Linux default user password

What are the default passwords of these users: nobody, daemon, uucp, etc.?

what are default password of these users : root, daemon, bin, sys, sync, games, man, lp, mail, news, uucp, nobody.

You can check the status by looking in the shadow password file ( /etc/shadow ) at the second field. By default these accounts are locked (the password is set to * ), which disables logins.

Can anyone login through ssh or ftp by these users ??

Not unless you have set a password for them.

No, the value of the hashed password field is the character «*», which no password hashing algorithm will produce. Additional ways to prevent logins is by having invalid home directories and special shells in /etc/passwd (see man 5 passwd ;man login;man 3 crypt` )

If you would look at the password file you would see that these have a specific setting (games used as an example):

$ more /etc/passwd|grep games games:x:5:60:games:/usr/games:/bin/sh 

The 1st three (: is the separator):

• name
• password. An x character indicates that encrypted password is stored in /etc/shadow file.
• user ID (UID): 1-99 are reserved for other predefined accounts.

The password is hashed (if it starts with a $ it is encrypted).

If the password field contains some string that is not a valid result of crypt(3), for instance ! or *, the user will not be able to use a unix password to log in (but the user may log in the system by other means).

Can anyone login through ssh or ftp by these users ??

Not by default. In theory you can create a user named games as an actual user or change the pwd of the user games.

How does the user ID lock it out of the system? If I set a password for the games account I have no problem logging in as games .

This answer implies that these accounts have an «encrypted and unknown» password. But if you look in /etc/shadow , you’ll see that these accounts do not have a password assigned at all, and are marked as locked from login. I think the wording of this answer could be improved.

Logins like nobody will typically be «locked», so it is not possible to log in as them using a password (in any way, not SSH, not FTP, not the su command etc)

-l, --lock Lock the named account. This option disables an account by changing the password to a value which matches no possible encrypted value, and by setting the account expiry field to 1. 

However, if you have sudo access you can switch to these accounts with a command like this:

This is because the super-user can change to any account without entering a password

Most of this users are reserved for some service , you cannot log in with , the aim of this users is when its hacked it has minimal affect on your system like nobody user which has no password making it possible for attacker to know.

Ubuntu by default root account is locked for security issues , you can use sudo to have admin privileges and the password is unknown and encrypted .

Some of these users are users having a valid shell with no password ( like bin )

It cannot connect by ssh because it needs /bin/.ssh/authorized_keys to connect .

By other words these users are security users other than login based users .

Note its not recommended to change the state of these users ( change passwords or lock or unlock)

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What is the default password of user and guest in Ubuntu 12.04

I am working on Ubuntu 12.04 using VMware. While working in that, VMware suddenly hung and Ubuntu restarted. It’s asking me to log in as user and guest session. I have tried using password as the password for user, but it didn’t work. I can’t enter without password. Can anyone help me out?

Have you installed from scratch or are you using some of the Vmware images you can find around? In the first case you have plenty of answers here, in the second one you should see what the default user/password is for the preinstalled image.

7 Answers 7

By default the password for any guest user is disabled. So you don’t have to enter any password for guest.

Also, by default, Ubuntu doesn’t have any user named «user», only if you created one with this name and only you should know the password for this account in this case. If you don’t remember it, see: How do I reset a lost password (using recovery mode requires me to type the password)?

Reboot your system and select Advanced options from grub. Then select Ubuntu (recovery mode) and create new user or change password for existing:

(replace with the accountname you want to use)

Now just follow the steps and fill the information:

Adding user "new_user" Adding new group "new_user" (1004). Adding new user "new_user" (1004) with group "new_user. Creating home directory "/home/new_user". Enter new UNIX password: Retype new UNIX password: passwd: password updated successfully Changing the user information for new_user Enter the new value, or press ENTER for the default Full Name []: Room Number []: Work Phone []: Home Phone []: Other []: Is this information correct? [y/N] y 

There is no default user (and therefore no default password) on Ubuntu. The guest user cannot perform any administration tasks at all.

As you completed the installation you must have chosen a username (and a password) during that process. Use that username and password to access your machine.

If you cannot remember the password see this answer to How do I reset a lost password

If the VM is brand new (and if the above process gives you troubles) it might be easier just to reinstall (and take note of some crucial settings).

Pw for Vbox is going to be

for the guest by default no spaces if lowercase dosent work try uppercase as shown below

The Ubuntu 14 image I have for VMware has passwords defaulted to «password». I attempted to use sudo. It asked for «password for user». I typed «password» (without the quotes) and sudo completed the operation.

Greetings from the Dakota’s! I came looking after an apt-get update messed up my new (very old stock!) PCduino. She worked great with the original Lubuntu on it, I was doing all my old favorite Linux functions and having a ball. Then I rebooted, and BANG! I couldn’t do squat. I could not log in as ubuntu as it wanted me to, it would not take the ubuntu password, so I logged in as guest and it wouldn’t let me sudo or su. So I began messing around and looking all over the web for a good answer, never really found one, but then it came to me, try ubuntu password for sudo on the guest account, didn’t work very well, so I tried su with that password and I was IN! I quickly made myself an account with my name, then added myself to the SUDO list and I am again off and running with my new little toy. Sure wish the EBAY seller would have told me he was selling me a gizmo that was 5 years out of date and 3 generations of processor behind the current type, but I guess for ten bucks you can’t expect the Cadillac, you need to be happy with the Chevy of the line,.

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Ubuntu Default Password: What You Need to Know

Ubuntu is one of the most popular and widely used Linux distributions in the world. It is known for its stability, security, and ease of use. If you are new to Ubuntu, you may be wondering what the default password is and how to use it. In this article, we will explain everything you need […]

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Ubuntu is one of the most popular and widely used Linux distributions in the world. It is known for its stability, security, and ease of use. If you are new to Ubuntu, you may be wondering what the default password is and how to use it. In this article, we will explain everything you need to know about the Ubuntu default password.

What is the Ubuntu Default Password?

The Ubuntu default password is the password that is set for the root account when you install Ubuntu. The root account is the administrator account that has full access to the system. By default, Ubuntu does not set a password for the root account. Instead, it uses a feature called sudo (short for «superuser do») to allow users to perform administrative tasks.

When you install Ubuntu, you are prompted to create a user account. This account is a regular user account with limited privileges. To perform administrative tasks, you need to use the sudo command. When you use the sudo command, you are prompted to enter your own user password, not the root password.

How to Use the Ubuntu Default Password

As mentioned earlier, Ubuntu does not set a password for the root account by default. Instead, it uses the sudo command to allow users to perform administrative tasks. To use the sudo command, follow these steps:

1. Open a terminal window by pressing Ctrl+Alt+T or by searching for «Terminal» in the applications menu.
2. Type the command you want to run with administrative privileges, preceded by the sudo command. For example, if you want to update your system, type sudo apt update .
3. Press Enter. You will be prompted to enter your own user password.
4. Type your password and press Enter. If your password is correct, the command will run with administrative privileges.

If you need to run multiple commands with administrative privileges, you can use the sudo su command to switch to the root account. This will give you a root shell, where you can run multiple commands without having to use the sudo command each time. To switch to the root account, follow these steps:

1. Open a terminal window.
2. Type sudo su and press Enter.
3. You will be prompted to enter your own user password.
4. Type your password and press Enter.
5. If your password is correct, you will have a root shell.

To exit the root shell and return to your own user account, type exit and press Enter.

Related Concepts and Methods

The Ubuntu default password is just one aspect of system administration in Ubuntu. There are many other concepts and methods that are related to system administration, such as:

• User accounts: Ubuntu allows you to create multiple user accounts with different levels of privileges. This can be useful for managing access to the system.
• Permissions: Ubuntu uses a permissions system to control access to files and directories. Understanding how permissions work is essential for managing the system.
• Services: Ubuntu runs many services in the background, such as networking, printing, and file sharing. Understanding how these services work is important for troubleshooting and managing the system.
• Package management: Ubuntu uses a package management system to install and update software. Understanding how this system works is important for keeping the system up-to-date and secure.

To learn more about these concepts and methods, you can consult the Ubuntu documentation or search for tutorials online.

Conclusion

The Ubuntu default password is an important concept to understand if you are new to Ubuntu or Linux in general. By default, Ubuntu does not set a password for the root account, but instead uses the sudo command to allow users to perform administrative tasks. Understanding how to use the sudo command is essential for managing the system. Additionally, there are many other concepts and methods related to system administration in Ubuntu that you should be familiar with. With this knowledge, you can confidently manage and troubleshoot your Ubuntu system.

Alex Ivanovs

Alex is a full-stack developer with more than 15 years of experience. After many years of threading the self-taught path, he discovered a natural passion for writing. His past work includes helping build the Huffington Post Code column and working with publishers such as Entrepreneur, TheNextWeb, and many prominent tech startups.

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