makepasswd: add page (#3566)

pages/common/makepasswd.md

@@ -0,0 +1,20 @@
+# makepasswd
+
+> Generate and encrypt passwords.
+> More information: <https://manpages.debian.org/stretch/makepasswd/makepasswd.1.en.html>.
+
+- Generate a random password (8 to 10 characters long, containing letters and numbers):
+
+`makepasswd`
+
+- Generate a 10 characters long password:
+
+`makepasswd --chars {{10}}`
+
+- Generate a 5 to 10 characters long password:
+
+`makepasswd --minchars {{5}} --maxchars {{10}}`
+
+- Generate a password containing only the characters "b", "a" or "r":
+
+`makepasswd --string {{bar}}`