i wrote a perl client, cj, that uses Curses::UI (ncurses). it has a builtin editor, handles moods, user pictures, shared journals, etc pretty well. it should be fairly intuitive to operate. on first run it will create a rc file mode 0600 which will store login information. you will want the server to be 'www.livejournal.com' and port '80' unless you use some other livejounral-like service.
it requires at least v0.71 of Curses::UI. it and the client can be found at http://cow.org/dev/lj/
it started as a rewrite of a non-curses client and then implimented cursres. i ended up doing it in two stages so if you read the code you will probably see two slightly different styles. that is where i had a epiphany and tried to make things more efficient.
have fun! if you enjoy it, i'd like to hear some feedback, bug reports, or feature requests.