Either way, it will prompt you for your Livejournal username and password,
then download all your journal entries, comments, and userpics.
+You may optionally download entries from a different journal (a community)
+where you are a member. If you are a community maintainer, you can also
+download comments from the community.
+
If you want to save your username and password so you don't have to type
it every time you run ljdump, you can save it in the configuration file.
password - The account password. This password is never sent in the
clear; the livejournal "challenge" password mechanism is used.
+ journal - Optional: The journal to download entries from. If this is
+ not specified, the "username" journal is downloaded. If this
+ is specified, then only the named journals will be downloaded
+ (this element may be specified more than once to download
+ multiple journals).
+
This program may be run as often as needed to bring the backup copy up
to date. Both new and updated items are downloaded.