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This is a simple python script  based on some former rwhois code. It shows us an easy way on how…

In virtualized environment, we sometimes need to generate MAC address for each virtual machine at the time of creation. Since…

As we know there’s a kind of read-only variables in bash in common linux system, typically $BASH_COMPLETION and $BASH_COMPLETION_DIR are…

CPAN (Comprehensive Perl Archive Network) is a large repository of Perl modules, and it’s officially supported by Perl Community. Standard…

In some sort of problems, ext3 goes read-only to protect the filesystem against further damages. What could cause such a…