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hey guys, i'm trying to figure out how to find the host IP address using shell commands.
So far I have:
hostname -i
ip addr show
These both give me different IPs, which one is the correct host ip? and is it internal or external? from what I understand this is the internal IP of the system
Ifconfig shows the same information as ip addr show.
It show all addresses both the lo and your physical ethernet adapter
Hostname -i shows 127.0.0.1 since your hostname is not resolved because your not running an internal DNS server. See hostname man pages for more information.
127.0.0.1 is the local loop back adapter which is internal or virtual.
Ifconfig shows the same information as ip addr show.
It show all addresses both the lo and your physical ethernet adapter
Hostname -i shows 127.0.0.1 since your hostname is not resolved because your not running an internal DNS server. See hostname man pages for more information.
127.0.0.1 is the local loop back adapter which is internal or virtual.
hostname -i doesn't show me 127.0.0.1 it is showing me an address like:
192.168.x.x which i'm assuming is just a local ip?
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,680
Rep:
ifconfig can be run by a non-root user by using the full path "/sbin/ifconfig" -- a non-root user won't be able to change anything but can list things all the same.
It really is worth reading up on how IP addresses work (no need to remember any calculations and the like though) as it can be helpful to know.
ifconfig can be run by a non-root user by using the full path "/sbin/ifconfig" -- a non-root user won't be able to change anything but can list things all the same.
It really is worth reading up on how IP addresses work (no need to remember any calculations and the like though) as it can be helpful to know.
ah, okay! "/sbin/ifconfig" worked for me, showing me the ethernet and loopback info. So looking at this, and based on what michael said it seems that this is showing the host IP which is a local/internal IP, correct?
Also it seems that it is showing the same address as
hostname -i
except it's cleaner since it shows nothing but the IP.
Distribution: Debian Sid AMD64, Raspbian Wheezy, various VMs
Posts: 7,680
Rep:
Quote:
Originally Posted by goofygoober
ah, okay! "/sbin/ifconfig" worked for me, showing me the ethernet and loopback info. So looking at this, and based on what michael said it seems that this is showing the host IP which is a local/internal IP, correct?
Also it seems that it is showing the same address as
hostname -i
except it's cleaner since it shows nothing but the IP.
Yes, it shows the loopback IP address and any local addresses also. The 192.xxxxxx address is always going to be a LAN address which is routed to the internet mostly using NAT. Have a look using google about IP addresses and how things like rooting and subnetting work -- as mentioned above not to learn exactly how the numbers work but to give an idea of how things are connected.
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linux - Finding host IP address
