User:CliveJO
Create the images by running the following, where:
font is a path to some font, for instance AriBlk.TTF. wordlist is a path to some word list, for instance /usr/share/dict/words. (Note: on Debian/Ubuntu, the 'wbritish' and 'wamerican' packages provide such lists. On Fedora, use the 'words' package). key is the the exact passphrase you set $wgCaptchaSecret to. Use quotes if necessary. output is the path to where the images should be stored (defined in $wgCaptchaDirectory). count is how many images to generate.