| #!/bin/sh | |
| # This script uses the ip utility to monitor all the ipv6 addresses. Any change | |
| # that occurs will trigger an echo to stdout or the file received as argument, | |
| # if there is any | |
| if [ $# -gt 1 ]; then | |
| echo "Usage: $("basename $0") [output_filename]" | |
| exit 1 | |
| fi | |
| ip -oneline monitor address | | |
| while read line; do | |
| if [ $# = 1 ]; then | |
| echo >"$1" | |
| else | |
| echo "ip monitor triggered" | |
| fi | |
| done |