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 ...

Hi folks, I'm writing a shell script to validate the format of an IP address, and was wondering the best way to go about doing this. All help greatly appreciated. Aren't IP addresses made up from ...

The message "Invalid IP Address" indicates a problem with your computer's network setup. Every computer that uses an Ethernet-type network, such as the Internet, has an Internet Protocol address that ...