是否可以從上一個案例來執行下一個 PS3 案例？

Question

假設我有這樣的腳本：

#!/bin/bash
PS3='Select option: '
options=("Option one" "Option two")
select opt in "${options[@]}"
do
    case $opt in
    "Option one")
    # few lines of code
    if [ "check that code did everything it was supposed to do" ]
        then
        echo "Completed"
        else
        echo "Something went wrong"
    fi
    ;;

    "Option two")
    # more code
    ;;
    esac
done

現在是否可以將行更改echo "Something went wrong"為立即運行的命令，Option two而無需再次顯示 PS3 選單？

Answer 1

您正在尋找的稱為“fall-through”，在 bash 的case語句中，fall-through 是使用;&而不是 來完成的;;。但是，您不能有條件地失敗（即，您不能在區塊;&的中間插入 a if）。我建議你總是失敗，continue如果程式碼執行成功：

case $opt in
"Option one")
# few lines of code
if [ "check that code did everything it was supposed to do" ]
then
    echo "Completed"
    continue
else
    echo "Something went wrong"
fi
;&

"Option two")
# more code
;;
esac