Add `status` verb

sshdpw

@@ -16,6 +16,9 @@ case "${1}" in
       FROM=no; TO=yes;
     fi
     ;;
+  status)
+    true
+    ;;
   *)
     echo 'Must specify one of the following:'
     echo '  [ on | yes | enable | unlock ] to allow interactive passwords'
@@ -27,7 +30,7 @@ case "${1}" in
 esac
 
 for OPTION in PasswordAuthentication KbdInteractiveAuthentication ChallengeResponseAuthentication; do
-  sed -i "s/#* *${OPTION} *${FROM}/${OPTION} ${TO}/g" /etc/ssh/sshd_config
+  [ -n "${FROM}" ] && sed -i "s/#* *${OPTION} *${FROM}/${OPTION} ${TO}/g" /etc/ssh/sshd_config
   grep "^#* *${OPTION} *\(yes\|no\)" /etc/ssh/sshd_config
 done