Managing Your Digital Stuff - Backups
http://edu-observatory.org/olli/Apple_Resources/Backups.html
Apple Resources - Sharing Files
http://edu-observatory.org/olli/Apple_Resources/Sharing_Files.html
Managing Your Digital Stuff - Updates
http://edu-observatory.org/olli/Apple_Resources/Updates.html
Apple Resources - Command Line Tools
http://edu-observatory.org/olli/Apple_Resources/Command_Line_Tools.html
What's my IPv4 address (as seen brom the outside)?
timelimit -q -t 1 dig -4 -t a +short myip.opendns.com @resolver1.opendns.com
What's my IPv6 address?
timelimit -q -t 1 dig -6 -t aaaa +short myip.opendns.com @resolver1.opendns.com
What devices are on my local area network?
arp -an
sudo nmap -T5 -sP `en6`/24 | sed s."Nmap"."\nNmap".g | sed s."Nmap scan report for"." sudo nmap -sS -T5".g
How long since my computer rebooted? macOS version?
uptime
sw_vers
Secure Shell (remote login) to another computer
ssh spooner1@quebec.he.net
ssh spooner1@65.49.50.2
ssh spooner1@2001:470:0:1d5::2
Check Mediacom
ty mc
mc
Check the Internet
ty wan
wan
Check my internet route to dns.google
mtr --aslookup --show-ips -4 dns.google
mtr --aslookup --show-ips -6 dns.google
cal
sam.wormley@gmail.com