wget

How to install java 6 on CentOS 5 and remove other JDK, JRE version?

At the time of writing this article Java 6 (update 37) was available at http://www.java.com/en/download/manual_v6.jsp

First set up a folder where you want to install java

$ cd /opt

$ wget http://download.oracle.com/otn-pub/java/jdk/6u37-b06/jdk-6u37-linux-x64-rpm.bin

$ chmod +x jdk-6u37-linux-x64-rpm.bin

$ ./jdk-6u37-linux-x64-rpm.bin
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World Wide Web Get – wget

Grab entire website content with “wget”

The web get feature “wget” enables a user to grab the entire content of the website. There may be situations where your may have difficulty in getting the source code from your software vendor, or may not have access details to certain location in which case “Wget” comes in handy. This feature is available for win32 platform as well. Work around for this is for the user to install cygwin to run the “wget” command Continue Reading…

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MD5 CheckSum, SHA1 CheckSum, PGP Verification

In order to ensure that the files that are downloaded from a site has been saved in its entirety and to give the added security that no intruders have modified the content of the files, various techniques have been used by source providers like MD5 checksum, SHA1 checksum, PGP verification. To explain how MD5 checksum, SHA1 checksum or PGP verification of the files happen, I will go ahead by explaining the steps by using a copy of openSSL program. Continue Reading…

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