Since the local vmware has not been used for a long time, the password of the local virtual machine has been forgotten. This rare problem encountered, Baidu solved it.
Learning source: https://www.cnblogs.com/lippor/p/5537931.html
Just go to the boot interface e and then e select 2 and then b enter the new password; init 6 restart
Note that the password for the root user is modified
id: View the information of the currently logged in user
To modify the passwords of other users, you can view the current user list: cat /etc/passwd 500 (third parameter) accounts above are created by later users;
Then change the password: passwd admin (user name) Enter the new password twice to change the password of the root user whose password will not be displayed, just passwd
The etc directory is generally used to store configuration files
The current login is the root user to switch to other users: su admin $ ordinary user
Switch back to root su root # root user
cat /etc/group View group information
su switch user
sudo can execute commands with the same permissions as the root user without switching users
grep is a powerful text search tool