show repositories on Ubuntu (and others)

 

 

debian

grep ^[^#] /etc/apt/sources.list /etc/apt/sources.list.d/*

 

https://www.networkworld.com/article/3305810/how-to-list-repositories-on-linux.html

 

Fix GPG signatures

sudo apt-key list  | grep "expired: " | sed -ne 's|pub .*/\([^ ]*\) .*|\1|gp' | xargs -n1 sudo apt-key adv --keyserver keys.gnupg.net --recv-keys

 

https://askubuntu.com/questions/650032/gpg-errorthe-following-signatures-were-invalid-keyexpired 

 

general apt structure is in:

/etc/apt

 

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ipconfig replaced by ip

 

ipconfig vs ip

show

ipconfig  ip addr show <interface>

                ip a

 

add

ifconfig eth0 add 192.168.80.174                ip a add 192.168.80.174 dev eth0

ifconfig eth0 add 192.168.80.174                ip a add 192.168.80.174 dev eth0

ifconfig eth0 del 192.168.80.174                 ip a del 192.168.80.174 dev eth0

ifconfig eth0 hw ether 00:0c:29:33:4e:aa    ip link set dev eth0 address 00:0c:29:33:4e:aa

Deprecated command	Replacement command(s)
arp	ip n (ip neighbor)
ifconfig	ip a (ip addr), ip link, ip -s (ip -stats)
iptunnel	ip tunnel
iwconfig	iw
nameif	ip link, ifrename
netstat	ss, ip route (for netstat-r), ip -s link (for netstat -i), ip maddr (for netstat-g)
route	ip r (ip route)

 

https://www.tecmint.com/ifconfig-vs-ip-command-comparing-network-configuration/ 

https://www.tecmint.com/ip-command-examples/ 

https://dougvitale.wordpress.com/2011/12/21/deprecated-linux-networking-commands-and-their-replacements/ 

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USB boot of Raspberry pi 4b

 

From this link

 https://www.tomshardware.com/how-to/boot-raspberry-pi-4-usb

 

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