Record time until host is up

bootime

#! /bin/sh

# Record time until host is up
# Copyright (C) 2014 Matous J. Fialka, <http://mjf.cz/>
# Released under the terms of The MIT License

# Depends on the humantime script:
# https://gist.github.com/mjf/1079421#file-humantime

if [ $# -ne 1 ]
then
	echo "Usage: ${0##*/} [host]"
	exit 0
fi

s=`date +%s`

while :
do
	if ping -qc1 "$1"
	then
		break
	fi
done

e=`date +%s`

humantime "$((e - s))"