All the blogging without the bloat

Microblogger
"MicroBlogger is a fast, flexible, secure, reliable, and bloat-free weblog engine written entirely in Bash script. It is designed to have absolutely no dependencies on any outside programs--no PHP, no SQL, no CGI, no CSS, no JavaScript, no Perl, no XML, no DHTML, nothing. MicroBlogger is completely self-contained and self-regulating, and is ready for you to use straight out of the box."