What is default linux root password

What is the default root password?

I installed Ubuntu 12.04 LTS (Precise Pangolin), 64 bit. Nowhere was I asked to set password for root. I just installed AccuRev SCM software. It was installed under the /root folder by default. Now I try do something on that folder. I tried with su to switch to root, but I don’t know its password. Should I always use sudo or get the default root password, if any? How do I create a launcher for software installed inside the /root directory?

this lameass website won’t let me answer, but the correct answer is: sudo usermod root -p password; sudo passwd root; then enter the new password. presto, root is unlocked and you can now su/login with root

How idiotic things can get — su is disabled, sudo is not installed, this distribution is used as a base for mssql server, the instructions say you need to sudo open some network ports to enable MSDTC. Back to square 1.

4 Answers 4

By default, the root account is accessed by sudo.

For a complete discussion in the topic, and information for how to set a root password, see: RootSudo — Community Ubuntu Documentation

With that said, it is extremely unlikely you need to set a root password, I advise you use

Or for graphical applications, use gksu

«extremely unlikely you need to set a root password»: I do not agree. If one is logged in as «joeblo», and then needs to move their /home/joeblo directory aside to move in a new one from a previous installation. They cannot do that safely from their own user account. They must do that from some other user account. Yes, they could sudo and then create a second user account, and then sudo and do the move, but that is a waste of effort. This happens to me every time I load a new version of Linux since I want to replace the installer-generated /home/joeblo directory with my previous one.

Bodhi.zazen has by far the best answer; boot to recovery mode (wiki.ubuntu.com/RecoveryMode). If you have a corrupted groups file and can’t sudo (sometimes there is no substitute for being root).

at lindhe — askubuntu.com/questions/11825/… . In addition gksu is in theory better for integrating and security with graphical applications and sudo / su are intended for command line interface (IMHO).

Password for root is not set in Ubuntu which means the root login is disabled by default.

The user account created during Ubuntu installation is associated with all sudo capabilities. You could use sudo for commands that require root privileges in Ubuntu terminal.

However you can enable the root account and set a password for it. To do so use:

Firstly you will be asked for your current user password and after this you will be asked for the new password twice (new and retype password) as your new root password.

I couldn’t remember ever setting up my root password so I couldn’t remember it and $ su root was failing with every password I tried. I ran your command $ sudo passwd root and it worked perfectly. Thanks for a great answer.

You should still configure the root password for Ubuntu. Since it’s disabled by default and you create a user password for all admin tasks on installation, booting into single user mode will give access to a root shell — even if your boot options have been set to prompt for one. It doesn’t have one to ask for unless you set it

sudo has benefits, but not having a root password set can also be troublesome. I had a machine last week that failed to boot up, showing the message «Give root password for maintenance (or press Control-D to continue):» The problem is that the machine did not have a root password set, and just pressing enter would only display the message again, as would control-D, so I had to take the hard drive out and access it from another machine to fix it.

By default the Ubuntu installer does not set up a root password and therefore you don’t get the ability to log in as root. Instead you are given the ability to perform tasks with superuser privileges using sudo.

While you can create a password for the root account allowing you to log in as root with su , there are some distinct benefits to using sudo.

Sudo is an alternative to giving people a root password in order to perform superuser duties. In a default Ubuntu install the person who installed the OS is given «sudo» permission by default.

Anybody with «sudo» permission may perform something «as a superuser» by pre-pending sudo to their command. For instance, to run apt-get dist-upgrade as a superuser, you could use:

By default, sudo will ask you for your own account password when performing this. This helps security. This is remembered for a few minutes so if you have a few tasks to do with sudo it will only ask you for your password on the first.

You will see the above usage of sudo pretty much anywhere you read a tutorial about Ubuntu on the web. It’s an alternative to doing this.

su apt-get dist-upgrade exit 

With sudo, you choose in advance which users have sudo access. There is no need for them to remember a root password, as they use their own password. If you have multiple users, you can revoke one’s superuser access just by removing their sudo permission, without needing to change the root password and notify everyone of a new password. You can even choose which commands a user is allowed to perform using sudo and which commands are forbidden for that user. And lastly, if there is a security breach it can in some cases leave a better audit trail showing which user account was compromised.

Not having a root password makes brute force attacks on the root account impossible: this is relevant if you allow login over SSH. Instead, an attacker would need to know a local account name.

Sudo makes it easier to perform a single command with superuser privileges. With su , you permanently drop to a superuser shell which must be exited using exit or logout . This can lead to people staying in the superuser shell for longer than necessary just because it’s more convenient than logging out and in again later.

Getting a root shell

With sudo, you still have the option of opening a permanent (interactive) superuser shell with the command:

. and this can still be done without any root password, because sudo gives superuser privileges to the su command.

And similarly, instead of su — for a login shell you can use sudo su — or even sudo -i .

However when doing so you just need to be aware that you are acting as a superuser for every command. It’s a good security principle not to stay as a superuser for longer than necessary, just to lessen the possibility of accidentally causing some damage to the system (without it, you can only damage files your user owns).

Just to clarify, you can, if you choose, give the root user a password allowing logins as root, if you specifically want to do things this way instead. I just wanted to let you know about the Ubuntu convention of preferring sudo instead and let you know that there is an alternative.

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centos default root password

The default root password is meant to be «centos» but it is not.

How do I find the root password in CentOS?

1. /sysroot/bin/ = OS system shell.
2. Default file look:
3. Edited file look:
4. chroot /sysroot =access the OS.
5. passwd root = reset root password.
6. touch /.autorelabel = update selinux.
7. exit = exit the OS. reboot.

What is the default password for CentOS 7?

For Linux / Cloud-Init Based Virtual Machines

Here are the usernames for our official images: Ubuntu Trusty 14.04 (SWITCHengines) user: ubuntu. Centos 7 (SWITCHengines) user: centos.

How do I find my root password in CentOS 7?

1. 1 – In the boot grub menu select option to edit.
2. 2 – Select Option to edit (e).
3. 3 – Go to the line of Linux 16 and change ro with rw init=/sysroot/bin/sh.
4. 4 – Now press Control+x to start on single user mode.
5. 5 – Now access the system with this command. .
6. 6 – Reset the password.

What is default root password for Ubuntu?

By default, in Ubuntu, the root account has no password set. The recommended approach is to use the sudo command to run commands with root-level privileges.

How do I reset root password in CentOS?

1. Step 1: Access the Command Line (Terminal) Right-click the desktop, then left-click Open in Terminal. Or, click Menu > Applications > Utilities > Terminal.
2. Step 2: Change the Password. At the prompt, type the following, then press Enter: sudo passwd root.

What is the default username and password for CentOS?

The credentials listed here will give root or super user access to the system. For distributions that allow root login by default, such as RHEL, CentOS, or Scientific Linux: username: root. password: fln75g.

How do I login to CentOS?

To log in as a normal user, type your username at the login prompt, press [Enter] , type your password that you selected when creating the user at the password prompt, and press [Enter] . After logging in, you can type the command startx to start the graphical desktop.

How do I recover my root password?

To reset the forgotten root password in Linux Mint, simply run the passwd root command as shown. Specify the new root password and confirm it. If the password matches, you should get a ‘password updated successfully’ notification.

How do I login as root in CentOS terminal?

1. Run sudo and type in your login password, if prompted, to run only that instance of the command as root. .
2. Run sudo -i . .
3. Use the su (substitute user) command to get a root shell. .
4. Run sudo -s .

What is sudo password in CentOS?

By default, sudo needs that a user authenticates using a password before running a command on CentOS 7. Some times you may need to run a command with root privileges, but you do not want to type a password using sudo command. This is useful for scripting or any other purpose.

What is CentOS default user?

by Eric Hammond

OS/Distro	Official AMI ssh Username	Legacy / Community / Other AMI ssh Usernames
Centos	centos	root
SUSE	ec2-user	root
BitNami	bitnami
TurnKey	root

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How To Install Elasticsearch 7 on Debian 10/9Step 1: Update your system. Let’s update our packages index: sudo apt update.Step 2: Import the Elasticse.

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How to Debug a Bash Script like a BossUse options (bash specific)Use breakpoints.Use debug output.Use shopts (bash specific)How do you debug a bash sc.

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The following commands will get you the private IP address of your interfaces:ifconfig -a.ip addr (ip a)hostname -I | awk ‘print $1’ip route get 1.2. .

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