doc: fix URLs

25 files changed, 41 insertions, 41 deletions

diff --git a/doc/s6-basename.html b/doc/s6-basename.html
index e67f3da..30c43b7 100644
--- a/doc/s6-basename.html
+++ b/doc/s6-basename.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-basename acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/basename.html">basename</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/basename.html">basename</a> utility.
 </p>
 
 <h2> Extra options </h2>
@@ -43,7 +43,7 @@
 
 <p>
  s6-basename <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/basename.html">basename</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/basename.html">basename</a>
 program.
 </p>
 
diff --git a/doc/s6-cat.html b/doc/s6-cat.html
index d4a7550..3f41b6e 100644
--- a/doc/s6-cat.html
+++ b/doc/s6-cat.html
@@ -44,7 +44,7 @@ s6-cat performs zero-copy transfer.
 
 <p>
  s6-cat <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/cat.html">cat</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/cat.html">cat</a>
 program.
 </p>
 
diff --git a/doc/s6-chmod.html b/doc/s6-chmod.html
index 78788da..c987e81 100644
--- a/doc/s6-chmod.html
+++ b/doc/s6-chmod.html
@@ -38,7 +38,7 @@ must be an absolute octal number such as 0755 for
 
 <p>
  s6-chmod <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/chmod.html">chmod</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/chmod.html">chmod</a>
 program.
 </p>
 
diff --git a/doc/s6-chown.html b/doc/s6-chown.html
index 56b24c9..5de306b 100644
--- a/doc/s6-chown.html
+++ b/doc/s6-chown.html
@@ -45,7 +45,7 @@ gid to <em>account</em>'s. </li>
 
 <p>
  s6-chown <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/chown.html">chown</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/chown.html">chown</a>
 program.
 </p>
 
diff --git a/doc/s6-cut.html b/doc/s6-cut.html
index c42954e..f9728a0 100644
--- a/doc/s6-cut.html
+++ b/doc/s6-cut.html
@@ -30,14 +30,14 @@
 
 <p>
  s6-cut acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/cut.html">cut</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/cut.html">cut</a> utility.
 </p>
 
 <h2> Posixness </h2>
 
 <p>
  s6-cut <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/cut.html">cut</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/cut.html">cut</a>
 program.
 </p>
 
diff --git a/doc/s6-dirname.html b/doc/s6-dirname.html
index 2928ca9..e8f54ef 100644
--- a/doc/s6-dirname.html
+++ b/doc/s6-dirname.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-dirname acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/dirname.html">dirname</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/dirname.html">dirname</a> utility.
 </p>
 
 <h2> Extra options </h2>
@@ -43,7 +43,7 @@
 
 <p>
  s6-dirname <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/dirname.html">dirname</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/dirname.html">dirname</a>
 program.
 </p>
 
diff --git a/doc/s6-echo.html b/doc/s6-echo.html
index 1e0c4e0..7a2fa98 100644
--- a/doc/s6-echo.html
+++ b/doc/s6-echo.html
@@ -44,7 +44,7 @@ character instead of a space. </li>
 
 <p>
  s6-echo <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/echo.html">echo</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/echo.html">echo</a>
 program.
 </p>
 
diff --git a/doc/s6-env.html b/doc/s6-env.html
index 1d77d8f..4b1b75f 100644
--- a/doc/s6-env.html
+++ b/doc/s6-env.html
@@ -31,14 +31,14 @@ before running a program.
 
 <p>
  s6-env acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html">env</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html">env</a> utility.
 </p>
 
 <h2> Posixness </h2>
 
 <p>
  s6-env <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html">env</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/env.html">env</a>
 program.
 </p>
 
diff --git a/doc/s6-expr.html b/doc/s6-expr.html
index f0bdc7b..659e6f0 100644
--- a/doc/s6-expr.html
+++ b/doc/s6-expr.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-expr acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/expr.html">expr</a> utility,
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/expr.html">expr</a> utility,
 except that the <strong>:</strong> operator (pattern matching) is not supported.
 </p>
 
@@ -42,7 +42,7 @@ except that the <strong>:</strong> operator (pattern matching) is not supported.
 
 <p>
  s6-expr <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/expr.html">expr</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/expr.html">expr</a>
 program; however, if you are never using the pattern matching functionality, s6-expr
 scrupulously follows the rest of the specification.
 </p>
diff --git a/doc/s6-false.html b/doc/s6-false.html
index 780a34a..415e9ce 100644
--- a/doc/s6-false.html
+++ b/doc/s6-false.html
@@ -32,7 +32,7 @@
 
 <p>
  s6-false <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/false.html">false</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/false.html">false</a>
 program.
 </p>
 
diff --git a/doc/s6-grep.html b/doc/s6-grep.html
index 8600ff4..9e47c03 100644
--- a/doc/s6-grep.html
+++ b/doc/s6-grep.html
@@ -30,7 +30,7 @@
 
 <ul>
  <li> s6-grep compiles <em>pattern</em> as a
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03">Basic
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_03">Basic
 Regular Expression</a> </li>
  <li> It reads stdin and matches every line against this regexp </li>
  <li> If the line matches, it prints it to stdout </li>
@@ -44,7 +44,7 @@ otherwise. </li>
  <li> <tt>-F</tt>&nbsp;: <em>pattern</em> is not compiled as a BRE, but is
 interpreted as a literal string. </li>
  <li> <tt>-E</tt>&nbsp;: <em>pattern</em> is not compiled as a BRE, but as an
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04">Extended
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap09.html#tag_09_04">Extended
 Regular Expression</a> (ERE). </li>
  <li> <tt>-i</tt>&nbsp;: ignore case during the match </li>
  <li> <tt>-c</tt>&nbsp;: do not write normal output; only write the number of
@@ -60,7 +60,7 @@ match <em>pattern</em>). </li>
 
 <p>
  s6-grep <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html">grep</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/grep.html">grep</a>
 program.
 </p>
 
diff --git a/doc/s6-head.html b/doc/s6-head.html
index 80bc02b..18fadfc 100644
--- a/doc/s6-head.html
+++ b/doc/s6-head.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-head acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/head.html">head</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/head.html">head</a> utility.
 </p>
 
 <h2> Extra options </h2>
@@ -48,7 +48,7 @@ of <em>lines</em> lines. </li>
 
 <p>
  s6-head <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/head.html">head</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/head.html">head</a>
 program.
 </p>
 
diff --git a/doc/s6-hiercopy.html b/doc/s6-hiercopy.html
index a13e0e0..43fdc13 100644
--- a/doc/s6-hiercopy.html
+++ b/doc/s6-hiercopy.html
@@ -56,7 +56,7 @@ But then, <tt>cp</tt> shouldn't either. </li>
  <li> There is no standard way of creating device nodes on a
 filesystem, so any <tt>cp</tt>-like utility is inherently
 non-portable. Fortunately, most systems still agree on the non-portable usages of
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/mknod.html">mknod
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/functions/mknod.html">mknod
 specification</a>, so things should work in practice. Consequently,
 the s6-hiercopy utility has been moved from
 <a href="//skarnet.org/software/s6-linux-utils/">s6-linux-utils</a>
diff --git a/doc/s6-ln.html b/doc/s6-ln.html
index bddac32..59dbdca 100644
--- a/doc/s6-ln.html
+++ b/doc/s6-ln.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-ln acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html">ln</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html">ln</a> utility.
 </p>
 
 <h2> Options </h2>
@@ -48,7 +48,7 @@ it instead of adding a link in the directory </li>
 
 <p>
  s6-ln <strong>would be</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html">ln</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ln.html">ln</a>
 program, except that POSIX mandates that a preexisting <em>target</em> must first
 be <tt>unlink()</tt>ed and then (<tt>sym</tt>)<tt>link()</tt>ed, which prevents
 atomic replacements.
diff --git a/doc/s6-ls.html b/doc/s6-ls.html
index 9dabaf8..2732fde 100644
--- a/doc/s6-ls.html
+++ b/doc/s6-ls.html
@@ -50,7 +50,7 @@ not list <tt>.</tt> or <tt>..</tt> though. </li>
 
 <p>
  s6-ls <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html">ls</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/ls.html">ls</a>
 program.
 </p>
 
diff --git a/doc/s6-mkdir.html b/doc/s6-mkdir.html
index 0b9140d..9866720 100644
--- a/doc/s6-mkdir.html
+++ b/doc/s6-mkdir.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-mkdir acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkdir.html">mkdir</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkdir.html">mkdir</a> utility.
 </p>
 
 <h2> Extra options </h2>
@@ -43,7 +43,7 @@
 
 <p>
  s6-mkdir <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkdir.html">mkdir</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkdir.html">mkdir</a>
 program.
 </p>
 
diff --git a/doc/s6-mkfifo.html b/doc/s6-mkfifo.html
index 69208a0..801c3c4 100644
--- a/doc/s6-mkfifo.html
+++ b/doc/s6-mkfifo.html
@@ -30,14 +30,14 @@
 
 <p>
  s6-mkfifo acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkfifo.html">mkfifo</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkfifo.html">mkfifo</a> utility.
 </p>
 
 <h2> Posixness </h2>
 
 <p>
  s6-mkfifo <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkfifo.html">mkfifo</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/mkfifo.html">mkfifo</a>
 program.
 </p>
 
diff --git a/doc/s6-nice.html b/doc/s6-nice.html
index 8b3e89d..037088f 100644
--- a/doc/s6-nice.html
+++ b/doc/s6-nice.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-nice acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/nice.html">nice</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/nice.html">nice</a> utility.
 </p>
 
 <h2> Extra options </h2>
@@ -46,7 +46,7 @@ exit 111 with an error message.
 
 <p>
  s6-nice <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/nice.html">nice</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/nice.html">nice</a>
 program.
 </p>
 
diff --git a/doc/s6-sleep.html b/doc/s6-sleep.html
index d187f10..863e53c 100644
--- a/doc/s6-sleep.html
+++ b/doc/s6-sleep.html
@@ -30,7 +30,7 @@
 
 <ul>
  <li> s6-sleep acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sleep.html">sleep</a> utility.
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sleep.html">sleep</a> utility.
 It ignores non-lethal signals. </li>
  <li> If there are <em>prog...</em> arguments, then s6-sleep executes
 into <em>prog...</em> after sleeping. Else, it exits 0. </li>
@@ -46,7 +46,7 @@ into <em>prog...</em> after sleeping. Else, it exits 0. </li>
 
 <p>
  s6-sleep <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sleep.html">sleep</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sleep.html">sleep</a>
 program.
 </p>
 
diff --git a/doc/s6-sort.html b/doc/s6-sort.html
index 0f71538..ac069b0 100644
--- a/doc/s6-sort.html
+++ b/doc/s6-sort.html
@@ -52,7 +52,7 @@ instead of newlines </li>
 
 <p>
  s6-sort <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/sort.html">sort</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/sort.html">sort</a>
 program.
 </p>
 
diff --git a/doc/s6-tail.html b/doc/s6-tail.html
index 4ab340b..f905d4b 100644
--- a/doc/s6-tail.html
+++ b/doc/s6-tail.html
@@ -30,7 +30,7 @@
 
 <p>
  s6-tail acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/tail.html">tail</a> utility,
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/tail.html">tail</a> utility,
 except that the <strong>-f</strong> option is not supported.
 </p>
 
@@ -38,7 +38,7 @@ except that the <strong>-f</strong> option is not supported.
 
 <p>
  s6-tail <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/tail.html">tail</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/tail.html">tail</a>
 program; however, if you are never using the <tt>-f</tt> functionality, s6-tail
 scrupulously follows the rest of the specification.
 </p>
diff --git a/doc/s6-test.html b/doc/s6-test.html
index b79592c..3764a5c 100644
--- a/doc/s6-test.html
+++ b/doc/s6-test.html
@@ -31,7 +31,7 @@ exit status.
 
 <p>
  s6-test acts as the generic
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html">test</a> utility,
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html">test</a> utility,
 but it diverges from the specification on one point: if an argument starts with a backslash,
 this backslash is ignored (and the argument cannot be an operation). This is a simple
 disambiguation technique that has unfortunately not been chosen by the standard.
@@ -45,7 +45,7 @@ disambiguation technique that has unfortunately not been chosen by the standard.
 
 <p>
  s6-test <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html">test</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/test.html">test</a>
 program; however, if your arguments never start with a backslash, it exhibits the
 exact same behaviour.
 </p>
diff --git a/doc/s6-touch.html b/doc/s6-touch.html
index 35b4d55..2f00059 100644
--- a/doc/s6-touch.html
+++ b/doc/s6-touch.html
@@ -38,7 +38,7 @@ then closing them.
 
 <p>
  s6-touch <strong>is not</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/touch.html">touch</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/touch.html">touch</a>
 program.
 </p>
 
diff --git a/doc/s6-true.html b/doc/s6-true.html
index 54f6a0f..635c36b 100644
--- a/doc/s6-true.html
+++ b/doc/s6-true.html
@@ -32,7 +32,7 @@
 
 <p>
  s6-true <strong>is</strong> suitable as a Single Unix
-<a href="http://pubs.opengroup.org/onlinepubs/9699919799/utilities/false.html">true</a>
+<a href="https://pubs.opengroup.org/onlinepubs/9699919799/utilities/false.html">true</a>
 program.
 </p>
 
diff --git a/doc/s6-update-symlinks.html b/doc/s6-update-symlinks.html
index d7ece2f..f6a253d 100644
--- a/doc/s6-update-symlinks.html
+++ b/doc/s6-update-symlinks.html
@@ -30,8 +30,8 @@ shared.
 <p>
 <tt>s6-update-symlinks</tt> is useful when one wants to combine
 a logical package system, like Dan Bernstein's
-<a href="http://cr.yp.to/slashpackage.html"><tt>/package</tt></a> and
-<a href="http://cr.yp.to/slashcommand.html"><tt>/command</tt></a>, with
+<a href="https://cr.yp.to/slashpackage.html"><tt>/package</tt></a> and
+<a href="https://cr.yp.to/slashcommand.html"><tt>/command</tt></a>, with
 physical filesystem constraints, like <tt>/</tt>, <tt>/usr</tt> and
 <tt>/usr/local</tt> on separate filesystems.
 </p>