Su and sudo commands

Su-user name does not add minus sign environment variable does not switch
WHOAMI View Current User

 
   
  

  
    
   
su - -c “mkdir /tmp/file” 用户名
 
   
  

With the-C option, you can execute commands without switching users sudo temporarily has some permissions to use sudo to temporarily have root privileges without knowing the root password for the normal account, which is for security purposes and cannot be logged on.
Visudosudo-l See what permissions a normal user has under sudo visudo command to edit the relevant configuration file /etc/sudoers. If you do not have visudo this command, please use

 
   
  

  
    
   
yum install -y sudo 安装
 
   
  

  
 

   
  

  
## Allow root to run any commands anywhere
   
  

  
root    ALL=(ALL)   ALL
   
  

  
test      192.168   8.1  / 24  = ( root     NOPASSWD    : / bin  / ls   , / usr  / bin  / passwd   
   
  

  
test1   ALL=(root) /bin/ls,/usr/bin/passwd
  
 

Can restrict IP and commands

From for notes (Wiz)

Su and sudo commands