I've recently written about using bash arrays and bash regular expressions, so here's a more useful example of using them to test IP addresses for validity. To belabor the obvious: IP addresses are 32 ...

Knowing how an IP address identifies a host on a network can be confusing. Before you begin calculating various addresses, you should know the fundamentals of IP addressing. Todd Lammle describes this ...

Dynamic Host Configuration Protocol, or DHCP, makes setting up an office network simple, but several minor drawbacks come with that simplicity. One common issue you may encounter is the difficulty of ...