Ping is a well-known utility in the IT industry, and its existing functionality is already to identify live hosts. However, it was built with the intention of discovering whether a single host is alive and not as a scanning tool. The bash script in this recipe essentially does the same thing as using ping on every possible IP address in a /24 CIDR range. However, rather than doing this tedious task manually, bash allows us to quickly and easily perform this task by passing the task sequence through a loop.