Which command provides a summary of hardware and software drivers in use?

The command that provides a summary of hardware and software drivers in use is 'lsmod'. This command lists the currently loaded kernel modules, showcasing an overview of the drivers that are active at the moment. Each line of output corresponds to a module that is loaded in memory, along with additional information, such as the size of the module and any modules that depend on it.

When you run 'lsmod', you're able to get a clear picture of what drivers and modules are in use, which can be crucial for troubleshooting hardware issues or understanding system performance. In contrast, other options serve different purposes: 'modinfo' provides detailed information about a specific module, 'insmod' is used to insert a new module into the kernel, and 'depmod' is responsible for generating module dependency files but does not directly summarize current usage. This is why 'lsmod' is the most appropriate choice for summarizing active hardware and software drivers.