Linux 自启动.sh脚本使用sudo自动输入密码

1、root下，vi /etc/sudoers :

[root@guanz etc]# vi /etc/sudoers
[root@guanz etc]# 

# 添加如下内容:
guanz    ALL=(ALL)       ALL

示例:
##
## Allow root to run any commands anywhere
root    ALL=(ALL)       ALL
guanz    ALL=(ALL)       ALL
## Allows members of the 'sys' group to run networking, software,

2、切换至普通用户guanz,并测试命令:

2.1 方式一：【echo ‘passwd’ | sudo -S java -jar ****】

[root@guanz etc]# su guanz
[guanz@guanz etc]$ 

# 进入jar包所在目录下：
[guanz@guanz dell]$ cd app/
[guanz@guanz app]$ ll
total 599948
-rw-rw-r--. 1 guanz guanz     59162 Jul  1 11:09 log-210701-01.txt
-rwxrwxr-x. 1 guanz guanz 307142072 Jul  1 14:36 test-1.0.jar

# 查看当前在运行的窗口程序
[guanz@guanz app]$ screen -ls
No Sockets found in /var/run/screen/S-guanz.

# 创建窗口，并进入，直接执行java -jar启动，会提示你输入密码：
[guanz@guanz app]$ screen -S jar
[guanz@guanz app]$ sudo java -jar test-1.0.jar > log-01.txt
[sudo] password for guanz: 

# 通过【echo 'passwd' | sudo -S java -jar ****】再次执行，会直接启动，无需再输入密码。
[guanz@guanz app]$ echo '123456' | sudo -S java -jar test-1.0.jar > log-01.txt
[sudo] password for guanz: 


# 查看当前在运行的窗口
[guanz@guanz app]$ screen -ls
There is a screen on:
	17362.jar	(Detached)
1 Socket in /var/run/screen/S-guanz.
[guanz@guanz app]$ 


# 查看日志文件，发现文件已启动：
2021-07-01 15:01:02.531  INFO 17548 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8890 (http) with context path ''
2021-07-01 15:01:02.534  INFO 17548 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 29.065 seconds (JVM running for 30.46)

至此，此命令有效。

2.2 方式二：【EOF】文本块方式

sudo -S java -jar test-1.0.jar > log-01.txt << EOF 
> passwd
> EOF

# 通过【EOF】文本块的方式，再次执行，会直接启动，无需再输入密码。
[guanz@guanz app]$ sudo -S java -jar test-1.0.jar > log-01.txt << EOF
> 123456
> EOF



# 查看日志文件，发现文件已启动：
2021-07-01 15:04:39.160  INFO 17848 --- [           main] o.s.b.w.embedded.tomcat.TomcatWebServer  : Tomcat started on port(s): 8890 (http) with context path ''
2021-07-01 15:04:39.162  INFO 17848 --- [           main] com.example.demo.DemoApplication         : Started DemoApplication in 29.111 seconds (JVM running for 30.618)


至此，此命令有效。

3、自启动.sh脚本文件:

#!/bin/bash
#cd ~/app
#sudo java -jar test-1.0.jar > log.txt

screen_name=$"jar"
screen -dmS $screen_name
cmd1=$"cd /home/app";
screen -x -S $screen_name -p 0 -X stuff "$cmd1"
screen -x -S $screen_name -p 0 -X stuff $'\n'
cmd3=$"echo '123456' | sudo -S java -jar test-1.0.jar > log-01.txt";
screen -x -S $screen_name -p 0 -X stuff "$cmd3"
screen -x -S $screen_name -p 0 -X stuff $'\n'
cmd4=$"screen -d jar";
screen -x -S $screen_name -p 0 -X stuff "$cmd4"
screen -x -S $screen_name -p 0 -X stuff $'\n'

再见。