diff --git a/knowledge base/authenticate without using sudo.md b/knowledge base/authenticate without using sudo.md
new file mode 100644
index 0000000..56f7d4a
--- /dev/null
+++ b/knowledge base/authenticate without using sudo.md	
@@ -0,0 +1,20 @@
+# Authenticate without using sudo
+
+## Polkit
+
+Requires [polkit] to be:
+
+- installed
+- configured to authorize and authenticate the users
+
+```shell
+pkexec COMMAND
+```
+
+## Further readings
+
+- [pkexec]
+- [How to get gui sudo password prompt without command line]
+
+[pkexec]: pkexec.md
+[how to get gui sudo password prompt without command line]: https://askubuntu.com/questions/515292/how-to-get-gui-sudo-password-prompt-without-command-line