ECEComputingHowTo

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Contents

Unix/Linux

Troubleshooting nx client problems

If you run into trouble with nx client connection, before requesting assistance,

  1. make sure you can login to the host with a "plain" ssh (eg, secureCRT).
  2. check if you exceeded your quota. you may either create a small file to see if you have space and permission to write in your home directory, or type 'quota -v' to see if you exceeded your quota. Data stored under your ~/scratch directory are not counted against your quota and not backed up to tape.
  3. 'cd ~/.nx', remove everything under ~/.nx
  4. clean all your processes (save all your works first) on this host by issuing command 'kill -9 -1' (this will log you off).

These steps have solved 99% of the nx login problems thus far.

How to find large files and delete them?

Here is an example to find all files under certain directory that are larger than 100MB: cd ~/scratch find . -size +100M -exec ls -l '{}' \;

to delete those large files found (BE CAREFUL! YOU CANNOT UNDO THIS!): find . -size +100M -exec rm -f '{}' \;

Map ECE home directory as a Network Drive on Windows

Email eeadmin@virginia.edu to request a "samba" password before you can proceed. Your PC will need to be on UVa network.

To map your home directory on ECE Linux server to your windows PC:

1) from the computer's desktop or the "Start", right-click on the My Computer (or "Computer") icon and select Map Network Drive. or open a windows explorer window, under tools tab, click "Map Network Drive", if the "tools" command tab don't show, press and release "Alt" key to reveal it.

2) In the Map Network Drive dialog box click on the black down arrow on the same line as Drive, select a desired drive letter, here we pick "N". The drive letter "Z" is selected by default.

3) In the Folder field enter the path to your network drive. Type, \\plato.ee.virginia.edu\your_login

4) check "Connect using different credentials".

5) Click Finish.

6) Enter your username and the password. this is the samba password for mapping a network drive in ECE dept. check "Remember my credentials". Click OK.

7) When you have successfully mapped your network (N:\) drive you should see a window showing the contents. In some cases you will only see an empty window. If a window doesn't appear you can (double) click on the My Computer icon or open Windows Explorer to see your new drive.

To change your samba password, ssh to plato.ee.virginia.edu and type 'smbpasswd'.

Links To Requested Windows Applications

Gimp - Just As Good As Photoshop

GIMP is an acronym for GNU Image Manipulation Program. It is a freely distributed program for such tasks as photo retouching, image composition and image authoring.

It has many capabilities. It can be used as a simple paint program, an expert quality photo retouching program, an online batch processing system, a mass production image renderer, an image format converter, etc.

GIMP is expandable and extensible. It is designed to be augmented with plug-ins and extensions to do just about anything. The advanced scripting interface allows everything from the simplest task to the most complex image manipulation procedures to be easily scripted.

GIMP is written and developed under X11 on UNIX platforms. But basically the same code also runs on MS Windows and Mac OS X.


Faststone Image Viewer

FastStone Image Viewer is a fast, stable, user-friendly image browser, converter and editor. It has a nice array of features that include image viewing, management, comparison, red-eye removal, emailing, resizing, cropping, retouching and color adjustments. Its innovative but intuitive full-screen mode provides quick access to EXIF information, thumbnail browser and major functionalities via hidden toolbars that pop up when your mouse touches the four edges of the screen. Other features include a high quality magnifier and a musical slideshow with 150+ transitional effects, as well as lossless JPEG transitions, drop shadow effects, image annotation, scanner support, histogram and much more. It supports all major graphic formats (BMP, JPEG, JPEG 2000, animated GIF, PNG, PCX, PSD, EPS, TIFF, WMF, ICO and TGA) and popular digital camera RAW formats (CRW, CR2, NEF, PEF, RAF, MRW, ORF, SRF, ARW, SR2, RW2 and DNG).


[#http://www.faststone.org/FSViewerDetail.htm] -> Home Page

XNView Image Viewer

XnView is an efficient multimedia viewer, browser and converter. Really simple to use! Support of more than 500 image formats.

[#http://www.xnview.com/en/xnview/]

Blender 3D

Blender is 3D creation for everyone, free to use for any purpose. Free Software, great community, and 100% open.

[#http://www.blender.org/] -> Home Page [#http://www.blender.org/download/get-blender/] -> Downloads

Lightwave 3D

NewTek LightWave is a robust 3D modeling, animation and rendering program. Many new features in LightWave that are widely used by artists include built-in instancing, Bullet hard body dynamics, and Flocking along with new workflow options such as GoZ support for Pixologic’s ZBrush software and the Unity game engine development platform.

[#https://www.lightwave3d.com/] -> Home Page

Unity

Unity is a game development ecosystem: a powerful rendering engine fully integrated with a complete set of intuitive tools and rapid workflows to create interactive 3D content; easy multiplatform publishing; thousands of quality, ready-made assets in the Asset Store and a knowledge-sharing Community.

[#http://unity3d.com/]

Links To ITS/UVA Webpages

1 Stop ITS Services Directory

[#http://its.virginia.edu/services/]

Available Software at UVA

[#http://its.virginia.edu/central/]

Computer System Alerts, Downtimes and Announcements

[#http://its.virginia.edu/pubs/news/]

Copyrights of Digital Materials and Software

[#http://www.virginia.edu/informationpolicy/copyright.html]

Download And Install VPN

[#http://its.virginia.edu/network/vpn/]

Frequently Asked Questions about Network Registration

[#http://its.virginia.edu/network-registration/faq.html]

Helpdesk - Unblocking Your Computer

[#http://its.virginia.edu/helpdesk/]

Matlab - Using Matlab At UVA And Toolbox Overview

[#http://its.virginia.edu/research/matlab/]

Matlab - Download And Installation

[#http://its.virginia.edu/research/matlab/download.html]

Responsible Computing Handbook For Faculty And Staff

[#http://its.virginia.edu/pubs/docs/RespComp/resp-comp-facstf.html]

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