Simple Golang port scanner

Simple and powerful golang port scanner

https://github.com/Sinute/golang-portScan

Who needs any other port scanner when you can take this one file and compile it to run on both Linux and Windows? And better yet, change the number to workers from 5 to 300 now you can scan an entire /24 network in 3 seconds.

Note that the program seem to have an issue with "\r" and "\n", which suggests that the program may have been developed on a Mac. No problem, simply replace swap "\r" and "\n" in the source  and you are ready to go.

How to extract file from RPM packages without installing it

rpm2cpio myrpmfile.rpm | cpio -idmv

Download Java JRE JDK using wget script

wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F" "http://download.oracle.com/otn-pub/java/jdk/7u4-b20/jdk-7u4-linux-x64.tar.gz"

More Info get http://ivan-site.com/2012/05/download-oracle-java-jre-jdk-using-a-script/

Virtualbox high network latency with multiple CPU Cores

On Virtualbox 4.2, if you assign multiple cores to your VM, and you are running Linux Guest, you may experience high network latency (ssh typing is sporadic even on local GigE network).

This is a bug with Virtualbox.

The solution: Change your VM Ethernet type to PCnet. Then it works!

Here is the link to the bug report: https://www.virtualbox.org/ticket/10157