Occasionally I want to get either my local or public IP address and wanted to stop having to parse command outputs or Google for it.

Nick Janetakis's blog provides insights into web development, Docker, and technology tutorials. Readers can find articles covering topics such as containerization, cloud computing, and serverless architectures. Additionally, they can learn about web development frameworks, deployment strategies, and best practices for building scalable applications.

Nick Janetakis

A walkthrough for building a cross-platform `myip` shell script that retrieves both local and public IP addresses from the command line. For the public IP, it uses `curl` against ifconfig.me with flags for reliability. For the local IP on Linux, it uses `ip route get 1.1.1.1` with a Perl regex to extract the source address without making an actual external network call — verified using `strace`. The macOS equivalent uses `route -n get 1.1.1.1` piped through `awk` and `ipconfig getifaddr`. The final script supports `-l` and `-p` flags to print and copy either address to the clipboard.

Quickly Get Your Local and Public IP Address from the Command Line — Nick Janetakis