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Bash菜單腳本-無法執行命令

[英]Bash menu script - Cannot execute commands

我正在建立一個最小的標准bash菜單。 選擇工作正常,但命令未執行。 我懷疑我可能會包裝命令,但是不確定如何完成。 我經常會收到2條命令,因此需要以bash將其理解為命令行的方式來分隔命令。

我發現了這樣的標題類似的問題,但沒有回答為什么未執行bash腳本中的命令:

無法在bash腳本中執行shell命令

什么有效,什么無效?

按1:不更改以更正cd。

按2:在正確的文件夾中創建文件。

按3:工作。

按4:Works(R文件准備為:a <-1)。

想要的行為:

我需要執行bash菜單腳本中的命令。

    #!/bin/bash


# -----
# Menu:
# -----

while :
do
echo "Menu"

echo "1 - Change directory to /tmp"
echo "2 - Create file test1.sh with hello message, in /tmp"
echo "3 - Execute test1.sh"
echo "4 - Execute R-script [/tmp/test2.R]"
echo "Exit - any kind but not [1-4]"

read answer;

case $answer in
    1)
    echo "Change directory to [\tmp]"
    cd /tmp # Command to be executed.
    break
    ;;

    2)
    echo "Create file [test1.sh] in [\tmp]"
    # Commands to be executed.
    cd /tmp
    touch test1.sh
    chmod +x test1.sh
    echo echo "hello" > test1.sh
    break
    ;;
    3)
    echo "Execute file [test1.sh]"
    /tmp/./test1.sh # Command to be executed.
    break
    ;;
    4)
    echo "Execute R-script [/tmp/test2.R]"
     cd /tmp && /usr/bin/Rscript test2.R # Command to be executed.
    break
    ;;

    *)
    # Command goes here
    echo "Exit"
    break
    ;;
esac
done

要執行所有情況時,請勿使用break。
並且在情況3中,您使用的是/tmp/./test1.sh它應該是./tmp/test1.shsh /tmp/test1.sh
您的代碼應為:

#!/bin/bash

# -----
# Menu:
# -----

while :
do
    echo "Menu"

    echo "1 - Change directory to /tmp"
    echo "2 - Create file test1.sh in /tmp"
    echo "3 - Execute test1.sh"
    echo "4 - Execute R-script [/tmp/test2.R]"
    echo "Exit - any kind but not [1-4]"

    read answer;

    case $answer in
        1)
            echo "Change directory to [\tmp]"
            cd /tmp # Command to be executed.
            pwd

        ;;

        2)
            echo "Create file [test1.sh] in [\tmp]"
            touch /tmp/test1.sh # Command to be executed.

        ;;
        3)
            echo "Execute file [test1.sh]"
            ./tmp/test1.sh # Command to be executed.

        ;;
        4)
            echo "Execute R-script [/tmp/test2.R]"
            /usr/bin/Rscript /production/20_front_trader/build/x_run_front_trader.R # Command to be executed.

        ;;

        *)
            # Command goes here
            echo "Exit"

        ;;
    esac
done

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