linux - 如何将 echo 语句和 arp 语句的输出放在一行中？

Question

如何在一行中获得输出“echo”和“macaddress”？这是我得到的:

ipRange="192.168.0."
macaddress= arp  | grep -w  "$ipRange$1" | awk '{print $3,$1}' 

ping -c1 "$ipRange$1" > /dev/null
         if [ $? -eq 0 ]; then
echo  "deze host met mac address en ip address is up $macaddress"
else 
echo "het is down"
fi

这是输出:

VirtualBox ~ $ bash test2.sh 149
e0:b9:a5:f8:24:c3 192.168.0.149
deze host met mac address en ip address is up 

Answer 1

这应该在单行输出

ipRange="192.168.0."
macaddress=$(arp  | grep -w  "$ipRange$1" | awk '{print $3,$1}')

ping -c1 "$ipRange$1" > /dev/null
         if [ $? -eq 0 ]; then
echo  "deze host met mac address en ip address is up $macaddress"
else 
echo "het is down"
fi