Linux Network Diagnosing

iwconfig

• wlan0 is WiFi
• eth0 is ethernet (cable)
• lo is localhost (I think)

lspci

lspci -nnk | grep -iA3 net (shows wifi chipset)

lsusb

ifconfig

ethtool is deprecated (gives error), use nmcli

• nmcli device wifi list
• nmcli device show
• nmcli device status

inxi -Fxx (general device information)

speedtest by Ookla (cli version, needs installation)

Then start punching keywords into Google.