systemctl-list-machines: add page (#19528)

Author: TheRootDaemon

pages/linux/systemctl-list-machines.md

@@ -0,0 +1,20 @@
+# systemctl list-machines
+
+> List the host and all running local virtual machines or containers with their state.
+> More information: <https://www.freedesktop.org/software/systemd/man/systemctl.html#list-machines%20PATTERN%E2%80%A6>.
+
+- Show all machines (host and running containers/VMs):
+
+`systemctl list-machines`
+
+- List a specific machine:
+
+`systemctl list-machines {{machine}}`
+
+- List multiple matching machines:
+
+`systemctl list-machines {{machine_1 machine_2 ...}}`
+
+- Filter machines using wildcard patterns ie, `shell-globbing`:
+
+`systemctl list-machines {{pattern}}`