piactl: add page (#4375)

pages/common/piactl.md

@@ -0,0 +1,36 @@
+# piactl
+
+> The command line tool for Private Internet Access, a commercial VPN provider.
+> More information: <https://privateinternetaccess.com/helpdesk/kb/articles/pia-desktop-command-line-interface>.
+
+- Log in to Private Internet Access:
+
+`piactl login {{path/to/login_file}}`
+
+- Connect to Private Internet Access:
+
+`piactl connect`
+
+- Disconnect from Private Internet Access:
+
+`piactl disconnect`
+
+- Enable or disable the Private Internet Access daemon in the background:
+
+`piactl background {{enable|disable}}`
+
+- List all available VPN regions:
+
+`piactl get regions`
+
+- Display the current VPN region:
+
+`piactl get region`
+
+- Set your VPN region:
+
+`piactl set region {{region}}`
+
+- Log out of Private Internet Access:
+
+`piactl logout`