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.

4 files changed, 6 insertions, 7 deletions

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));
             }