bash - 从嵌套的 for 循环中跳出

Question

我想知道是否有办法让 for 循环层叠起来:

check_mac_address() {
    local mac="$1"
    for wunit in `get_wunit`; do
        for iuc in `get_iuc`; do            
            for assoc_mac in `get_iuc $wunit $iuc`;do
                if [ "$assoc_mac" = "$mac"]; then 
                    local int_type="WF" 
                    break #---> break from all loop  
                else
                    int_type="ETH"
                    break #---> break from all loop  
                fi 
            done
        done
    done
}

感谢任何帮助

Answer 1

break 接受一个参数，该参数指定要中断多少层周围循环；在你的情况下，我相信它是 3:

http://www.gnu.org/software/bash/manual/bashref.html#Bourne-Shell-Builtins