virsh销毁&> /dev/null仍然显示空输出

Question

所以我有个烦人的问题。我有一个脚本可以更改给定文本文件上的一些配置。要更改该特定文件，我必须首先销毁KVM上的虚拟机来宾。问题是，每次它停止时，脚本的输出中都有一个空格，如您所见：

vfp-8vr Found!
Check if vfp-8vr has stopped ................................. [OK]

Check if vfp-8vr node has changed ............................ [OK]
Check if vfp-8vr has started ................................. [OK]
vfp-9vr Found!
Check if vfp-9vr has stopped ................................. [OK]

Check if vfp-9vr node has changed ............................ [OK]
Check if vfp-9vr has started ................................. [OK]
vfp-10vr Found!
Check if vfp-10vr has stopped ................................. [OK]

Check if vfp-10vr node has changed ............................ [OK]
Check if vfp-10vr has started ................................. [OK]

我在我的脚本中包含了/dev/null，因为它隐藏了输出，理论上它可以工作，但是仍然有一个银行空间显示，不管.

for i in "${arr[@]}"
do
  if [[ -n "$i" ]]
     then
         echo "$i Found!"

         virsh destroy $i &> /dev/null
         echo -e "Check if \e[32m$i\e[0m has stopped ................................. [OK]"

         virsh numatune $i $opt_node0
         echo -e "Check if \e[32m$i\e[0m node has changed ............................ [OK]"

         virsh start $i &> /dev/null
         echo -e "Check if \e[32m$i\e[0m has started ................................. [OK]"

  fi
done

有没有人知道我如何在后台运行virsh destroy，而不显示输出中那个烦人的空间呢？

免责声明:我也使用过[Command] > /dev/null 2>&1 &，也使用了相同的东西:/

Answer 1

愚蠢的我，我忘记将/dev/null添加到命令中：

Check if vfp-8vr has stopped ................................. [OK]
Check if vfp-8vr node has changed ............................ [OK]
Check if vfp-8vr has started ................................. [OK]
vfp-9vr Found!
Check if vfp-9vr has stopped ................................. [OK]
Check if vfp-9vr node has changed ............................ [OK]
Check if vfp-9vr has started ................................. [OK]
vfp-10vr Found!
Check if vfp-10vr has stopped ................................. [OK]
Check if vfp-10vr node has changed ............................ [OK]
Check if vfp-10vr has started ................................. [OK]

谢谢社区！