向变量中已有的字符串尾部添加文本(Bash)

向变量中已有的字符串尾部添加文本(Bash)

October 7, 2023

Content # 

$ cat test4
#!/bin/bash
# using a variable to hold the list

list="Alabama Alaska Arizona Arkansas Colorado"
list=$list" Connecticut"

for state in $list
do
   echo "Have you ever visited $state?"
done
$ ./test4
Have you ever visited Alabama?
Have you ever visited Alaska?
Have you ever visited Arizona?
Have you ever visited Arkansas?
Have you ever visited Colorado?
Have you ever visited Connecticut?
$

$list变量包含了用于迭代的值列表。

注意，脚本中还使用了另一个赋值语句向$list变量包含的值列表中追加（或者说是拼接）了一项。这是向变量中已有的字符串尾部添加文本的一种常用方法。

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