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Once logged in to ftp-osl.osuosl.org please read ~/README-NETBEANS.txt in the $HOME directory for further instructions on syncing.
$ scp -i ~/.ssh/ftp-osl-osuosl /path/to/file netbeans@ftp-osl.osuosl.org:/path/to/binaries/directory
Browsing binaries
You can browse the current list of binaries visiting this link with a browser: http://netbeans.osuosl.org/binaries/
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