The ip addr is no longer at $NF it is now located at $7. NOTE 1: The output of ip route get has changed since this answer was posted. The short answer is: ip route get 8.8.8.8 | sed -n '/src/' If i use the arp -a command I receive the correct mac address for all connected pcs but I cannot ping anything except the local address. Let’s take a look at searching for IP addresses in log files using grep and how you can use regular expressions to search for addresses in different situations. I have setup netowkring but am unable to ping any local network pcs or the default gateway. Grep is a command-line tool for searching text in files using regular expression syntax. If you care about reaching the public internet, using Google's 8.8.8.8 DNS server is pretty standard. This often means you have to grep an IP address from a log file. Depending on what IP you are trying to reach, "my own ip address" (OP's words) will be different. To see information about NIC named eth0 ip address, enter: ip addr show eth0. You trim the output of ip route to get only the source IP. Can any one please help me I need a output of '192.168.1. The following ip command will show all ip address assigned to your system: ip addr show. Inet 192.168.100.110 netmask 255.255.255.0 broadcast don't mean to be a jerk, but there really is a right way and this is it. Inet 127.0.0.1 netmask broadcast 255.0.0.0 Docker adds a virtual interface docker0 that usually has the IP 172.17.0.1, if you want to omit this IP along with the 'localhost' one, change the expression grep -v 127.0.0.1 to take into account the another IP. Inet 192.168.100.110 netmask 255.255.255.0 broadcast 192.168.100.255 Linux: Grep IP addresses Posted on Apby hb I very often have to either find log entries related to a specific IP address or just find IP addresses in a log file or process a file containing IP addresses and other things. all the newline separated matches are being passed as a single argument to ping which takes only a single address at a time as argument hence it is failing. Note: The script is based on the output of ifconfig in Ubuntu 16.04. Two, you need to double the in the echo so that it is sent to the shell, not expanded first by make. I split up the 3 classes of private ip address spaces, with each another piped grep command for simplicity you could join them all with a and have only the two grep commands. ifconfig | head -19 | sed 'wlan0|\eth0' | awk '' Two issues: one, each separate command in a Makefile recipe is executed in a separate shell, so you need to 'merge' them. I've come so close, so far i have tried about a million possible combinations but I'm close to exhausted, this is some of what i have tried. Inet 192.168.1.000 netmask 255.255.255.0 broadcast 192.168.1.255 The following ip command will show all ip address assigned to your system: ip addr show. I'm trying to learn as much as possible about Linux, I'm currently stuck at trying to grab specific parts of my ifconfig text display so it looks exactly like this: eth0:
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