Linux get ip by hostname

How do I find my computer’s IP address using the bash shell?

Every now and again, I need to start the Django development server, and have it viewable by other machines on my network, as described here: http://docs.djangoproject.com/en/dev/ref/django-admin/#runserver My machine’s IP address tends to change every now and again, so I’d like to have a little shell alias or something that spits out the manage.py command with my machine’s current IP address, maybe like this:

python manage.py runserver $(COMMAND TO FIND MY MACHINE’S IP ADDRESS GOES HERE):8000 

18 Answers 18

ifconfig en0 | grep inet | grep -v inet6 

Output of above is expected to be in the following form:

inet 192.168.111.1 netmask 0xffffff00 broadcast 192.168.111.255

Add an awk statement to print the second column to avoid using cut (awk is a pretty standard unix tool):

ifconfig en0 | grep inet | grep -v inet6 | awk '' 

I use the following to get the current IP when on a LAN where the first few numbers of the IP are always the same (replace 192.168.111 with your own numbers):

ifconfig | grep 192.168.111 | awk '' 

To get the ip of another machine that you know the name of, try (replace hostname and 192.168.111 with your own values):

ping -c 1 hostname | grep 192.168.11 | grep 'bytes from' | awk '' | sed 's/://g' 

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linux get ip by hostname

nslookup is one of the primary UNIX commands to find the IP address from the hostname and again from hostname to IP address. Similar to ping you can also, use the nslookup command to find the IP address of Both localhost and remote host in any UNIX-based system.

1. How do I find the IP address of a hostname in terminal?
2. How do I find the IP address on Linux?
3. Can hostname be an IP address?
4. How do I find my host IP address?
5. How do I find my hostname in terminal?
6. How do I resolve an IP address?
7. What is the ipconfig equivalent in Linux?
8. How do I manually assign an IP address in Linux?
9. What is the ipconfig command for Linux?
10. What is a hostname in a URL?
11. What is TCP IP address or hostname?
12. What is a valid hostname?

How do I find the IP address of a hostname in terminal?

In an open command line, type ping followed by the hostname (for example, ping dotcom-monitor.com). and press Enter. The command line will show the IP address of the requested web resource in the response. An alternative way to call Command Prompt is the keyboard shortcut Win + R.

How do I find the IP address on Linux?

1. Method 1: Get website IP address with dig command. Dig is a DNS lookup utility. .
2. Method 2: Use nslookup command to find IP address of website in Linux. .
3. Method 3:Get IP address of website using host command. .
4. Method 4: Get website’s IP address with ping command in Linux.

Can hostname be an IP address?

In the Internet, a hostname is a domain name assigned to a host computer. . This kind of hostname is translated into an IP address via the local hosts file, or the Domain Name System (DNS) resolver.

How do I find my host IP address?

First, click on your Start Menu and type cmd in the search box and press enter. A black and white window will open where you will type ipconfig /all and press enter. There is a space between the command ipconfig and the switch of /all. Your ip address will be the IPv4 address.

How do I find my hostname in terminal?

1. Press the Start button, type cmd , then press Enter to start up a command shell.
2. Type ipconfig /all.
3. The hardware address will be listed under «Physical Address»

How do I resolve an IP address?

1. To check the host name on the operating system, in a command prompt, type: hostname. .
2. Verify the computer name information: Right-click My Computer. .
3. Check the host name configured on the DNS server. Run the following command: .
4. Check that the host is responding. You can run the following command:

What is the ipconfig equivalent in Linux?

The ifconfig command works in the same way for finding the IP address of a device using terminal in Linux as ipconfig command works for finding the IP address of a device using command prompt in Windows.

How do I manually assign an IP address in Linux?

1. Set Your IP Address. ifconfig eth0 192.168.1.5 netmask 255.255.255.0 up. Related. Masscan Examples: From Installation to Everyday Use.
2. Set Your Default Gateway. route add default gw 192.168.1.1.
3. Set Your DNS Server. Yes, 1.1. 1.1 is a real DNS resolver by CloudFlare. echo «nameserver 1.1.1.1» > /etc/resolv.conf.

What is the ipconfig command for Linux?

Related Articles. ifconfig(interface configuration) command is used to configure the kernel-resident network interfaces. It is used at the boot time to set up the interfaces as necessary. After that, it is usually used when needed during debugging or when you need system tuning.

What is a hostname in a URL?

The hostname property of the URL interface is a USVString containing the domain name of the URL.

What is TCP IP address or hostname?

Host names consist of a single set of characters and generally are administered locally. In flat TCP/IP networks, each machine on the network has a file (/etc/hosts) containing the name-to-Internet-address mapping information for every host on the network.

What is a valid hostname?

Valid characters for hostnames are ASCII(7) letters from a to z, the digits from 0 to 9, and the hyphen (-). A hostname may not start with a hyphen. Hostnames are often used with network client and server programs, which must generally translate the name to an address for use.

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5 ways to resolve hostname to ip address in linux

We all know we can use ping command to get the ip address of a hostname , but sometimes we need to do it for multiple hosts.

This post shows you how to resolve hostname to ip address in several ways , like use command ping or getent or host ,etc, so that we can do it via bash script.

Method 1: use ping command

ping command is always our friend , it’s very reliable and intuitive .

ping -q -c1 -t1 yourhostname | tr -d '()' | awk '/^PING/' 

Let me explain above command a little bit:

• -q Quiet output. Nothing is displayed except the summary lines at startup time and when finished
• -c1 only send one ping packet
• -t1 set TTL to 1 , if not pingable return immediately
• tr -d ‘()’ removed Parentheses around ip address
• awk . print ip address

Method 2: use getent command

The getent command displays entries from databases supported by the Name Service Switch libraries, which are configured in /etc/nsswitch.conf.

getent ahostsv4 www.example.com 

getent ahostsv6 www.yahoo.com 

getent ahosts www.yahoo.com 

j@ubuntu:~/tmp/1030$ getent ahostsv4 www.yahoo.com 180.222.102.202 STREAM new-fp-shed.wg1.b.yahoo.com 180.222.102.202 DGRAM 180.222.102.202 RAW 180.222.102.201 STREAM 180.222.102.201 DGRAM 180.222.102.201 RAW 

Here the domain has 2 IP addresses and a CNAME(kind of alias) new-fp-shed.wg1.b.yahoo.com points to one of these 2 IP addresses randomly.

So to get one of the IP address directly, below command can be used.

getent ahostsv4 www.bing.com | grep STREAM | head -n 1 | awk '' 

Method 3: use host command

host is a simple utility for performing DNS lookups. It is normally used to convert names to IP addresses and vice versa. When no arguments or options are given, host prints a short summary of its command line arguments and options.

j@ubuntu:~/tmp/1030$ host www.yahoo.com www.yahoo.com is an alias for new-fp-shed.wg1.b.yahoo.com. new-fp-shed.wg1.b.yahoo.com has address 180.222.102.202 new-fp-shed.wg1.b.yahoo.com has address 180.222.102.201 new-fp-shed.wg1.b.yahoo.com has IPv6 address 2406:2000:ec:c58::3001 new-fp-shed.wg1.b.yahoo.com has IPv6 address 2406:2000:ec:c58::3000 

Similarly we can use below command to get one of the IP v4 address

j@ubuntu:~/tmp/1030$ host www.yahoo.com | grep "has address" | head -1 |awk '' 180.222.102.202 

Method 4: use dig command

Dig is a flexible tool for interrogating DNS name servers. It performs DNS lookups and displays the answers that are returned from the name server(s) that were queried. Most DNS administrators use dig to troubleshoot DNS problems because of its flexibility, ease of use and clarity of output. Other lookup tools tend to have less functionality than dig.

j@ubuntu:~/tmp/1030$ dig +short www.yahoo.com new-fp-shed.wg1.b.yahoo.com. 180.222.102.201 180.222.102.202 

Method 5: use resolveip command

The resolveip utility resolves host names to IP addresses and vice versa. This command is easy to use but seems not available by default.

j@ubuntu:~/tmp/1030$ resolveip www.yahoo.com IP address of www.yahoo.com is 180.222.102.201 IP address of www.yahoo.com is 180.222.102.202 

Method 6 : use command nslookup

Nslookup is a program to query Internet domain name servers.

j@ubuntu:~/tmp/1030$ nslookup www.yahoo.com Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: www.yahoo.com canonical name = new-fp-shed.wg1.b.yahoo.com. Name: new-fp-shed.wg1.b.yahoo.com Address: 180.222.102.201 Name: new-fp-shed.wg1.b.yahoo.com Address: 180.222.102.202 Name: new-fp-shed.wg1.b.yahoo.com Address: 2406:2000:ec:c58::3000 Name: new-fp-shed.wg1.b.yahoo.com Address: 2406:2000:ec:c58::3001 j@ubuntu:~/tmp/1030$ 

To get one of the IP v4 addresses only , you can try below command:

j@ubuntu:~/tmp/1030$ nslookup www.yahoo.com | awk '/^Address: / < print $2 ; exit >' 180.222.102.202 

Bash script example

#!/bin/bash hostname=www.yahoo.com ip=$(ping -q -c1 -t1 $hostname 2>/dev/null | tr -d '()' | awk '/^PING/') if [ -n "$ip" ]; then echo IP: $ip else echo "Could not resolve hostname $hostname." fi 

Where 2>/dev/null suppressed errors.

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