9.8.26 notes

9.8.26

You should be comfortable with everything here

• MC/FR quiz: exam in a box
• scp python code: laptop to pi
  • scp <filename> user@<ipaddress>:/<location>
• mv, cp, rm, cat, less, more
  • mv is move, also change name
  • cp is copy, from one place to another
  • rm is remove, rm -frd removes directories too
  • cat, less and more look inside files
• useradd
• su root
• sudo nano /etc/interfaces
• man pages
• $ vs # prompt
• powershell=windows shell
• uname -h for help
• apropos usb = keyword search
• apt install (see below)
• dpkg -i 

wget: installing stuff

• wget http://ftp.us.debian.org/debian/pool/main/c/cmatrix/cmatrix_2.0-6+b1_arm64.deb
• ls -lh *.deb
• dpkg-deb --info cmatrix_*.deb
• sudo dpkg -i cmatrix_*.deb
• cmatrix

using apt:

• sudo apt update
• sudo apt install sl
• sl 

What's the difference?

• wget     → download something from the Internet
• .deb     → Debian software package
• dpkg -i  → install a local package
• cmatrix  → run what we installed
• dpkg -L  → see what files were installed

next: network structure review

• permissions
• htop
• firewalls-routers
• tcp/ip stack
• dns
• dhcp
• /etc/host file
• NAT
• inbound port mapping