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'''Computer Help'''
'''Computer Help'''
This is a guide to the computer facilities, services and software available at the Math department of the University of Wisconsin. Most of the facilities are for department's the faculty, graduate students and staff. Those who do not have Math department accounts may use the two kiosk PCs located at the north B1 entrance (facing Ingraham hall) or the PCs located in the Kleene Math Library on the B2 level of Van Vleck hall.
This is a guide to the computer facilities, services and software available at the Math department of the University of Wisconsin. Most of the facilities are for department's the faculty, graduate students and staff.  
 
==How to report an issue==
* https://go.wisc.edu/mathit
* OR email itstaff@math.wisc.edu


== Accounts and Policies ==
== Accounts and Policies ==
Line 7: Line 11:
* [[Quotas]]
* [[Quotas]]
* [[University Computer Policies]]
* [[University Computer Policies]]
 
* [[Math Apps]]
== E-Mail ==


=== Account Set Up ===
=== Account Set Up ===
Every person in the math department should be provided the opportunity to set up an account.  That account is used for ...
Every person in the math department should be provided the opportunity to set up an account.  That account is used for ...


* a math department email account
* computer login for math department computers
* computer login for math department computers
* the ability to print to department printers
* the ability to print to department printers
* file storage on the department file server
* file storage on the department file server
* access to math department servers for math software
* access to math department servers for math software
* the ability to login to various department web pages


This is different from your WiscMail account, which is used for  
This is different from your WiscMail account, which is used for  


* payroll
* payroll
* access to L@UW, Moodle
* access to Canvas
* access to UW system level IT resources such as google apps and UWNet wireless
* access to UW system level IT resources such as Google Apps and UWNet wireless
* your UW wiscmail account
* your UW wiscmail account
* login to various UW protected webpages hosted throughout the university
* login to various UW protected webpages hosted throughout the university
* WiscVPN
* WiscVPN


To set up your IMAP email client
==== Changing your Math Dept. Account Password ====
You can reset or change your account password any time:
# Go to [https://web.math.wisc.edu/help/ https://web.math.wisc.edu/help/]
# Click "Forgot Password"
# Click the link you will receive in your email.


* Account Type: IMAP
=== Dealing With Spam ===
* Incoming and Outgoing Mail Server: mailhost.math.wisc.edu
* IMAP Prefix: (leave blank)
* Incoming Server Port: 993
* Outgoing Server Port: 587
* Check Use STARTTLS


More exact instructions for various IMAP clients can be found at [http://atrium.math.wisc.edu/computing/node/286]
The University runs Office 365, which has some spam controls built in.


If you have problems with this, please let us know:  staff@math.wisc.edu
There's two parts to the UW's spam control.


=== Dealing With Spam ===
* [https://kb.wisc.edu/page.php?id=53321 The Clutter Folder]
All Math Department mail accounts are configured with spam filtering. Messages that are clearly spam are automatically placed into a folder named 'spam' within your account. Messages placed in this folder are automatically deleted after 15 days. Users are encouraged to check their spam folder periodically to ensure that valid messages (known as ham) are not being sent to this folder.
* [https://kb.wisc.edu/page.php?id=45051 The Junk Mail folder]


You can teach the spam filter to be more efficient by following the directions on the page titled, [[Teaching the spam filter to be more efficient]].
Questions regarding these two methods should be directed to the DoIT Help Desk.  (264-HELP, 4357)


=== Vacation Mail ===
=== Vacation Mail ===
I. VACATION MAIL
Here is how to set up vacation notification for your math e-mail account
First, login to login.math.wisc.edu, then type
cd /auto/mail/YOURNAME
where YOURNAME is your username. Then add
the following line to the end of your .procmailrc file:
        :0 c
        | /usr/bin/vacation YOURNAME
where YOURNAME is your username. Edit/create the file
/auto/mail/YOURNAME/.vacation.msg
and put in there the message you want sent out while you are on vacation.
When you return from your vacation, just delete or comment out these lines
in your .procmailrc file by placing a # at the beginning of each line.


        :0 c
[https://kb.wisc.edu/page.php?id=32606 How to set up an auto-reply.]   
        | /usr/bin/vacation YOURNAME
 
This will allow our spam filters to process your incoming mail before
it gets to your mailbox and send your vacation message to only legitimate
addresses.


=== Forwarding your e-mail ===
=== Forwarding your e-mail ===
# We do not recommend forwarding all your math e-mail to a non-UW account
because of the following issues:


  1. possible violation of HIPAA rules on confidentiality of student records
[https://kb.wisc.edu/page.php?id=36539 Set/Manage a Forward on a NetID or Service Account]
    For example, if you forward your e-mail to your yahoo or gmail account,
    what guarantees do you have that this mail will not be indexed or otherwise
    disseminated to third parties?
  2. record retention issues related to student grades, etc.
However, if you are leaving the department,  you may want this information.
To forward filtered mail to a new address, you must first ssh to ''login.math.wisc.edu'' and
put lines like this in your /auto/mail/yourusername/.procmailrc file


        :0:
=== Leaving the Department ===
        !myaddress@somewhere.com
If you leave the Math Department, we will occasionally remove old accounts. In some cases, we can leave an account in place for


(of course you should replace the last line with your forwarding address).
#) users that are continuing to collaborate with faculty or staff for research
#) users that wish to continue to receive mail under their math account for a time.


to forward mail to another account while keeping a copy on our server,
While we can't guarantee infinite continuation of your email account because that is controlled by DoIT, we do have some methods at our command to make this more streamlined and less prone to being deactivated.
put a line like this in your /auto/mail/yourusername/.forward file


        \myusername, myaddress@somewhere.com
Generally, we remove accounts in October and March.  In most cases, you'll be told in an email that we intend on doing this.


=== Leaving the Department ===
If you feel you fall under either of the two case scenarios listed above, please email nagreen@math.wisc.edu.
If you leave the Math Department, your account will be deleted on September 1
after your departure. You will be notified about this on August 1. Here are
some things you may want to do to prepare for this


* Make a backup of your mail. This can be done by simply using the export feature of many mail programs. You can also [[use md2mb]].
=== E-mail Web Forms ===
* Start forwarding your e-mail to another account. To avoid getting spam, login to ''login.math.wisc.edu'' then follow these steps
    cd  /auto/mail/YOURUSERNAME
    edit .procmailrc with your favorite text editor (e.g. vim, emacs or pico). Insert these lines at the end of .procmailrc:
    :0:
    !myaddress@somewhere.com  (your forwarding address)
* Notify the computer staff if you would like forwarding to continue (up to a year after your departure) after your account is deleted. Give them your forwarding address.


=== E-mail Web Forms ===
If you need to have someone contact you via your website, it is better to use a Google Form.
You can create a web page on your web site to allow visitors to send you e-mail messages. With an e-mail form, you can allow users to register for conferences, send feedback, or answer an on-line poll. With additional tools supplied by the Math Department, you can import these messages into a spreadsheet or database.


*[[Creating an E-mail Form]]
https://kb.wisc.edu/104251 has information for creating a google form for use in a class, but you can adapt those instructions to create forms for almost any use case.  The responses are collected in Google, but you can set up a notification to send you an email when you receive a response.
*[[Configuring procmail]]
*[[Manipulating the messages]]


=  
== Facilities ==
== '''Facilities''' ==


The facilities and equipment described below are for use by UW Math department faculty and graduate students on the UW Madison Campus and, preferably, in Van Vleck hall.
The facilities and equipment described below are for use by UW Math department faculty and graduate students on the UW Madison Campus and, preferably, in Van Vleck hall.


* '''Mobile Computers and Projectors''' <br>
===Mobile Computers and Projectors===
Instructors may borrow laptop computers and projectors for demonstrations in any Van Vleck classroom. This equipment is kept in the Math Library on the B2 classroom level. You may check them out for up to 4 hours using your UW ID card. The math library also has an assortment of VGA video cables which can be used to connect a PC, Macintosh computer or iPad to a projector.  One of the projectors has built in speakers and a DVD player.  It also has two microphones which can be connected to it. WARNING: the laptops available for check out are very old and have only basic software (MS Office, TeX) on them.  It is far better to use your own computer with the Department's projectors.
Instructors may borrow laptop computers and projectors for demonstrations in any Van Vleck classroom. This equipment is kept in the AMP Library in Chamberlin Hall. You may check them out for up to 4 hours using your UW ID card. The math library also has an assortment of VGA and HDMI video cables which can be used to connect a PC, Macintosh computer or iPad to a projector.  One of the projectors has built in speakers and a DVD player.  It also has two microphones which can be connected to it. WARNING: the laptops available for check out are somewhat old and have only basic software (MS Office, TeX) on them.  It is far better to use your own computer with the Department's projectors.
 
===Ceiling Mounted Projectors===


* '''Ceiling Mounted Projectors''' <br>
Classrooms B102, B107, B130, B215, B231 and B223, B239, the 901 seminar room, and the 911 Lounge each have a ceiling mounted projector. These projectors provide better displays than the mobile units. They can be used with a laptop computer. If you want to reserve one of these rooms, contact Sharon Paulson at paulson@math.wisc.edu. Keep in mind, though, that they're heavily booked and usually only available at the beginning or end of the day.


Classrooms B102, B107, B231 and B223 and the 901 seminar room each have a ceiling mounted projector. These projectors provide better displays than the mobile units. They can be used with a laptop computer. If you want to reserve one of these rooms, contact Sharon Paulson at paulson@math.wisc.edu. Keep in mind, though, that they're heavily booked and usually only available at the beginning or end of the day.
The Math Department's computer staff maintain the projectors in 901 and 911. All the others are maintained by the UW Physical Plant. Please contact Derek Dombrowski about them.  You will need an access code to use them and a key if you want to use the document camera or microphone with them.
The Math Department's computer staff maintain the projectors in 901 and B107. All the others are maintained by the UW Physical Plant. Please contact Derek Dombrowski about them.  You will need an access code to use them and a key if you want to use the document camera or microphone with them.
Here is Derek's contact information:
Here is Derek's contact information:
     Derek Dombrowski
     Derek Dombrowski
Line 136: Line 92:
     (608) 265-9697
     (608) 265-9697
     (608) 516-5993
     (608) 516-5993
* '''Computer Classroom''' <br>


B107 is an instructional computer lab featuring 21 speedy (2.8 GHz, 2 gb RAM) Windows PCs --each PC has network access and Maple, Matlab, and MSOffice programs-- a ceiling-mounted projector connected to the instructor's computer, and an HP B&W Laserjet printer with duplexer. To reserve this room, please contact Joan Wendt at paulson@math.wisc.edu.
===Scanners ===
 
[[Scanners]]
You can check out the key for the room from the Math Library.
* '''Digital Camcorder''' <br>
 
There is a Canon Vixia HG20 Cam Corder in the Math Library which Math faculty and Graduate students can check out to film Math Events such as conferences, PhD defenses, etc. Use your faculty/staff ID card to check it out.
* [[Scanners]]


= Printing =
= Printing =


Math Dept Printers
==Math Dept Printers==
{|
{| class="wikitable"
! Location
! Location
! PrinterName
! PrinterName
Line 156: Line 106:
|3rd hall
|3rd hall
|3
|3
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|4th hall
|4th hall
|4
|4
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|5th hall
|5th hall
|5
|5
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|6th hall
|6th hall
|6
|6
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|7th hall
|7th hall
|7
|7
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|8th hall
|8th hall
|8
|8
|Ricoh MPC 4501
|Ricoh IMC6000
|-
|-
|101B VV
|101B VV
|a
|a
|HPLJ 4300
|HP LaserJet 600 M601
|-
|B127 VV
|b
|HPLJ 4300
|-
|}
|}


During the summer of 2011, the department placed new Ricoh MPC 4501 printer/copier/scanners on floors 3-8. We will also switched from LPRNG to CUPS (the Common Unix Printing System) on our unix print servers.  What this means in practical terms is that users should become familiar with the System V lp commands. Previously, we used the Berkeley lpr command and some of these commands will still work.   
During the summer of 2020, new Ricoh IMC 6000 printers were placed on floors 3-8. We will also switched from LPRNG to CUPS (the Common Unix Printing System) on our unix print servers.   


Here are the '''page charges''' for printing and copying:
As of 2014, we stopped charging for overages in printing, but want people to consider carefully the costs of consumables and paper, and the impact on the climate from overuse of paper.  Please limit your use of our copiers to fewer than 250 pages a month.
 
  Printing:  250 free B&W pages per month, 4 cents per B&W page beyond the free allowance
            color pages will cost 20 cents per page with no free allowance.
  Copying:  200 free B&W pages per month, 4 cents per B&W page beyond the free allowance and 20 cents per color page with no free allowance.
  Scanning: There is no charge for scanning a document and e-mailing it to yourself. However,
            users should not scan copyrighted material.


== Supplies ==
== Supplies ==
If the printers run out of paper, please get more paper from the Copy Center on the second floor
If the printers run out of paper, please get more paper from the Copy Center on the second floor
and place it in the printers. If you are unsure how to do this, ask the computer staff for assistance.  For assistance with other problems (no toner, paper jams, etc. ) see Hieu Nguyen
and place it in the printers. If you are unsure how to do this, ask the computer staff for assistance.  For assistance with other problems (no toner, paper jams, etc. ) see Henry Mayes in 507 (for issues with the Ricoh copiers) and Sharon Paulson in 220 (for help with the printers in B127 and 101b).  
in 215 (for issues with the Ricoh copiers) and Sharon Paulson in 220 (for
help with the printers in B127 and 101b).  


See the [http://www.cups.org/ cups guide] for more detailed information on printing with cups.
See the [http://www.cups.org/ cups guide] for more detailed information on printing with cups.
Click on the links below to learn how to use each function with the Ricoh copiers.
Click on the links below to learn how to use each function with the Ricoh copiers.


== [[Ricoh Copier FAQ]] ==
== Ricoh Copier ==
 
[[Ricoh Copier FAQ]]


Only people with computer accounts in the UW Math Department will be allowed to use the Van Vleck Ricoh copiers. If you have a math account, you will receive a code to use for copying. These  
Only people with computer accounts in the UW Math Department will be allowed to use the Van Vleck Ricoh copiers. If you have a math account, you will receive a code to use for copying. These  
Line 213: Line 152:
the math department linux PCs and type '''whatsmypin'''.
the math department linux PCs and type '''whatsmypin'''.


  1. You copier code is only required for copying.  Although the
* You copier code is only required for copying.  Although the default display shows the copier login, you do not have to login in order to print or scan.  Just push the buttons at the left to select the scanner or printer function.
  default display shows the copier login, you do not have to login
  in order to print or scan.  Just push the buttons at the left
  to select the scanner or printer function.
 
  2. Your code can be used on any of the copiers on floors 3-8.
  Do not use the copiers on the second floor. They are reserved
  for the administrative staff.


  3. After you have finished copying, do not touch the display.
* Your code can be used on any of the copiers on floors 3-8. Do not use the copiers on the second floor. They are reserved for the administrative staff.
  Your login will time out after 60 seconds.


  4. Everyone with a math dept account is allowed 250 free copies
* After you have finished copying, do not touch the display. Your login will time out after 60 seconds.
  and 250 free printed pages per month (on the union of all the
  copiers on floors 3-8). At the end of the month,
  these are zeroed out. You can not carry over unused pages to the
  next month.  Printing and Copying charges are described at the URL
  above. Note that you will be charged for each side of a duplex
  printed page. You may also be charged more for larger pages.


  5. How to create a multi-page PDF document: Most people will want
* Everyone with a math dept account is urged to keep their printing  at fewer than 250 pages a month. The Math Department does keep a count of printing totals.  You may receive a report each month on your total printing.  At the end of the month, these are zeroed out.
  to create a multipage PDF scan of their document (instead of the
  default which is a single page TIFF document). To do this press the
  SCANNER button to the left of the display. Select SEND FILE TYPE/NAME
   in the left hand column of the display, then select MULTI-PAGE -> PDF


== [[Ricoh Printing FAQ]] ==
* How to create a multi-page PDF document: Most people will want to create a multipage PDF scan of their document (instead of the  default which is a single page TIFF document). To do this press the SCANNER button to the left of the display. Select SEND FILE TYPE/NAME in the left hand column of the display, then select MULTI-PAGE -> PDF


== Ricoh Printing FAQ ==
* [[Ricoh Printing FAQ]]
* [[Using the Ricoh with Linux]] (command line printing)
* [[Using the Ricoh with Linux]] (command line printing)
* [[Using a Ricoh Printer on a Macintosh]]
* [[Using a Ricoh Printer on a Macintosh]]
Line 246: Line 169:
* [[Troubleshooting]]
* [[Troubleshooting]]


== [[Ricoh Scanner FAQ]] ==
== Ricoh Scanner FAQ ==
[[Ricoh Scanner FAQ]]


= Remote Access =
= Uploading webpages to your personal Math Dept. site =


https://www.math.wisc.edu/wiki/index.php/Accessing_your_Math_department_network_space
See [https://kb.wisc.edu/math/internal/122223 Transferring Existing HTML Webpages to our servers]


= TeX/LaTeX =
= TeX/LaTeX =

Latest revision as of 20:04, 26 August 2024

Computer Help This is a guide to the computer facilities, services and software available at the Math department of the University of Wisconsin. Most of the facilities are for department's the faculty, graduate students and staff.

How to report an issue

Accounts and Policies

Account Set Up

Every person in the math department should be provided the opportunity to set up an account. That account is used for ...

  • computer login for math department computers
  • the ability to print to department printers
  • file storage on the department file server
  • access to math department servers for math software
  • the ability to login to various department web pages

This is different from your WiscMail account, which is used for

  • payroll
  • access to Canvas
  • access to UW system level IT resources such as Google Apps and UWNet wireless
  • your UW wiscmail account
  • login to various UW protected webpages hosted throughout the university
  • WiscVPN

Changing your Math Dept. Account Password

You can reset or change your account password any time:

  1. Go to https://web.math.wisc.edu/help/
  2. Click "Forgot Password"
  3. Click the link you will receive in your email.

Dealing With Spam

The University runs Office 365, which has some spam controls built in.

There's two parts to the UW's spam control.

Questions regarding these two methods should be directed to the DoIT Help Desk. (264-HELP, 4357)

Vacation Mail

How to set up an auto-reply.

Forwarding your e-mail

Set/Manage a Forward on a NetID or Service Account

Leaving the Department

If you leave the Math Department, we will occasionally remove old accounts. In some cases, we can leave an account in place for

  1. ) users that are continuing to collaborate with faculty or staff for research
  2. ) users that wish to continue to receive mail under their math account for a time.

While we can't guarantee infinite continuation of your email account because that is controlled by DoIT, we do have some methods at our command to make this more streamlined and less prone to being deactivated.

Generally, we remove accounts in October and March. In most cases, you'll be told in an email that we intend on doing this.

If you feel you fall under either of the two case scenarios listed above, please email nagreen@math.wisc.edu.

E-mail Web Forms

If you need to have someone contact you via your website, it is better to use a Google Form.

https://kb.wisc.edu/104251 has information for creating a google form for use in a class, but you can adapt those instructions to create forms for almost any use case. The responses are collected in Google, but you can set up a notification to send you an email when you receive a response.

Facilities

The facilities and equipment described below are for use by UW Math department faculty and graduate students on the UW Madison Campus and, preferably, in Van Vleck hall.

Mobile Computers and Projectors

Instructors may borrow laptop computers and projectors for demonstrations in any Van Vleck classroom. This equipment is kept in the AMP Library in Chamberlin Hall. You may check them out for up to 4 hours using your UW ID card. The math library also has an assortment of VGA and HDMI video cables which can be used to connect a PC, Macintosh computer or iPad to a projector. One of the projectors has built in speakers and a DVD player. It also has two microphones which can be connected to it. WARNING: the laptops available for check out are somewhat old and have only basic software (MS Office, TeX) on them. It is far better to use your own computer with the Department's projectors.

Ceiling Mounted Projectors

Classrooms B102, B107, B130, B215, B231 and B223, B239, the 901 seminar room, and the 911 Lounge each have a ceiling mounted projector. These projectors provide better displays than the mobile units. They can be used with a laptop computer. If you want to reserve one of these rooms, contact Sharon Paulson at paulson@math.wisc.edu. Keep in mind, though, that they're heavily booked and usually only available at the beginning or end of the day.

The Math Department's computer staff maintain the projectors in 901 and 911. All the others are maintained by the UW Physical Plant. Please contact Derek Dombrowski about them. You will need an access code to use them and a key if you want to use the document camera or microphone with them. Here is Derek's contact information: 

    Derek Dombrowski
    373A BASCOM HALL
    ddombrowski@fpm.wisc.edu
    (608) 265-9697
    (608) 516-5993

Scanners

Scanners

Printing

Math Dept Printers

Location PrinterName Printer Type
3rd hall 3 Ricoh IMC6000
4th hall 4 Ricoh IMC6000
5th hall 5 Ricoh IMC6000
6th hall 6 Ricoh IMC6000
7th hall 7 Ricoh IMC6000
8th hall 8 Ricoh IMC6000
101B VV a HP LaserJet 600 M601

During the summer of 2020, new Ricoh IMC 6000 printers were placed on floors 3-8. We will also switched from LPRNG to CUPS (the Common Unix Printing System) on our unix print servers.

As of 2014, we stopped charging for overages in printing, but want people to consider carefully the costs of consumables and paper, and the impact on the climate from overuse of paper. Please limit your use of our copiers to fewer than 250 pages a month.

Supplies

If the printers run out of paper, please get more paper from the Copy Center on the second floor and place it in the printers. If you are unsure how to do this, ask the computer staff for assistance. For assistance with other problems (no toner, paper jams, etc. ) see Henry Mayes in 507 (for issues with the Ricoh copiers) and Sharon Paulson in 220 (for help with the printers in B127 and 101b).

See the cups guide for more detailed information on printing with cups. Click on the links below to learn how to use each function with the Ricoh copiers.

Ricoh Copier

Ricoh Copier FAQ

Only people with computer accounts in the UW Math Department will be allowed to use the Van Vleck Ricoh copiers. If you have a math account, you will receive a code to use for copying. These codes will be mailed out once a year in September after old accounts are deleted and new ones added. NOTE: if you forget your copier code, login to one of the math department linux PCs and type whatsmypin.

  • You copier code is only required for copying. Although the default display shows the copier login, you do not have to login in order to print or scan. Just push the buttons at the left to select the scanner or printer function.
  • Your code can be used on any of the copiers on floors 3-8. Do not use the copiers on the second floor. They are reserved for the administrative staff.
  • After you have finished copying, do not touch the display. Your login will time out after 60 seconds.
  • Everyone with a math dept account is urged to keep their printing at fewer than 250 pages a month. The Math Department does keep a count of printing totals. You may receive a report each month on your total printing. At the end of the month, these are zeroed out.
  • How to create a multi-page PDF document: Most people will want to create a multipage PDF scan of their document (instead of the default which is a single page TIFF document). To do this press the SCANNER button to the left of the display. Select SEND FILE TYPE/NAME in the left hand column of the display, then select MULTI-PAGE -> PDF

Ricoh Printing FAQ

Ricoh Scanner FAQ

Ricoh Scanner FAQ

Uploading webpages to your personal Math Dept. site

See Transferring Existing HTML Webpages to our servers

TeX/LaTeX

TeX and LaTeX are supported on the Math Department computers. To learn more about Typesetting with LaTeX we recommend the following site. Mediawiki has some support for LaTeX as the following example shows:

[math]\displaystyle{ \int_{[0, 1]^n} \left| \sum_{k = 1}^n \mathrm{e}^{2 \pi \mathrm{i} \, x_k} \right|^s \mathrm{d}\boldsymbol{x} }[/math]

Unix

Manipulating PDF files

The pdftk toolkit provides several useful tools for manipulating PDF files without using Adobe Acrobat Pro. Here are some examples:

1. This command will split off the first 15 pages of the file NSFProposal.pdf and save it to 'front.pdf'. Substituting 'cat 16-end' for 'cat 1-15' will save the second half of the file. 

 pdftk NSFProposal.pdf cat 1-15 output front.pdf

2. This command will merge two (or more) pdf files: 

 pdftk 1.pdf 2.pdf 3.pdf cat output 123.pdf

You can find more examples at pdftk-examples

Troubleshooting

Answers to some common computer problems

1. If you forgot the code you need to use the copiers, login to one of the department's linux PCs, open a terminal window and type 'whatsmypin'.

2. 'Macintosh users'. Sometimes the internet connection on a Mac will freeze. If this happens, click on the following" 

 System Preferences -> Network -> DCHP -> Advanced -> renew DHCP lease
Retrieved from "https://wiki.math.wisc.edu/index.php?title=Computer_Help&oldid=26860"