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如何收回这一负载值
原标题:How to recover this load value

我想要创建一个脚本, 在一个柱子里运行来执行一项任务, 如果某个 OpenVZ 机器有很高的负荷, 它将会被重新启动 。

要做到这一点, 我需要得到每个 VM 的 CPU 负载的最后值。 我得到这个命令 :

vzlist - o ctid, l平均 & gt; loads. txt

  CTID       LAVERAGE
  1001 0.00/0.00/0.00
  1002 0.58/0.62/0.56
  1009 0.00/0.00/0.00
  1060 0.01/0.05/0.07
  1063 0.00/0.03/0.00
  1066 0.00/0.00/0.00
  1072 0.00/0.00/0.00
  1083 11.18/5.89/2.35

现在,我要选择要放入变量的第3个负载值 。

我试过这个代码:

读行; do 时, 猫咪装入. txt {}\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\可以\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\

回声 ${行:15:4}

已完成完成完成完成完成完成完成完成完成

但我对最后一行有意见 因为我得到价值

/2.3

有人能帮我放一个变量吗?

谢谢 谢谢

最佳回答

尝试 :

cat loads.txt | while read line; do 
  echo ${line} | cut -d /  -f3;
done
问题回答

暂无回答




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