• wget (GNU)
  • curl (cURL community)
  • grep (GNU)
  • sed (GNU)
  • vim: light basics (command mode, insert mode, directional navigation, exiting file from command mode, saving from command mode, searching for words in command mode)
  • awk
  • mail-utils (GNU)
  • systemctl (systemd Red Hat)
  • journalctl (systemd Red Hat)

will also learn

  • git (Linus Torvalds and git community)

have already learned

  • find (GNU)

  • cat (GNU)

  • less (GNU)

  • way more link back

  • Userspace applications

    • where do they come from?
      • GNU
      • other sources (many of which are open source)