我遇到一个脚本 里面有这样的代码
arr=($p)
np=${#arr[*]}
p 是一连串的整数对 : "0,1,2,4,3,5,5" 等。 首先, 我不完全确定 () 在第一行是做什么的, 但我认为它只是把事情变成一种连带式的阵列? 这也许也不正确...。 但更重要的是, 我完全不知道第二行是做什么的。
在第一个翻转结果为数组的括号中,结果将从 0 开始分配索引,并按照 IFS (默认包括白空间) 进行拆分。 ${arr[*]}{{{{{code> 给出数组中元素的数量。
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