从用户输入到包含空格的路径（bash-script）[重复]

Question

我需要提示用户输入文件夹路径，以便将该文件夹从服务器SCP到我的计算机。

因为我知道文件夹名中有一个空格（不幸的是，不能省略），所以我试图让它发挥作用，但我做不到。

#copy.sh
read -r -p "Plot date: " plot_date
scp -r user@server:/home/user/Documents/projects/pages/$plot_date Plots/

./copy.sh
Plot date: 2021-09-06 10.51
user@server's password: *******
scp: /home/user/Documents/projects/pages/2021-09-06: No such file or directory
cp: cannot stat '17.10': No such file or directory

#copy.sh
read -r -p "Plot date: " plot_date
scp -r user@server:/home/user/Documents/projects/pages/"$plot_date" Plots/

它抛出了几乎相同的错误

scp: /home/user/Documents/projects/pages/2021-09-06: No such file or directory
scp: 17.10: No such file or directory

我尝试将输入保存到另一个变量中，并使用它（省略路径中的字符串）

read -r -p "Plot date: " plot_date
p_date="$plot_date"
scp -r user@server:/home/user/Documents/projects/pages/$p_date Plots/

它抛出与上面相同的错误。

read -r -p "Plot date: " plot_date
p_date="$plot_date"
scp -r "user@server:/home/user/Documents/projects/pages/$plot_date" Plots/

Answer 1

如果两端都使用bash，则可以使用@q参数展开：

read -r -p "Plot date: " plot_date
scp -r user@server:/home/user/Documents/projects/pages/"${plot_date@Q}" Plots/

${parameter@operator}
    Parameter transformation.  The expansion is either a transforma‐
    tion of the value of parameter or  information  about  parameter
    itself,  depending on the value of operator.  Each operator is a
    single letter:

    Q      The expansion is a string that is the value of  parameter
            quoted in a format that can be reused as input.