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Bash菜单脚本-无法执行命令

menu shell bash r

Toolbox · 技术社区 · 6 年前

我发现这个问题的标题类似,但没有回答为什么bash脚本中的命令没有被执行:

Cannot execute shell commands in bash script

什么管用?

按1:不更改为正确的cd。

按3:工作。

按4:Works(R文件的准备文件为:a<-1)。

通缉行为:

我需要bash菜单脚本中的命令来执行。

    #!/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

1 回复 | 直到 6 年前

Akhil 6 年前

如果要执行所有案例,不应使用break。
还有在第三种情况下 /tmp/./test1.sh ./tmp/test1.sh 或 sh /tmp/test1.sh
你的代码应该是:

#!/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