我发现了一种方法来修改给定文件中特定键值的格式-

key1=value1
key2=value2

sed -i "s/key1.*/key1=$newvalue/" "$CONFIG_FILE"

这里我逐行读取a.conf，并将key和瓦尔定义为变量，要求用户输入值，这些值在a.conf中用sed替换。

#!/bin/bash

CONFIG_FILE=a.conf
cat $CONFIG_FILE | while read line; do
   echo "Processing line: $line"
   key=$(echo $line | awk -F= '{print $1}');
   read  -p "Enter value for $key " val < /dev/tty
   sed -ie "s/^$key=.*/$key=$val/" "$CONFIG_FILE"
done

试运行：

$ cat a.conf
key1=value1
key2=value2

$ ./script.sh
Processing line: key1=value1
Enter value for key1 test1
Processing line: key2=value2
Enter value for key2 test2

$ cat a.conf
key1=test1
key2=test2

使用Bash脚本通过sed更新文本此脚本首先运行cd到文件的位置，然后运行sed命令，并在文件名target.config中将旧值**#CONFIG_PACKAGE_oui-httpd = y替换为CONFIG_PACKAGE_oui-httpd=y**逻辑sed -i 's/old_text/New_Text/' filename.sh

#! /bin/bash
    cd /target/linux/gem6xxx/xs5g01_cpe/ 
    sed -i 's/#CONFIG_PACKAGE_oui-httpd=y/CONFIG_PACKAGE_oui-httpd=y/' target.config