Question

团队

我有多个变量值需要检查并循环运行，但是当bash上没有设置此类变量时，我看不到其他任何执行。

#!/bin/bash
if [[ $TEST_PERF_CLASS="DFC" || $TEST_PERF_CLASS="GFC" && 
${!K8S_Node_Name}="ALLCORDONED" ]]; then
  for node in ${K8S_Node_Name[@]}; do
    kubectl describe $node
  done
else
  printf "Invalid node or No Variables are set in env yet."
fi

预期输出：

Invalid node or No Variables are set in env yet.

实际输出：

prints nothing.. << empty

Answer 1

=周围的空白很关键：

if [[ $TEST_PERF_CLASS = "DFC" || $TEST_PERF_CLASS = "GFC" && ${!K8S_Node_Name} = "ALLCORDONED" ]]; then
  for node in ${K8S_Node_Name[@]}; do
    kubectl describe $node
  done
else
  printf "Invalid node or No Variables are set in env yet."
fi

否则，您只是在测试3个非空字符串实际上是非空的。您原来的命令相当于

if [[ -n $TEST_PERF_CLASS="DFC" || -n $TEST_PERF_CLASS="GFC" && -n ${!K8S_Node_Name}="ALLCORDONED" ]]; then

bash多个OR和AND运算符不产生结果

1 个答案: