cool_functions.sh

#!/bin/bash
# Note: Works with bash 4.x and above only #
# STOLEN FROM: http://www.cyberciti.biz/tips/unix-linux-bash-shell-script-wrapper-examples.html
# curl -I http://cyberciti.biz/
# ping -v -c 2 !!:2
# host -t aaaa !!:4
# host -t mx !!:3
# host -t a ftp://nixcraft.com/
# host -a ftp://nixcraft.com/
# ping 8.8.8.8
# host 8.8.8.8

_getdomainnameonly(){
	local h="$1"
	local f="${h,,}"
	# remove protocol part of hostname
        f="${f#http://}"
        f="${f#https://}"
	f="${f#ftp://}"
	f="${f#scp://}"
	f="${f#scp://}"
	f="${f#sftp://}"
	# remove username and/or username:password part of hostname
	f="${f#*:*@}"
	f="${f#*@}"
	# remove all /foo/xyz.html*  
	f=${f%%/*}
	# show domain name only
	echo "$f"
}
 
 
ping(){
	local array=( $@ )  		# get all args in an array
	local len=${#array[@]}          # find the length of an array
	local host=${array[$len-1]}     # get the last arg
	local args=${array[@]:0:$len-1} # get all args before the last arg in $@ in an array 
	local _ping="/bin/ping"
	local c=$(_getdomainnameonly "$host")
	[ "$t" != "$c" ] && echo "Sending ICMP ECHO_REQUEST to \"$c\"..."
	# pass args and host
	$_ping $args $c
}
 
host(){
	local array=( $@ )
	local len=${#array[@]}
	local host=${array[$len-1]}
	local args=${array[@]:0:$len-1}
	local _host="/usr/bin/host"
	local c=$(_getdomainnameonly "$host")
	[ "$t" != "$c" ] && echo "Performing DNS lookups for \"$c\"..."
  	$_host $args $c
}