The local filesystems /spare on the Debian PCs are free and intended to store students files/directories for temporary use. Write permission is free, although the owner only can remove his files/dirs. Access the spare filesystem with the command cd:
cd /net/<hostname>/spare/<directory_name> e.g. cd /net/syko/spare/sirakis
Be aware that 1. we don't backup the content of these filesystems, and 2. once a week files bigger the 150 Mb are automatically removed.