循环时以字符串连接输入 [英] Concatenate inputs in string while in loop

问题描述

我有一个source变量，基本上是一串用逗号分隔的元素:

I have a variable of sources that is basically a string of comma-separated elements:

SOURCES="a b c d e"

我希望用户为每个源输入一个目标，因此我希望将此输入存储到类似于上面的字符串中，但包含目标.如果我要分配a = 1，b = 2 ...等，我将得到以下内容:

I want the user to input one destination for each of this source, and I want hence to store this input into a string looking like the above but containing the destinations. If I want to assign a=1, b=2... etc, I would have something like this:

echo $DESTINATIONS >>> "1 2 3 4 5"

为了执行上述操作，我这样做:

In order to do the above, I do this:

SOURCES="a b c d e"
DESTINATIONS=""

for src in $SOURCES
do
    echo Input destination to associate to the source $src:
    read dest
    DESTINATIONS=$DESTINATIONS $dest
done

但是，如果我在 $ DESTINATIONS 上执行了 echo ，我发现它为空.而且，在每个循环中，我的shell都会告诉我:

However, if I do an echo on $DESTINATIONS, I find it empty. Moreover, at each loop, my shell tells me:

-bash: = **myInput**: command not found

知道我在哪里做错了吗?

Any idea where I'm doing wrong?

推荐答案

SOURCES="a b c d e"
DESTINATIONS=""

for src in $SOURCES
do
    echo Input destination to associate to the source $src:
    read dest
    DESTINATIONS+=" ${dest}"
done
echo $DESTINATIONS

为我工作.

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