@gawbul — Thanks for those links. They had exactly what I needed to enable SFTP plugin updates on my WordPress installations.
Very cool. B-)
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BTW, looking at what needs to be done for this, it’s not WP that doesn’t support SFTP, but the standard PHP installation.
You essentially have to install an SSH2 package for PHP (b/c SFTP is file transfer over an SSH connection). Once that’s done, WP automatically detects that your PHP is SFTP enabled, and offers that as one of your plugin update options.
Weirdly enough, I’m looking for something similar in either WP or Drupal. This is what I’ve found so far:
http://www.alectang.com/wordpress-link-directory/
Good luck on your search. 🙂