• Cancelling print jobs
• Disabling/enabling color printers

There are occasions when jobs sent to the printers can become stuck or cause the printer to spit out pages endlessly. In such cases a staff member needs to cancel the print job. To cancel a print job you must have a login account on the gis server workstation.

• telnet to gis.geo.umass.edu and log in
• identify which printer has the stuck job and what the job ID is by issuing the command: lpstat -o
• find the printer and job ID you wish to cancel in the output of lpstat and then issue the sudo cancel command with it:

• enter your password to complete the command

When you execute a sudo command for the first time in a log in session the sudo program will prompt you for your password. Sudo will remember your password for ~5 minutes; after that time, or if you log out and log in again, you will be prompted again for you password.

If the lab is being used by a class or group which should not have access to the color printers, staff members with login accounts can run a simple command to disable all color printers. This will result in all print jobs sent to those printers being discarded. Users of the PC’s will not be notified that the printers are disabled; their print jobs will simply disappear. To disable or enable the color printers you must have a login account on the gis server workstation.

To disable the color printers:

• telnet to gis.geo.umass.edu and log in
• issue the command: sudo rejectdj
• enter your password when prompted

After entering your password you should see messages similar to the following:

To enable the color printers:

• telnet to gis.geo.umass.edu and log in
• issue the command: sudo acceptdj
• enter your password when prompted

After entering your password you should see messages similar to the following:

Last revised 26-Jan-2000