执行包含重定向字符的bash行（命令）

Question

How can I execution a bash line(command) that contains the redirection characters? For instance, the following line can't be execution.

home>CMD="ls -l > out"
home>$CMD
ls: cannot access >: No such file or directory
ls: cannot access out: No such file or directory

Thanks for your help in advance.

Answer 1

eval $CMD将做您想要的。

Answer 2

You could use eval, but it is not recommended. If the purpose of storing the command in a variable is to execute it multiple times, it is better to use a function.

Example:

dols() {
    ls -l > out
}

dols

See also: I'm trying to put a command in a variable, but the complex cases always fail!