From bfb365d92445f8ac0bb5c57106a8598dc5eb56d4 Mon Sep 17 00:00:00 2001
From: Christoph Anton Mitterer <mail@christoph.anton.mitterer.name>
Date: Fri, 31 Oct 2025 07:28:57 +0100
Subject: [PATCH] man: clarify quoting of `$` in command lines (#39494)

When the special executable prefix `:` is used, `$$` yield the literal `$$`.
---
 man/systemd.service.xml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/man/systemd.service.xml b/man/systemd.service.xml
index 125acae4d3..84dd17920a 100644
--- a/man/systemd.service.xml
+++ b/man/systemd.service.xml
@@ -1485,7 +1485,8 @@ ExecStart=/bin/echo $ONE $TWO $THREE</programlisting>
     <literal>too</literal>.
     </para>
 
-    <para>To pass a literal dollar sign, use <literal>$$</literal>.
+    <para>Unless for commands with the special executable prefix <literal>:</literal>,
+    to pass a literal dollar sign, use <literal>$$</literal>.
     Variables whose value is not known at expansion time are treated
     as empty strings. Note that the first argument (i.e. the program
     to execute) may not be a variable.</para>