Purdue University - Department of Computer Science - Instructional Lab Policies

Instructional Lab Policies

This policy document governs the use of the computer laboratories in rooms HAASG40, HAASG56, HAAS257, LWSNB146, LWSNB148, LWSNB158, and LWSNB160 and applies in addition to the standard CS Department Acceptable Use Policy.

Lab Access

  • At any time, a lab may be open, scheduled, or closed. During open hours, workstations are available on a first-come, first-served basis to anyone with an account. During scheduled hours, workstations are available only to students in the course for which the lab is scheduled. Labs are available during closed hours only if a designated "lab sitter" has opened the room.
  • Remote access to UNIX/Linux workstations via ssh is allowed at all times. (Remote access may be disallowed during scheduled labs if performance becomes a problem.)
  • Remote access to Windows machines is not allowed.

Disk Space

As of fall 2012 we now have a quota of 1GB on undergrad career and instructional accounts (prior to fall 2012 we had no quotas).

Games and Other Non-Academic Use

Be reasonable. If you're not affecting anyone, no one will care. If you are affecting anyone, we will do what is necessary to make sure you stop, including freezing your account.


Food or drinks are discouraged in the workstation labs. If you have food or drink in the labs, be careful not to spill it on keyboards or machines. It is your responsibility to leave the work area clean for the next user.

Account Use

You must not allow others to use your account. Giving others your password, adding them to your .rhosts/.shosts/authorized_keys file, logging them into the workstation next to you, or any other form of account sharing can result in the loss of your account.


Please keep printing to a minimum - to help reduce monetary costs to the department and the environmental impact. Use on-line previewers (xdvi, gv, xpdf, Adobe reader, etc), and print text files "two up" and duplexed.

Backups and Restores

To guard against the effects of disk failures, all user files are backed up according to the backup schedule. If you inadvertently delete a file, it may be possible to restore it. Submit restore requests through the trouble web form (see below) or email to operator@cs.purdue.edu.

Reporting Problems

Use the trouble web form by following the Submit a request or report a problem link on our Help page (http://support.cs.purdue.edu/help/)

Violation of these policies may result in your account and the files within being frozen for one or more days. It will be up to you to work out course project completion with your instructor until (and if) your account is unfrozen.

Contact Us: Facilities Software Staff
Last Updated: February 11, 2013

Last Updated: Apr 17, 2017 11:04 AM

Department of Computer Science, 305 N. University Street, West Lafayette, IN 47907

Phone:(765) 494-6010 • Fax: (765) 494-0739

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