command-not-found.com

Dump traffic on a network. More information: <https://www.tcpdump.org>.

Displays a summary of historical uptime records. More information: <https://manned.org/uprecords>.

Platinum Searcher. A code search tool similar to ag. More information: <https://github.com/monochromegane/the_platinum_searcher>.

knife

Interact with a Chef server from a local Chef repo. More information: <https://docs.chef.io/knife.html>.

Python-based syntax highlighter. More information: <https://pygments.org/docs/cmdline/>.

curl

Transfers data from or to a server. Supports most protocols, including HTTP, FTP, and POP3. More information: <https://curl.se/docs/manpage.html>.

Display information from WebAssembly binaries. More information: <https://github.com/WebAssembly/wabt>.

Download videos from YouTube and other websites. More information: <http://rg3.github.io/youtube-dl/>.