bash - 如何在 Bash 中做复杂的条件（'and' &&、'or' || ...的混合）

Question

如何在 Bash 中完成类似以下的操作？

if ("$a" == "something" || ($n == 2 && "$b" == "something_else")); then
  ...
fi

score 31 · Accepted Answer

你几乎明白了：

if [[ "$a" == "something" || ($n == 2 && "$b" == "something_else") ]]; then

实际上，由于运算符优先级，括号可以省略，因此也可以写为

if [[ "$a" == "something" || $n == 2 && "$b" == "something_else" ]]; then

score 2 · Accepted Answer

2

if [[ "$a" == "something" ]] || [[ $n == 2 && "$b" == "something_else" ]]; then
  ...
fi

于 2012-04-23T22:04:39.507 回答

2 回答 2