Linux

Installation Pre-Requisites

Ensure that CUPS is installed and started.
Ensure that the SAMBA4 client packages are installed (SAMBA 3 will not work). If your distribution does not include a default smb.conf config file (usually in /etc/samba), you will need to follow your distribution's instructions to create a default smb.conf .
Edit the Samba config file (usually /etc/samba/smb.conf) to contain the following two directives in the "[global]" section:
```
          client min protocol = SMB2
          client max protocol = SMB3

      

    
```

Ensure the following symlink exists:

/usr/lib/cups/backend/smb → /usr/bin/smbspool

If using the PaperCut installers, ensure that CURL is installed.
If using the PaperCut installers, obtain the installer packages from CNF Computing.

Installing

Make sure you have satisifed the above pre-requisites.

RedHat/Debian/Ubuntu/Mint - PaperCut installers

Install the PaperCut packages:
1. For RedHat use the "yum install" command to install the package. Eg:
```
sudo yum install net-print-1.2.1-0.x86_64.rpm

          

        
```
2. For Debian/Ubuntu/Mint:
  1. Install additinoal pre-requsities:
    1. python3
    2. gnome-terminal
    3. curl
    4. Java8 JRE
    5. 1. sudo add-apt-repository ppa:webupd8team/java
      2. sudo apt-get update
      3. sudo apt-get install oracle-java8-installer
  2. Install the Debian Net-Print package itself.
Items "Net-Print Queue Installer" and "PaperCut Client" are created in the "Internet", "office", and "System" sub menus of your desktop
Run the Net-Print Queue Installer application
1. You may need to manually run this from the commandline as follows (eg permissions problems adding the printer):
```
sudo /opt/netprint/client/install_netprintpc_printer.pl -g
```
2. For the "Department", select "RS-CNF"
3. You will see multiple "Find-Me" print queues listed at the top of the list of printers. The specific CNF printers are listed at the bottom of the list.

ArchLinux - PaperCut installers

Obtain the Debian Net-Print installer from CNF Computing
Install java, curl, samba, cups, and python3 .
Obtain an smb.conf file per the Arch Wiki
Start CUPS via:

systemctl restart org.cups.cupsd.service
Install yaourt:

pacman -S yaourt
As a non-root user, install dpkg:

yaourt dpkg
You will be prompted to edit the package build. Choose No. Otherwise, install the missing prereqs and let the build take place.
As root, install the net-print package, eg:

dpkg -i --ignore-depends=smbclient,python3,default-jre,gnome-terminal,curl . /net-print_1 .2-1.deb
Run, as root, the Net-Print installer:

/opt/netprint/client/install_netprintpc_printer .pl -g
For Department, select RS-CNF
You will see multiple "Find-Me" print queues listed at the top of the list of printers. The specific CNF printers are listed at the bottom of the list.

RedHat - Printer configuration GUI

Start the Printer configuration tool at System - Administration - Printing
Click New
Enter the administrative password
You do not need to adjust the firewall or attempt to List available devices

For the "device URI", you will use these UNIX SMB URIs :

Printer Name	UNIX SMB URI	Accessible by
Cad Room	smb://win2.net-print.cornell.edu/cnf-cad-1c	CNF Users & Staff
Togging	smb://win2.net-print.cornell.edu/cnf-togging-2c	CNF Users & Staff
Visitor Office	smb://win2.net-print.cornell.edu/cnf-gradoffice	Staff & Users with Visitor Office Access
Konica	smb://win2.net-print.cornell.edu/cnf-konica-color	CNF Staff Only
LJ4700	smb://win2.net-print.cornell.edu/cnf-prnt250lj	CNF Users during normal CNF office business hours (CNF Staff anytime)
Office 262	smb://win2.net-print.cornell.edu/cnf-prnt262	CNF Staff Only

If a driver is not found, you will have to download a driver via the printer gui or separately from the manufacturer's website.

All Linux Distros - CUPS Printer GUI

The CUPS printer GUI is located at the following URL:

        http://localhost:631

Use the UNIX SMB URIs from the above "RedHat - Printer configuration GUI" section.
Enable authentication for the print queue
1. If you cannot enable authentication via the CUPS web gui, edit file /etc/cups/printers.conf to add a line for the NetPrint queue:
```
AuthInfoRequired username,password
```

All Linux Distros - Commandline

Download a PPD for the model of printer
Get the SMB URI for the printer from the sections above

As root or sudo'ed, run the following command (substituting in for the brackets)

lpadmin -p <your_name_for_the_print_queue> -E -P </path/to/PPD-file> -o auth-info-required=username,password -v '<SMB URI>'

Post-Installation Optional Steps

Printer Error Policy

The default Error Policy on some linux distributions is to stop the printer queue from processing more print jobs A better choice is to either retry the job or to abort the job.

List the installed printer queues:

$ lpstat -a
cnf-cad-1c accepting requests since Mon 27 Nov 2017 11:11:49 AM EST
cnf-konica-color accepting requests since Tue 30 Oct 2018 01:58:19 PM EDT
cnf-prnt250lj accepting requests since Thu 31 Jan 2019 03:27:23 PM EST
cnf-togging-2c accepting requests since Mon 27 Nov 2017 11:11:49 AM EST

Set the error policy for each printer queue to abort the job (eg for the CAD rm printer):
```
$ sudo lpadmin -p cnf-cad-1c -o printer-error-policy=abort-job
```

Don't require "cornell\" before your NetID or GuestID

Before doing the following, first stop CUPS. Once you have made changes, restart CUPS.

Edit the /etc/cups/ppd/printers.conf file in your favorite text editor
For each printer queue, find the line starting with "DeviceURI" .
Add "cornell/" between the "smb://" and the "win2.net-print.cornell.edu", for example
```
DeviceURI smb://cornell/win2.net-print.cornell.edu/cnf-cad-1c
    
```
Do the above for each printer. Save your changes. And restart CUPS

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