shell函数不能直接返回字符串,用以下三种方式代替! A Bash function can’t return a string directly like you want it to. You can do three things: Echo a string Return an exit status, which is a number, not a string Share a variable This is also true for some other shells. Here’s how to do each of those options: 1. Echo strings lockdir="somedir" testlock(){ retva… Read