fix self-upgrade and uninstall

bin/miaou-bash

@@ -637,8 +637,8 @@ function parse_options {
     case "$1" in
     --help) usage && builtin exit ;;
     --version) version && builtin exit ;;
-    --self-upgrade) self_upgrade && builtin exit ;;
-    --uninstall) uninstall && builtin exit ;;
+    --self-upgrade) SCRIPT="$MIAOU_BASH_DIR"/lib/self-upgrade.bash && return ;;
+    --uninstall) SCRIPT="$MIAOU_BASH_DIR"/lib/uninstall.bash && return ;;
     -*) >&2 echo "ERROR: option '$1' unknown!" && usage && builtin exit 2 ;;
     esac
   fi

lib/initiate.bash

@@ -205,7 +205,7 @@ function link_miaou_bash {
 
 function create_sudoers {
   if [[ ! -f /etc/sudoers.d/miaou-bash ]]; then
-    echo 'Defaults:%sudo env_keep += "MIAOU_BASH_DIR"' | sudo tee /etc/sudoers.d/miaou-bash
+    echo 'Defaults:%sudo env_keep += "MIAOU_BASH_DIR"' | sudo tee /etc/sudoers.d/miaou-bash >/dev/null
     sudo chmod 440 /etc/sudoers.d/miaou-bash
   fi
 }