How to filter by IP address in grep?
You can use ip route show instead to get the information you want. Filter with this command for example: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.
How to display only network interface and IP address?
I’m not interested in all the information of ifconfig output, I just want to know the network interface with its respective ip address. How can display both data together, network interface and ip addres with just one command or script?
When to use IP instead of ifconfig?
It’s neither cleaner, nor shorter really, but I think you should use ip instead of ifconfig. It’s current, maintained, and perhaps more importantly for your purpose, it produces a consistent & parsable output. If you want the IPv4 address for eth0: which is in CIDR notation. If CIDR notation isn’t wanted it can be stripped:
Can you use grep with multiple IPs in eth0?
So whatever how many interfaces I’ll have and whatever their name, GREP will only grab the first having the MULTICAST option. It doesn’t spawn any process. If eth0 has multiple IPs and you are looking for a public one here is an example of ignoring the 2 most common internal IP address ranges.
How to display the IP address of the host?
Display the network address (es) of the host name. Note that this works only if the host name can be resolved. Avoid using this option; use hostname –all-ip-addresses instead. Display all network addresses of the host. This option enumerates all configured addresses on all network inter‐faces.
Is there a way to ignore an IP address?
The regex \\K [\\d.]+ says “throw away everything up to this point (\\K), and match as many numeric values followed by a dot in a row as possible”. This will therefore only match the IP address and ignore everything after it, including the shortform \\XX subnet mask.