The department does nightly backups of most filesystems between 12am and 8am. Basically, these are just copies of the filesystem at the point in time that the dump is done. We do not do complete filesystem dumps of all the filesystems every night, but incremental dumps of what has changed since the previous backup.
In order to have something restored, simply run the request_restore command. This will prompt you for the necessary information, and automatically send an email message to staff.
If you prefer a web page, you can go to the online request_restore form. Note that you must be coming from within the department to access this form.
If you need a file restored from your junkfood account, you can do Junkfood home directories are kept on the CS Department RAID. Our RAID keeps automatic hourly and nightly backups of junkfood homedirs. To access these backups, just `cd .snapshot` in the directory where the file formerly resided. In this you will see a listing such as:
hourly.0/ hourly.3/ nightly.2/ nightly.5/ hourly.1/ nightly.0/ nightly.3/ nightly.6/ hourly.2/ nightly.1/ nightly.4/The lowest extension will be the most recent backup. (.0 was the last backup, up to .6 which was the most distant backup). In addition, you can check the timestamps on the snapshot directories to determine which was created most recently.