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Class notes

Wednesday, 1.15.25

Hre's a summary you may want to include in your notes:

  • use the wifi icon to get IP address and wifi speed (option)
  • use command-space to find terminal
  • use ifconfig to verify your IP address (more on this next)
  • ping to see if others are awake
  • ctrl-c to cancel
  • ctrl-z to halt
  • ssh admin@10.14.254.xyz for secure shell
  • sudo shutdown -r now to reboot
  • say some clever stuff to say some clever stuff
  • traceroute to determine path to servers or others
  • sudo: super user do (later you can try su, or "make me root")
Friday, 1.17.25
  • home/pi directory structure
  • sudo nano: create a file
  • ctrl-o: overwrite
  • ctro-x: exit
  • ls: list files (list)
  • ls -la: list even invisible, hidden files (list, long, all)
  • pwd: where am I? (print working directory)
  • cd: change directory
  • cd .. or cd up: cd up one level
  • nslookup
  • file browser
  • Herobrine game
  • more, less
  • install dnsutils: sudo apt install dnsutils -y
Wednesday, 1.22.25
  • note pages on weblog for terminal commands
Challenges:
  1. challenge #1: find herobrine on your machine
  2. challenge #2: create a new folder (mkdir) inside your Documents folder
  3. challenge #3: create a visible and and a hidden file inside this folder
  4. challenge #4: create a document inside a folder on the pi-alpha machine
  5. challenge #5: find the missing documents in your partner's machine
  6. challenge #6: create a folder and a document WITH PERMISSION in your partner's machine
  7. challenge #7: edit the file your partner has created on your machine
New commands:
  • mkdir: create a directory
  • shortcut: up arrow means repeat last command...
  • ls -la permissions: rwx, 777 format, 4-2-1
  • install apps: sudo apt install hardinfo -y
  • who also whoami
  • last last command, also the up arrow
  • top lists all processes, useful with kill (see later) (ctrl-x to quit)
  • ps: processes
  • ps -ax
  • kill: just what it sounds like
  • grep: ps -ax | grep chess  (on the mac)
  • history: shows recent commands like this, useful for retracing your steps or seeing who might have been in your machine
Network commands:
  • ifconfig
  • ip addr show
  • sudo raspi-config: enable ssh
  • chmod: change permissions
  • chmod +x: makes something executable
  • cat /proc/cpuinfo
  • traceroute (install)
  • netstat or ss
  • wavemon
  • speedtest-cli (install)
  • nmap -sP 10.14.88.0/24
  • sudo arp-scan 10.14.88.0/24
  • sudo iftop
  • DNS part 2: nslookup servers
  • IP addresses, subnet mask, gateways
  • cat6 cables, wifi, security, html, www, servers
  • nomachine
  • Mac network utility
  • install apache: sudo apt install apache2 -y
2.18.25: Wednesday----
Check these pi apps out:
Geany (inside your programming folder)
pi-apps (will show up in your accessories folder):
wget -qO- https://raw.githubusercontent.com/Botspot/pi-apps/master/install | bash
install sublime text
install angry IP scanner
visual code (editor): sudo apt install code

Migrated from Apple Server Wiki. Original page ID: T8L489p6