Free Full version of ILOG Optimization products via IBM's Academic Initiative Program

Since 15th February 2010, , IBM is offering no-charge full-version ILOG Optimization products via IBM's Academic Initiative Program. The ILOG Optimization provides registered members with renewable one-year access to IBM ILOG OPL-CPLEX, CPLEX, CP Optimizer and CP for both teaching and research use.

Registered members can access and obtain ILOG Optimization software at: https://www.ibm.com/developerworks/university/software/get_software.html, where they can search for ILOG Optimization or individual solvers

To run the software, members will also need to download a key from: https://www.ibm.com/developerworks/university/support/ilog.html, but are no longer required to install ILM. Note that as part of Academic Initiative, IBM also makes its professionally-developed training materials available for use in classrooms and labs at: https://www14.software.ibm.com/webapp/devtool/scholar/web/coursewarePickPage.do?source=ai-course-websphere.

For ILOG support, you can go to IBM Academic Initiative Support for more information

Automatically load sessions with SSH

To run a program after the ssh, simply pass the program at the end of the ssh command

# ssh root@remote.server.com nano

To connect into a remote screen session, it is necessary to add the "-t" flag

# ssh -t root@remote.server.com screen -dr

According to the ssh man page, the "-t" flag force pseudo-tty allocation. This can be used to execute arbi-
trary screen-based programs on a remote machine.

For the screen command "screen -dr", it refers to reattaching a session and if necessary detach it first.

Very useful indeed

Configuration of EtherChannel / Link aggregation with ESX

Taken and summarised from Vmware KB Article "Sample configuration of EtherChannel / Link aggregation with ESX and Cisco/HP switches". This KB article applies to Vmware products version 3.0.x to version 4.1.x


This article describes the sample configurations of configurations of link aggregation / NIC Teaming / LACP / Ether-Channel connectivity between ESX and Physical Network Switches.....

For more information, see Sample configuration of EtherChannel / Link aggregation with ESX

Wiping Data Permanently from the command line

Learned this from the Tip and Tricks from Linux For You Magazine August 2010 Edition

Do be careful when you fire this command as this will destroy all your data. You should use the utilities shred

# shred -v -n 2 -z /dev/sdc

where

-v: verbose
-n: number of passes of random data
-z: finishes cleaning with one pass of zero

Sage - an Open Source Mathematics Software System

Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface.

Additional Documentation:

1. Sage Tutorial
2. Sage Installation Guide
3. Sage FAQ
4. Download for Linux