virsh: add page (#3241)

pages/common/virsh.md

@@ -0,0 +1,37 @@
+# virsh
+
+> Manage virsh guest domains.
+> More information: <https://libvirt.org/virshcmdref.html>.
+> NOTE: 'guest_id' can be the id, name or UUID of the guest.
+
+- Connect to a hypervisor session:
+
+`virsh connect {{qemu://system}}`
+
+- List all domains:
+
+`virsh list --all`
+
+- Dump guest configuration file:
+
+`virsh dumpxml {{guest_id}} > {{path/to/guest.xml}}`
+
+- Create a guest from a configuration file:
+
+`virsh create {{path/to/config_file.xml}}`
+
+- Edit a guest's configuration file (editor can be changed with $EDITOR):
+
+`virsh edit {{guest_id}}`
+
+- Start/reboot/shutdown/suspend/resume a guest:
+
+`virsh {{command}} {{guest_id}}`
+
+- Save the current state of a guest to a file:
+
+`virsh save {{guest_id}} {{filename}}`
+
+- Delete a running guest:
+
+`virsh destroy {{guest_id}} && virsh undefine {{guest_id}}`