Linux/ip: Difference between revisions
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sudo ip route add default via 192.168.1.1 dev eth0; | sudo ip route add default via 192.168.1.1 dev eth0; | ||
== | === Remove static IP === | ||
sudo ip addr del 192.168.1.2/24 dev eth0; | |||
== Bring interface online == | |||
ip link set dev <interface> up | ip link set dev <interface> up | ||
ip link set dev <interface> down | ip link set dev <interface> down | ||
== Interface Alias == | |||
Change name: (change enp39s0 to eth0) | |||
ip link set enp39s0 name eth0 | |||
Add Alias: (add eth0 to enp39s0) | |||
ip link property add dev enp39s0 altname eth0 | |||
ip link property del dev enp39s0 altname eth0 | |||
== Add Temporary IP to Interface == | |||
ip a add 192.168.178.2/24 dev eth0 | |||
== Route == | |||
Print routes: | |||
ip route | |||
Add default route: | |||
sudo ip route add default via 192.168.1.1 dev eth0; | |||
Add route: | |||
sudo ip route add 172.10.1.0/24 via 192.168.1.1 dev eth0; | |||
== Ways to get Private IP Address == | |||
=== ifconfig === | |||
ifconfig | |||
=== ip addr === | |||
# will need to be parsed | |||
ip addr | |||
ip a | |||
ip addr show | |||
ip -br -c a | |||
# parsed | |||
ip route get 1 | awk '{print $(NF-2);exit}' | |||
ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p' | |||
ip -o route get to 8.8.8.8 | sed -n 's/.*src \([0-9.]\+\).*/\1/p' | |||
read -r _{,} gateway _ iface _ ip _ < <(ip r g 1.0.0.0) ; printf '%-12s %s\n' gateway $gateway iface $iface ip $ip # <ref>https://stackoverflow.com/questions/13322485/how-to-get-the-primary-ip-address-of-the-local-machine-on-linux-and-os-x</ref> | |||
=== hostname === | |||
# will need to be parsed | |||
hostname -I | |||
# parsed | |||
hostname -I | cut -d' ' -f1 | |||
== Ways to Get IPv4 Public IP Address == | |||
=== curl === | |||
curl ip.ixota.com | |||
curl ifconfig.me | |||
curl api.ipify.org | |||
curl icanhazip.com | |||
=== wget === | |||
wget -qO- ipecho.net/plain | |||
=== dig === | |||
dig +short myip.opendns.com @resolver1.opendns.com | |||
== Ways to Get IPv6 Public IP Address == | |||
=== curl === | |||
curl https://i-p.show | |||
curl https://ipv6.icanhazip.com | |||
curl http://ip6only.me/api/ # not as clean | |||
curl -6 icanhazip.com | |||
curl -6 https://ifconfig.co | |||
curl -6 ip.sb | |||
curl -6 https://ipv6.icanhazip.com | |||
curl https://api64.ipify.org | |||
== keywords == | == keywords == | ||
Latest revision as of 23:07, 25 January 2026
Install ip tool
apt install iproute2
Add static IP
sudo ip addr add 192.168.1.2/24 dev eth0; sudo ip route add default via 192.168.1.1 dev eth0;
Remove static IP
sudo ip addr del 192.168.1.2/24 dev eth0;
Bring interface online
ip link set dev <interface> up ip link set dev <interface> down
Interface Alias
Change name: (change enp39s0 to eth0)
ip link set enp39s0 name eth0
Add Alias: (add eth0 to enp39s0)
ip link property add dev enp39s0 altname eth0 ip link property del dev enp39s0 altname eth0
Add Temporary IP to Interface
ip a add 192.168.178.2/24 dev eth0
Route
Print routes:
ip route
Add default route:
sudo ip route add default via 192.168.1.1 dev eth0;
Add route:
sudo ip route add 172.10.1.0/24 via 192.168.1.1 dev eth0;
Ways to get Private IP Address
ifconfig
ifconfig
ip addr
# will need to be parsed ip addr ip a ip addr show ip -br -c a
# parsed
ip route get 1 | awk '{print $(NF-2);exit}'
ip route get 1 | sed -n 's/^.*src \([0-9.]*\) .*$/\1/p'
ip -o route get to 8.8.8.8 | sed -n 's/.*src \([0-9.]\+\).*/\1/p'
read -r _{,} gateway _ iface _ ip _ < <(ip r g 1.0.0.0) ; printf '%-12s %s\n' gateway $gateway iface $iface ip $ip # [1]
hostname
# will need to be parsed hostname -I
# parsed hostname -I | cut -d' ' -f1
Ways to Get IPv4 Public IP Address
curl
curl ip.ixota.com curl ifconfig.me curl api.ipify.org curl icanhazip.com
wget
wget -qO- ipecho.net/plain
dig
dig +short myip.opendns.com @resolver1.opendns.com
Ways to Get IPv6 Public IP Address
curl
curl https://i-p.show
curl https://ipv6.icanhazip.com curl http://ip6only.me/api/ # not as clean
curl -6 icanhazip.com curl -6 https://ifconfig.co curl -6 ip.sb curl -6 https://ipv6.icanhazip.com curl https://api64.ipify.org