For showing IP Address before the login prompt on Ubuntu env. Copy the following script to /etc/network/if-up.d/ and /etc/network/if-post-down.d/ folders. And don’t forget to mark them as executables.

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For showing IP Address before the login prompt on Ubuntu env. Copy the following script to /etc/network/if-up.d/ and /etc/network/if-post-down.d/ folders. And don’t forget to mark them as executables.

✓ Published0🌍 Public

Last edited Sep 17, 2014

Created on Sep 17, 2014

This example shows a Linux system displaying the Ubuntu version, hostname, and IP address before the login prompt by writing this information to the `/etc/issue` file. The script uses `cat /etc/issue.net` to copy the OS release banner, `hostname` to append the machine name, and `ip address show eth0` piped through `awk` and `cut` to extract the IPv4 address from the `eth0` interface. It is intended for placement in `/etc/network/if-up.d/` and `/etc/network/if-post-down.d/` directories, which run the script upon network interface state changes. The code relies solely on standard shell utilities and system files, with no external graphics or data-visualization libraries.

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