iankelling.org Git - automated-distro-installer/blob - chost

   1 #!/bin/bash
   2
   3 # chost: get canonical hostname
   4
   5 set -eE -o pipefail
   6 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   7
   8 host=$1
   9 addr=$(host $host)
  10 addr=${addr##* }
  11 h=$(host $addr)
  12 h=${h##* }
  13 echo ${h%%.*}