• Edit
  • Delete

Ubuntu 18.04 show IP on login prompt /etc/issue

  • cp /etc/issue /etc/issue.bak
  • vi /etc/network/if-up.d/update-issue
    • #!/bin/sh
      # Add IP and MAC to /etc/issue 
       
      VERSION=$(cat /etc/issue.net)
      IPADDR=$(hostname -I | tr " " "\n" | grep -v "^$" | sort -t . -k 1,1n | head -1 | tr "\n" " ")
      MAC=$(cat /sys/class/net/*/address | head -n 1)
      
      echo "$VERSION \\\n \\l $IPADDR $MAC\n" > /etc/issue
  • chmod 0755 /etc/network/if-up.d/update-issue

test

  • /etc/network/if-up.d/update-issue
  • cat /etc/issue