Question

我正在使用bash脚本但是我需要脚本来询问值，直到该值变为空并将值放入变量中。让我们举一个例子：

Please enter value: value1
VAR="value1"

Please enter value: value2
VAR="value1 value2"

Please enter value: value3
VAR="value1 value2 value3"

Please enter value: // script should stop asking for the same value 
                    // and continue the execution of code below this part
VAR="value1 value2 value3"

我怎么能在Bash中做到这一点？

Answer 1

您可以使用数组：

var=()
while true; do 
  read -p "Please enter value: " val
  [[ -z $val ]] && break
  var+=("$val")
done

for elem in "${var[@]}"; do
  do_something_with "$elem"
done

Answer 2

while read -p "Please enter value: " value
do
    [ -z "$value" ] && break
    VAR="$VAR $value"
done

我如何多次询问价值？

2 个答案: