Question

我想从键盘格式中插入多个名称：

A
B
C

我尝试使用while这样的循环：

name=$*
while [ "$name" != "done" ]
do
echo "name:"
read $name
echo "$name"
done

当我插入"done"时，它将完成循环并将所有名称写入文本文件

Answer 1

使用SELECT `rt`.`name`, AVG(`rg`.`rating`) AS `rating` FROM `restaurant` `rt`, `rating` `rg` LEFT JOIN `rg`.`restaurant` = `rt`.`id` GROUP BY `rg`.`restaurant`并从stdin读取有什么问题？

cat

您可以将输出重定向到文件并使用cat -

关闭输入文件

<Ctrl-D>

Answer 2

这是你要找的吗？

#!/bin/bash
while true
do
read -p "Enter line : " line
if [[ $line = "done" ]]
then
  exit -1
  #-1 to show abnormal input ie "done"
else
  echo "$line" >> file #appending what you entered using >>
fi
done

或者惯用：

#!/bin/bash
cat /dev/null > file #Emptying file if already exist
while read -p "Enter line : " line && [[ $line != "done" ]]
do
  echo "$line" >> file
done

如何从键盘插入多个变量

2 个答案: