逐行读取文件并将值分配给以逗号分隔的变量

Question

I have the following a.txt file:我有以下 a.txt 文件：

abc,
def,
ghi

I want to read it line-by-line, and store in a varibale as comma seperated values我想逐行阅读它，并将其作为逗号分隔值存储在变量中

var1=abc,def,ghi

i am new to shell script pls help我是 shell 脚本的新手请帮忙

My try:我的尝试：

name="file.txt"
while IFS=read -r line
do
    names=`echo $line`
done < "name"

it is displaying only value ghi to varibale它只显示 varibale 的值 ghi

Answer 1

You're not concatenating, you're replacing the names variable each time through the loop.您不是在串联，而是在每次循环中都替换names变量。

There's no need to use echo when assigning the variable.分配变量时无需使用echo 。

name="file.txt"
names=
while IFS=read -r line
do
    names="$names$line"
done < "name"