shell 批量远程主机执行命令

 [yunwei@Y24-209 ~]$cat ls.sh 
#!/bin/bash
ip55=`cat ip1`

for i in $ip55;do
  ping -c 1 $i
  if [ $? -eq 0 ];then
    ssh -t $i "ls"
    if [ $? -eq 0 ];then
        echo -e "$i" >> ok.ip
    else
        echo -e "$i" >> fail.ip
    fi
  else 
    echo -e "$i" >> fail.ip
  fi
done