本文介绍了循环时以字符串连接输入的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
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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