systemd-escape: add page (#10937)

pages/linux/systemd-escape.md

@@ -0,0 +1,24 @@
+# systemd-escape
+
+> Escape strings for usage in systemd unit names.
+> More information: <https://www.freedesktop.org/software/systemd/man/systemd-escape.html>.
+
+- Escape the given text:
+
+`systemd-escape {{text}}`
+
+- Reverse the escaping process:
+
+`systemd-escape --unescape {{text}}`
+
+- Treat the given text as a path:
+
+`systemd-escape --path {{text}}`
+
+- Append the given suffix to the escaped text:
+
+`systemd-escape --suffix {{suffix}} {{text}}`
+
+- Use a template and inject the escaped text:
+
+`systemd-escape --template {{template}} {{text}}`