob;f=Documentation/SubmittingPatches
+  https://github.com/git/git/blob/master/Documentation/SubmittingPatches
 
 
 Add documentation
@@ -406,7 +406,7 @@ active voice, not a passive one.  I.e., say "print the frobnozzle",
 not "the frobnozzle will be printed".
 
 Please add comments per the GNU Coding Standard:
-  http://www.gnu.org/prep/standards/html_node/Comments.html
+  https://www.gnu.org/prep/standards/html_node/Comments.html
 
 
 Minor syntactic preferences
@@ -418,7 +418,7 @@ Minor syntactic preferences
  character ;-) ]
 In writing arithmetic comparisons, use "<" and "<=" rather than
 ">" and ">=".  For some justification, read this:
-  http://thread.gmane.org/gmane.comp.version-control.git/3903/focus=4126
+  http://www.gelato.unsw.edu.au/archives/git/0505/4507.html
 
 const placement:
 Write "Type const *var", not "const Type *var".
@@ -480,18 +480,18 @@ The forms to choose from are in gnulib's doc/Copyright/ directory.
 If you want to assign a single change, you should use the file,
 doc/Copyright/request-assign.changes:
 
-    http://www.gnu.org/software/gnulib/Copyright/request-assign.changes
+    https://www.gnu.org/software/gnulib/Copyright/request-assign.changes
 
 If you would like to assign past and future contributions to a project,
 you'd use doc/Copyright/request-assign.future:
 
-    http://www.gnu.org/software/gnulib/Copyright/request-assign.future
+    https://www.gnu.org/software/gnulib/Copyright/request-assign.future
 
 You may make assignments for up to four projects at a time.
 
 In case you're wondering why we bother with all of this, read this:
 
-    http://www.gnu.org/licenses/why-assign.html
+    https://www.gnu.org/licenses/why-assign.html
 
 
 Run "make syntax-check", or even "make distcheck"
@@ -526,7 +526,7 @@ to configure your editor to highlight any offending characters in the
 files you edit.  If you use Emacs, customize its font-lock mode
 or use its WhiteSpace mode:
 
-    http://www.emacswiki.org/emacs/WhiteSpace
+    https://www.emacswiki.org/emacs/WhiteSpace
 
 If you use vim, add this to ~/.vimrc:
 
diff --git a/README b/README
index ebc355b3c..5cb90d38d 100644
--- a/README
+++ b/README
@@ -57,29 +57,6 @@ files (man/*.x) are welcome.  However, the authoritative documentation
 is in texinfo form in the doc directory.
 
 
-*********************************************
-On Mac OS X 10.5.1 (Darwin 9.1), test failure
----------------------------------------------
-
-Mac OS X 10.5.1 (Darwin 9.1) provides only partial (and incompatible)
-ACL support, so although "./configure && make" succeeds, "make check"
-exposes numerous failures.  The solution is to turn off ACL support
-manually via "./configure --disable-acl".  For details, see
-<http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/12292/focus=12318>.
-
-
-*****************************************
-Test failure with NLS and gettext <= 0.17
------------------------------------------
-
-Due to a conflict between libintl.h and gnulib's new xprintf module,
-when you configure with NLS support, and with a gettext installation
-older than 0.17.1 (not yet released, at the time of this writing),
-then some tests fail, at least on NetBSD 1.6.  To work around it in
-the mean time, you can configure with --disable-nls.  For details,
-see <http://thread.gmane.org/gmane.comp.lib.gnulib.bugs/12015/>.
-
-
 *********************
 Pre-C99 build failure
 ---------------------
@@ -210,7 +187,7 @@ coreutils@gnu.org including as much description and justification
 as you can.  Based on the feedback that generates, you may be able to
 convince us that it's worth adding.  Please also consult the list of
 previously discussed but ultimately rejected feature requests at:
-http://www.gnu.org/software/coreutils/rejected_requests.html
+https://www.gnu.org/software/coreutils/rejected_requests.html
 
 
 WARNING:  Now that we use the ./bootstrap script, you should not run
@@ -229,8 +206,8 @@ When reporting bugs, please include in the subject line both the package
 name/version and the name of the program for which you found a problem.
 
 For general documentation on the coding and usage standards
-this distribution follows, see the GNU Coding Standards,
-http://www.gnu.org/prep/standards_toc.html.
+this distribution follows, see the GNU Coding Standards at:
+https://www.gnu.org/prep/standards/
 
 For any copyright year range specified as YYYY-ZZZZ in this package
 note that the range specifies every single year in that closed interval.
diff --git a/README-hacking b/README-hacking
index 998a877b7..6e4767f38 100644
--- a/README-hacking
+++ b/README-hacking
@@ -72,7 +72,7 @@ if the problem seems to originate in a gnulib-provided file.
 If you develop a fix or a new feature, please send it to the
 appropriate bug-reporting address as reported by the --help option of
 each program.  One way to do this is to use vc-dwim
-<http://www.gnu.org/software/vc-dwim/>), as follows.
+<https://www.gnu.org/software/vc-dwim/>), as follows.
 
   Run the command "vc-dwim --help", copy its definition of the
   "git-changelog-symlink-init" function into your shell, and then run
@@ -80,7 +80,7 @@ each program.  One way to do this is to use vc-dwim
 
   Edit the (empty) ChangeLog file that this command creates, creating a
   properly-formatted entry according to the GNU coding standards
-  <http://www.gnu.org/prep/standards/html_node/Change-Logs.html>.
+  <https://www.gnu.org/prep/standards/html_node/Change-Logs.html>.
 
   Make your changes.
 
diff --git a/README-package-renamed-to-coreutils b/README-package-renamed-to-coreutils
index 5030f87d7..081b2d45e 100644
--- a/README-package-renamed-to-coreutils
+++ b/README-package-renamed-to-coreutils
@@ -1,21 +1,13 @@
-As of 2002-09-01, the GNU fileutils, textutils, and sh-utils
-packages have been merged into one, called the GNU coreutils.
-See http://www.gnu.org/software/coreutils/ for a description.
+On 2002-09-01, the GNU fileutils, textutils, and sh-utils
+packages were merged into one, called the GNU coreutils.
+See https://www.gnu.org/software/coreutils/coreutils.html for a description.
 Here's the FAQ list:
 
-  http://www.gnu.org/software/coreutils/faq/
+  https://www.gnu.org/software/coreutils/faq/
 
 For information on the mailing lists associated with the
-coreutils package, see these:
+coreutils package, including archive locations, see these:
 
-  http://mail.gnu.org/mailman/listinfo/coreutils-announce
-  http://mail.gnu.org/mailman/listinfo/bug-coreutils
-  http://mail.gnu.org/mailman/listinfo/coreutils
-
-mailing list archives are here:
-
-  http://news.gmane.org/gmane.comp.gnu.coreutils.announce
-  http://news.gmane.org/gmane.comp.gnu.core-utils.bugs (up to the minute)
-  http://mail.gnu.org/pipermail/bug-coreutils/ (updated every 12 hours)
-  http://news.gmane.org/gmane.comp.gnu.coreutils.general
-  http://mail.gnu.org/pipermail/coreutils/ (updated every 12 hours)
+  https://lists.gnu.org/mailman/listinfo/coreutils-announce
+  https://lists.gnu.org/mailman/listinfo/bug-coreutils
+  https://lists.gnu.org/mailman/listinfo/coreutils
diff --git a/README-prereq b/README-prereq
index 099fc0186..f939f78c1 100644
--- a/README-prereq
+++ b/README-prereq
@@ -1,17 +1,17 @@
 This gives some notes on obtaining the tools required for development.
 I.e., the tools checked for by the bootstrap script and include:
 
-- Autoconf  <http://www.gnu.org/software/autoconf/>
-- Automake  <http://www.gnu.org/software/automake/>
-- Bison     <http://www.gnu.org/software/bison/>
-- Gettext   <http://www.gnu.org/software/gettext/>
-- Git       <http://git.or.cz/>
-- Gperf     <http://www.gnu.org/software/gperf/>
-- Gzip      <http://www.gnu.org/software/gzip/>
+- Autoconf  <https://www.gnu.org/software/autoconf/>
+- Automake  <https://www.gnu.org/software/automake/>
+- Bison     <https://www.gnu.org/software/bison/>
+- Gettext   <https://www.gnu.org/software/gettext/>
+- Git       <https://git-scm.com/>
+- Gperf     <https://www.gnu.org/software/gperf/>
+- Gzip      <https://www.gnu.org/software/gzip/>
 - Perl      <http://www.cpan.org/>
-- Rsync     <http://samba.anu.edu.au/rsync/>
-- Tar       <http://www.gnu.org/software/tar/>
-- Texinfo   <http://www.gnu.org/software/texinfo/>
+- Rsync     <https://rsync.samba.org/>
+- Tar       <https://www.gnu.org/software/tar/>
+- Texinfo   <https://www.gnu.org/software/texinfo/>
 
 Note please try to install/build official packages for your system.
 If these programs are not available use the following instructions
diff --git a/README-release b/README-release
index 88356bcad..967a19013 100644
--- a/README-release
+++ b/README-release
@@ -134,11 +134,11 @@ Once all the builds and tests have passed,
 * Send the announcement email message (signed with the release key)
 
 * Approve the announcement here:
-  http://lists.gnu.org/mailman/admindb/coreutils-announce
+  https://lists.gnu.org/mailman/admindb/coreutils-announce
 
 * After each non-alpha release, update the on-line manual accessible via
 
-    http://www.gnu.org/software/coreutils/manual/
+    https://www.gnu.org/software/coreutils/manual/
 
   by running this:
 
diff --git a/configure.ac b/configure.ac
index b009a906d..a13295aa1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -142,7 +142,7 @@ if test "$gl_gcc_warnings" = yes; then
 
   # Using -Wstrict-overflow is a pain, but the alternative is worse.
   # For an example, see the code that provoked this report:
-  # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
+  # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33498
   # Code like that still infloops with gcc-4.6.0 and -O2.  Scary indeed.
 
   gl_MANYWARN_ALL_GCC([ws])
diff --git a/doc/coreutils.texi b/doc/coreutils.texi
index 2da543cc2..64243a633 100644
--- a/doc/coreutils.texi
+++ b/doc/coreutils.texi
@@ -2194,7 +2194,7 @@ base64 --decode [@var{option}]@dots{} [@var{file}]
 The base64 encoding expands data to roughly 133% of the original.
 The base32 encoding expands data to roughly 160% of the original.
 The format conforms to
-@uref{ftp://ftp.rfc-editor.org/in-notes/rfc4648.txt, RFC 4648}.
+@uref{https://tools.ietf.org/search/rfc4648, RFC 4648}.
 
 The program accepts the following options.  Also see @ref{Common options}.
 
@@ -8919,7 +8919,7 @@ tape=/dev/rmt/0
 For failing disks, other tools come with a great variety of extra
 functionality to ease the saving of as much data as possible before the
 disk finally dies, e.g.
-@uref{http://www.gnu.org/software/ddrescue/, GNU @command{ddrescue}}.
+@uref{https://www.gnu.org/software/ddrescue/, GNU @command{ddrescue}}.
 However, in some cases such a tool is not available or the administrator
 feels more comfortable with the handling of @command{dd}.
 As a simple rescue method, call @command{dd} as shown in the following
@@ -9502,7 +9502,7 @@ This uses many overwrite passes, with the data patterns chosen to
 maximize the damage they do to the old data.  While this will work on
 floppies, the patterns are designed for best effect on hard drives.
 For more details, see the source code and Peter Gutmann's paper
-@uref{http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html,
+@uref{https://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html,
 @cite{Secure Deletion of Data from Magnetic and Solid-State Memory}},
 from the proceedings of the Sixth USENIX Security Symposium (San Jose,
 California, July 22--25, 1996).
@@ -13144,7 +13144,7 @@ you often want to verify its signature or checksum right away.
 The inefficient way to do it is simply:
 
 @example
-wget http://example.com/some.iso && sha1sum some.iso
+wget https://example.com/some.iso && sha1sum some.iso
 @end example
 
 One problem with the above is that it makes you wait for the
@@ -13158,7 +13158,7 @@ free, because the entire process parallelizes so well:
 
 @example
 # slightly contrived, to demonstrate process substitution
-wget -O - http://example.com/dvd.iso \
+wget -O - https://example.com/dvd.iso \
   | tee >(sha1sum > dvd.sha1) > dvd.iso
 @end example
 
@@ -13184,7 +13184,7 @@ Since the above example writes to one file and one process,
 a more conventional and portable use of @command{tee} is even better:
 
 @example
-wget -O - http://example.com/dvd.iso \
+wget -O - https://example.com/dvd.iso \
   | tee dvd.iso | sha1sum > dvd.sha1
 @end example
 
@@ -13193,7 +13193,7 @@ computing MD5 and SHA1 checksums in parallel.  In this case,
 process substitution is required:
 
 @example
-wget -O - http://example.com/dvd.iso \
+wget -O - https://example.com/dvd.iso \
   | tee >(sha1sum > dvd.sha1) \
         >(md5sum > dvd.md5) \
   > dvd.iso
@@ -14277,7 +14277,7 @@ May be negated.
 @opindex extproc
 Enable @samp{LINEMODE}, which is used to avoid echoing
 each character over high latency links.  See also
-@uref{ftp://ftp.rfc-editor.org/in-notes/rfc1116.txt, Internet RFC 1116}.
+@uref{https://tools.ietf.org/search/rfc1116, Internet RFC 1116}.
 Non-POSIX@.
 May be negated.
 
@@ -15516,16 +15516,16 @@ For example:
 Fri, 09 Sep 2005 13:51:39 -0700
 @end example
 
-This format conforms to
-@uref{ftp://ftp.rfc-editor.org/in-notes/rfc2822.txt, Internet
-RFCs 2822} and
-@uref{ftp://ftp.rfc-editor.org/in-notes/rfc822.txt, 822}, the
+This format conforms to Internet RFCs
+@uref{https://tools.ietf.org/search/rfc5322, 5322},
+@uref{https://tools.ietf.org/search/rfc2822, 822} and
+@uref{https://tools.ietf.org/search/rfc822, 822}, the
 current and previous standards for Internet email.
 
 @item --rfc-3339=@var{timespec}
 @opindex --rfc-3339=@var{timespec}
 Display the date using a format specified by
-@uref{ftp://ftp.rfc-editor.org/in-notes/rfc3339.txt, Internet
+@uref{https://tools.ietf.org/search/rfc3339, Internet
 RFC 3339}.  This is a subset of the ISO 8601
 format, except that it also permits applications to use a space rather
 than a @samp{T} to separate dates from times.
@@ -18212,10 +18212,9 @@ Know your toolbox!  Use each program appropriately.  If you don't have an
 appropriate tool, build one.
 @end enumerate
 
-As of this writing, all the programs discussed are available from
-@uref{http://ftp.gnu.org/old-gnu/textutils/textutils-1.22.tar.gz},
-with more recent versions available from
-@uref{http://ftp.gnu.org/gnu/coreutils}.
+All the programs discussed are available as described in
+@uref{https://www.gnu.org/software/coreutils/coreutils.html,
+GNU core utilities}.
 
 None of what I have presented in this column is new.  The Software Tools
 philosophy was first introduced in the book @cite{Software Tools}, by
@@ -18235,7 +18234,7 @@ reading if you're a programmer.  They certainly made a major change in
 how I view programming.
 
 The programs in both books are available from
-@uref{http://cm.bell-labs.com/who/bwk, Brian Kernighan's home page}.
+@uref{https://www.cs.princeton.edu/~bwk/, Brian Kernighan's home page}.
 For a number of years, there was an active
 Software Tools Users Group, whose members had ported the original
 @command{ratfor} programs to essentially every computer system with a
diff --git a/init.cfg b/init.cfg
index df7559e98..2f747a349 100644
--- a/init.cfg
+++ b/init.cfg
@@ -627,7 +627,7 @@ skip_if_setgid_()
 # Skip if files are created with a different group to the current user
 # This can happen due to a setgid dir, or by some other mechanism on OS X:
 # http://unix.stackexchange.com/q/63865
-# http://bugs.gnu.org/14024#41
+# https://bugs.gnu.org/14024#41
 skip_if_nondefault_group_()
 {
   touch grp.$$
diff --git a/m4/xattr.m4 b/m4/xattr.m4
index 340cec8de..4e0399be4 100644
--- a/m4/xattr.m4
+++ b/m4/xattr.m4
@@ -7,7 +7,6 @@
 # with or without modifications, as long as this notice is preserved.
 
 # Originally written by Andreas Gruenbacher.
-# http://www.suse.de/~agruen/coreutils/5.91/coreutils-xattr.diff
 
 AC_DEFUN([gl_FUNC_XATTR],
 [
diff --git a/man/help2man b/man/help2man
index 1f90bc537..773de0fc9 100755
--- a/man/help2man
+++ b/man/help2man
@@ -780,7 +780,7 @@ sub convert_option
 }
 
 # Insert spacing escape characters \, and \/ before and after italic text.  See
-# http://www.gnu.org/software/groff/manual/html_node/Ligatures-and-Kerning.html
+# https://www.gnu.org/software/groff/manual/html_node/Ligatures-and-Kerning.html
 sub fix_italic_spacing
 {
     local $_ = shift;
diff --git a/src/dircolors.hin b/src/dircolors.hin
index 7ed59e2c7..c560c2a6f 100644
--- a/src/dircolors.hin
+++ b/src/dircolors.hin
@@ -176,7 +176,7 @@ EXEC 01;32
 .cgm 01;35
 .emf 01;35
 
-# http://wiki.xiph.org/index.php/MIME_Types_and_File_Extensions
+# https://wiki.xiph.org/MIME_Types_and_File_Extensions
 .ogv 01;35
 .ogx 01;35
 
@@ -194,7 +194,7 @@ EXEC 01;32
 .ra 00;36
 .wav 00;36
 
-# http://wiki.xiph.org/index.php/MIME_Types_and_File_Extensions
+# https://wiki.xiph.org/MIME_Types_and_File_Extensions
 .oga 00;36
 .opus 00;36
 .spx 00;36
diff --git a/src/ls.c b/src/ls.c
index 556313c71..73498181e 100644
--- a/src/ls.c
+++ b/src/ls.c
@@ -113,7 +113,7 @@
 
 /* Include <sys/capability.h> last to avoid a clash of <sys/types.h>
    include guards with some premature versions of libcap.
-   For more details, see <http://bugzilla.redhat.com/483548>.  */
+   For more details, see <https://bugzilla.redhat.com/483548>.  */
 #ifdef HAVE_CAP
 # include <sys/capability.h>
 #endif
diff --git a/src/shred.c b/src/shred.c
index 24e461a13..a317c4439 100644
--- a/src/shred.c
+++ b/src/shred.c
@@ -28,7 +28,7 @@
  *
  * For the theory behind this, see "Secure Deletion of Data from Magnetic
  * and Solid-State Memory", on line at
- * http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html
+ * https://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html
  *
  * Just for the record, reversing one or two passes of disk overwrite
  * is not terribly difficult with hardware help.  Hook up a good-quality
@@ -379,8 +379,7 @@ direct_mode (int fd, bool enable)
     }
 
 #if HAVE_DIRECTIO && defined DIRECTIO_ON && defined DIRECTIO_OFF
-  /* This is Solaris-specific.  See the following for details:
-     http://docs.sun.com/db/doc/816-0213/6m6ne37so?q=directio&a=view  */
+  /* This is Solaris-specific.  */
   directio (fd, enable ? DIRECTIO_ON : DIRECTIO_OFF);
 #endif
 }
diff --git a/src/tail.c b/src/tail.c
index d679a8773..9c31962d1 100644
--- a/src/tail.c
+++ b/src/tail.c
@@ -1956,7 +1956,7 @@ tail_file (struct File_spec *f, uintmax_t n_units)
             {
               /* Note: we must use read_pos here, not stats.st_size,
                  to avoid a race condition described by Ken Raeburn:
-        http://mail.gnu.org/archive/html/bug-textutils/2003-05/msg00007.html */
+         http://lists.gnu.org/archive/html/bug-textutils/2003-05/msg00007.html */
               record_open_fd (f, fd, read_pos, &stats, (is_stdin ? -1 : 1));
               f->remote = fremote (fd, pretty_name (f));
             }
diff --git a/tests/cp/preserve-link.sh b/tests/cp/preserve-link.sh
index 85de148e7..19ee51742 100755
--- a/tests/cp/preserve-link.sh
+++ b/tests/cp/preserve-link.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-# Exercise the fix for http://debbugs.gnu.org/8419
+# Exercise the fix for https://bugs.gnu.org/8419
 
 # Copyright (C) 2011-2017 Free Software Foundation, Inc.
 
diff --git a/tests/cp/sparse-fiemap.sh b/tests/cp/sparse-fiemap.sh
index a504cd9d9..74657a48e 100755
--- a/tests/cp/sparse-fiemap.sh
+++ b/tests/cp/sparse-fiemap.sh
@@ -26,8 +26,6 @@ touch fiemap_chk
 if fiemap_capable_ fiemap_chk && ! df -t ext3 . >/dev/null; then
   : # Current partition has working extents.  Good!
 else
-  # FIXME: temporarily(?) skip this variant, at least until after this bug
-  # is fixed: http://thread.gmane.org/gmane.comp.file-systems.ext4/24495
   skip_ "current file system has insufficient FIEMAP support"
 
   # It's not;  we need to create one, hence we need root access.
diff --git a/tests/misc/ls-time.sh b/tests/misc/ls-time.sh
index d42eb24a2..5149187a1 100755
--- a/tests/misc/ls-time.sh
+++ b/tests/misc/ls-time.sh
@@ -112,7 +112,7 @@ else
 failed ls ctime test -- this failure is expected at least for SunOS4.1.4
 and for tmpfs file systems on Solaris 5.5.1.
 It is also expected to fail on a btrfs file system until
-http://bugzilla.redhat.com/591068 is addressed.
+https://bugzilla.redhat.com/591068 is addressed.
 
 In the output below, 'c' should have had a ctime more recent than
 that of 'a', but does not.
diff --git a/tests/misc/printf-surprise.sh b/tests/misc/printf-surprise.sh
index 53581617d..2edd34ca1 100755
--- a/tests/misc/printf-surprise.sh
+++ b/tests/misc/printf-surprise.sh
@@ -51,7 +51,7 @@ vm=$(get_min_ulimit_v_ env $prog %20f 0) \
 mkfifo_or_skip_ fifo
 
 # Disable MALLOC_PERTURB_, to avoid triggering this bug
-# http://bugs.debian.org/481543#77
+# https://bugs.debian.org/481543#77
 export MALLOC_PERTURB_=0
 
 # Terminate any background process
diff --git a/tests/misc/seq-long-double.sh b/tests/misc/seq-long-double.sh
index 4eca0a757..f202046f7 100755
--- a/tests/misc/seq-long-double.sh
+++ b/tests/misc/seq-long-double.sh
@@ -23,8 +23,7 @@ print_ver_ seq
 getlimits_
 
 # Run this test only with glibc and sizeof (long double) > sizeof (double).
-# Otherwise, there are known failures:
-# http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/14939/focus=14944
+# Otherwise, there are known failures.
 cat <<\EOF > long.c
 #include <features.h>
 #if defined __GNU_LIBRARY__ && __GLIBC__ >= 2
diff --git a/tests/misc/sha1sum-vec.pl b/tests/misc/sha1sum-vec.pl
index 88d31a2fe..26f91c775 100755
--- a/tests/misc/sha1sum-vec.pl
+++ b/tests/misc/sha1sum-vec.pl
@@ -24,7 +24,7 @@ use strict;
 @ENV{qw(LANGUAGE LANG LC_ALL)} = ('C') x 3;
 
 # The data from which these tests were derived came from here:
-# http://csrc.nist.gov/cryptval/shs/sha1-vectors.zip
+# http://web.archive.org/web/20060505234703/http://csrc.nist.gov/cryptval/shs/sha1-vectors.zip
 
 my @Tests =
     (
diff --git a/tests/misc/sort-merge-fdlimit.sh b/tests/misc/sort-merge-fdlimit.sh
index 520d3aba6..71eb5ec44 100755
--- a/tests/misc/sort-merge-fdlimit.sh
+++ b/tests/misc/sort-merge-fdlimit.sh
@@ -57,7 +57,7 @@ done
 # ordinary redirection on the 'sort' command.  This is intended to
 # work around bugs in OpenBSD /bin/sh, and some other sh variants,
 # that squirrel away file descriptors before closing them; see
-# <http://lists.gnu.org/archive/html/bug-tar/2010-10/msg00075.html>.
+# <https://lists.gnu.org/archive/html/bug-tar/2010-10/msg00075.html>.
 # This test finds the bug only with shells that do not close FDs on
 # exec, and will miss the bug (if present) on other shells, but it's
 # not easy to fix this without running afoul of the OpenBSD-like sh bugs.
diff --git a/tests/misc/sort.pl b/tests/misc/sort.pl
index 4d6aff980..0fa1e9c12 100755
--- a/tests/misc/sort.pl
+++ b/tests/misc/sort.pl
@@ -317,7 +317,7 @@ my @Tests =
 ["22a", '-k 2,2fd -k 1,1r', {IN=>"3 b\n4 B\n"}, {OUT=>"4 B\n3 b\n"}],
 ["22b", '-k 2,2d  -k 1,1r', {IN=>"3 b\n4 b\n"}, {OUT=>"4 b\n3 b\n"}],
 
-# This fails in Fedora 20, per Göran Uddeborg in: http://bugs.gnu.org/18540
+# This fails in Fedora 20, per Göran Uddeborg in: https://bugs.gnu.org/18540
 ["23", '-s -k1,1 -t/', {IN=>"a b/x\na-b-c/x\n"}, {OUT=>"a b/x\na-b-c/x\n"},
  {ENV => "LC_ALL=$mb_locale"}],
 
@@ -383,8 +383,7 @@ my @Tests =
 ['obs-inval', '+1x', {EXIT=>2},
  {ERR=>"foo\n"}, {ERR_SUBST => 's/^$prog: .*/foo/'}],
 
-# Exercise the code that enlarges the line buffer.  See the thread here:
-# http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/11006
+# Exercise the code that enlarges the line buffer.
 ['realloc-buf', '-S1', {IN=>'a'x4000 ."\n"}, {OUT=>'a'x4000 ."\n"}],
 ['realloc-buf-2', '-S1', {IN=>'a'x5 ."\n"}, {OUT=>'a'x5 ."\n"}],
 
diff --git a/tests/misc/stty.sh b/tests/misc/stty.sh
index e549adb65..54404e1b7 100755
--- a/tests/misc/stty.sh
+++ b/tests/misc/stty.sh
@@ -61,7 +61,7 @@ for opt in $options; do
   # on Linux 2.2.0-pre4 kernels.  Also since around Linux 2.6.30
   # other serial control settings give the same error. So skip them.
   # Also on ppc*|sparc* glibc platforms 'icanon' gives the same error.
-  # See: http://debbugs.gnu.org/7228#14
+  # See: https://bugs.gnu.org/7228#14
   case $opt in
     parenb|parodd|cmspar) continue;;
     cstopb|crtscts|cdtrdsr|icanon) continue;;