Posted By

iMezouar on 11/23/15


Tagged

Bash network router clients


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List all devices connected to local network


 / Published in: Bash
 

Bash script to list all devices (ip and hostname) connected to your local network. Some formatting is done, and a summary is printed at the end. Requires nmap.

  1. #!/bin/bash
  2.  
  3. NETWORK="192.168.1.0/24"
  4. #Output formatting
  5. BOLD="\033[1m"
  6. WHITE_ON_GREY="\033[100;97m"
  7. RESET="\033[0m"
  8.  
  9. sudo nmap -sn -PO "$NETWORK" \
  10. | grep -oE "[a-zA-Z0-9\.\-]+\s\(([0-9]{1,3}\.){3}[0-9]{1,3}\)" \
  11. | sed 's/[)(]//g' \
  12. | awk -v bold="$BOLD" -v fg="$WHITE_ON_GREY" -v reset="$RESET" -f <(cat - <<-'EOD'
  13. BEGIN{
  14. OFS="\t";
  15. }
  16. { print $2,$1; }
  17. END{
  18. print bold fg NR" Hosts are up" reset;
  19. }
  20. EOD
  21. )

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