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How To Enable Root Account on Mac OSX

April 20th, 2008 by Angsuman Chakraborty

1. Login to the Admin account (not the normal account)
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Tags: Apple, Company, Headline News, How To, Mac OSX, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

How To Change MySQL Password

April 20th, 2008 by Angsuman Chakraborty

Let’s look at all the ways to change MySQL password, for root and other users:

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Tags: Database, Headline News, How To, MySQL, Programming, RDBMS, Tech Note | Feedback | RSS 2.0 | Email this Article

Program (Source Code) to Trim Whitespaces from Files…

April 20th, 2008 by Angsuman Chakraborty

PHP is not only a very competent web development language (and part of LAMP stack). It is also a very capable language for writing (command line) scripts. You can write simpler and cleaner scripts with php than perl. Here is a php code which takes a file name as input, trims whitespace from each line of the file and finally saves the result back in the same file.

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Tags: Headline News, How To, PHP, Programming, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

MySQL Tip: How To Check, Repair & Optimize All Tables in All Databases

April 20th, 2008 by Angsuman Chakraborty

Here is a simple command to auto repair, check and optimize all the tables in all databases running on a MySQL server:

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Tags: Company, Database, Enterprise Software, Headline News, How To, MySQL, RDBMS, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

Solution: Missing Dependency: faad2 < 2.5 is needed by package ffmpeg-libs & Error: vlc conflicts with faad2 >= 2.5

March 22nd, 2008 by Angsuman Chakraborty

Linux LogoHave you seen the error while installing a package using yum / yumex?

Error: vlc conflicts with faad2 >= 2.5
Error: Missing Dependency: faad2 < 2.5 is needed by package ffmpeg-libs

The error is because of using freshrpms repository or other repository to install recent version of faad2. Now let’s see how you can solve it.

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Tags: Fedora 7, Fedora Core 6, Headline News, How To, Linux, Linux Migration, Open Source Software, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

How To: Java Stack Trace in Linux

February 24th, 2008 by Angsuman Chakraborty

A simple tip for newbies - how to get Java stack trace, the invaluable tool to debug java programs, in Linux:
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Tags: Headline News, How To, Java Software, Linux, Linux Migration, Open Source Software, Programming, Tech Note | 2 Comments | RSS 2.0 | Email this Article

Load Balancing & Failover Script for Dual/ Multi WAN / ADSL / Cable Connections on Linux with Mail on failure

February 13th, 2008 by Angsuman Chakraborty

Please read the original article - How To: Load Balancing & Failover With Dual/ Multi WAN / ADSL / Cable Connections on Linux. It contains detailed information with a sample script. Viliam Kočinský modified my script to send email when routing table changes. Also he is starting the script as a service from /etc/init.d. Read below for his enhancements:

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Tags: Enterprise Software, Fedora 7, Fedora Core 6, Headline News, How To, Linux, Linux Migration, Open Source Software, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

How To Forward Local Host & Port via SSH Client To Remote SSH Server

December 21st, 2007 by Angsuman Chakraborty

SSH is aptly termed as poor man’s VPN. You can use it to either forward local host host name and port to a remote server running ssh daemon. You can also use it to forward remote server’s port to a local host and port.

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Tags: Computer Security, Enterprise Software, Firewall, Headline News, How To, Linux, Open Source Software, Tech Note, Web | Feedback | RSS 2.0 | Email this Article

Never Restart Network on Multi-ADSL Connection Machine…

November 23rd, 2007 by Angsuman Chakraborty

I learned it the hard way. Our gateway machine with firewall (shorewall) has multiple ADSL connections configured with load balancing for more bandwidth and transparent fail-over. Today I faced an unenviable problem where one or other of the ADSL connections were going down sometime after a network restart. It was unique because the ADSL modems (configured as router) were accessible via telnet or ping and displayed perfect connectivity. However I was unable to use them as gateway to connect to a server on the internet. They were working fine before. With our non-trivial setup there were many suspects including the shorewall firewall and iptables (dropping certain packets?), network adapter, routing issue etc.

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Tags: DSL, Dataone Broadband, Fedora 7, Fedora Core 6, Headline News, How To, Linux, Tata Indicom Broadband, Tech Note, Web | 2 Comments | RSS 2.0 | Email this Article

6 MySQL Database Replication Tips

November 18th, 2007 by Angsuman Chakraborty

Replicating on two or more MySQL master database servers

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Tags: Database, Database Replication, Enterprise Software, Headline News, How To, Linux, MySQL, Open Source Software, Programming, RDBMS, Tech Note, Web Hosting | Feedback | RSS 2.0 | Email this Article

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