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Technology Insights

Install RAR On CentOS Linux, Install UnRAR On CentOS Linux

InsightsBy alexAugust 13, 2010Leave a comment

The rar and unrar packages are not available from the default yum repositories on CentOS Linux so you will need to install the rpmforge repo to install these packages via yum. Read this article for steps on how to install the rpmforge repository on CentOS Linux. Once installed you can install rar and unrar using…

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Technology Insights

Upgrade Firmware On Linksys PAP2T-NA

InsightsBy alexAugust 12, 20104 Comments

I have a client with a Cisco 2811 with primarily Cisco 7960 phones configured off of it. Recently hey switched their telecommunications provider but didn’t get a POTS line for the fax machine. I am going to try to configure a PAP2T-NA to convert from SIP to POTS for the fax machine to see if it…

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Technology Insights

How to Stop Google from Redirecting to Whatever Country You Are In.

InsightsBy purehateAugust 11, 2010Leave a comment

I have been on vacation for the past few weeks and every country I go to, when I open my home page which is Google, it goes to the Google page of that particular country. I have found this to be really annoying. The browser I am using is Google Chrome however I experienced the…

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Information Security

Hashcat-gui: Save Charset Groups As Jobs To Crack Future Hashes

SecurityBy alexAugust 10, 2010Leave a comment

Recently I have started using Hashcat-gui a lot more to test the strength of various passwords for certain clients. One of the things I wasn’t sure of at first was how to save charsets in the Bruteforce Settings window and while it would be nice if you could have a text file that included various…

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Information Security

Hashcat: Use the Hashcat-gui On Windows To Brute Force MD5 Hashes

SecurityBy alexAugust 9, 2010Leave a comment

Hashcat is an excellent tool to use or security audits of passwords. I will be doing a series of articles relating to anything from simple brute forcing such as the article to more complex techniques using Hashcat, oclHashcat, and the Hashcat-gui on both Windows and Linux operating systems. The goal is to make people more…

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Technology Insights

CentOS Linux: sort: invalid option — R, Try sort –help for more information

InsightsBy alexAugust 8, 2010Leave a comment

I was working on an article a couple days ago with a friend and he had sent over some commands for me to reference in the article which included the “sort -R” command. The sort -R switch will randomly sort the contents of a file which is very useful in certain situations. The problem is…

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Technology Insights

Install Or Upgrade One Application From coreutils Package On CentOS Linux

InsightsBy alexAugust 7, 20104 Comments

Yesterday I needed to upgrade a single application on CentOS Linux. First I figured out that the application was part of the coreutils RPM package which is currently only available up to version coreutils 5.97-23 on CentOS. The current coreutils package is already up to coreutils 8.5 and upgrading coreutils is near impossible on CentOS…

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Technology Errors

Linux make Error: gcc: unrecognized option ‘-02’

ErrorsBy alexAugust 6, 2010Leave a comment

Earlier I was compiling the coreutils application on CentOS Linux and ran into an issue after using the “make” command. At first I was confused because I wasn’t doing anything complex but then I realized that I had simply mistyped an environment variable I had previously set. Below I describe the actual error, what was…

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Technology Insights

Find Out What Applications Are Installed From An RPM Package On Linux

InsightsBy alexAugust 5, 2010Leave a comment

Earlier today I was upgrading some packages on a CentOS Linux server and was curious what applications were actually installed with the coreutils RPM package. I knew that this was one of the main RPM packages that had a ton of various applications installed with it however I was not sure specifically which ones. Below…

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