Home PC Rebuild

apropros - Useful for finding “appropriate” commands. i.e., apropros network will show useful commands related to networking.

man - RTM. Read The Manual. Enough said? i.e., man ls will let you read the manual for the command ls.

lshw - list hardware. Needs elevated privileges to properly probe all of the system's hardware. Also useful to pipe the output into a paginator for easy reading. i.e., sudo lshw | less will run the command with elevated privileges, then it pipes the output from that command into the text reader command less.