Questions regarding passwords and the use of them. Where and when it is needed for system security.

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Trying to install Ubuntu to dual boot Windows 7

I am a newbie to Ubuntu. I have done 2 full installations of Ubuntu 15.04 on 2 PC's 100% ok and everything works. I have a Windows 7 Laptop and tried to install Ubuntu from a CD and could not find a ...
0
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0answers
13 views

Password protection for software like Slidenote

I am using Ubuntu 14.04 for the very first time. i want to password protect my note taking software Slide note.
1
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1answer
13 views

Switched to GNOME, no password prompt on wakeup

After months of using Ubuntu I decided to switch from Unity to GNOME. Everything is working fine except it seems like some settings haven't carried over. When I close my laptop and reopen it, it doesn'...
1
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1answer
28 views

Enable password on lock screen exit

I have a problem of restoring the password request on lock screen. During the installation of Ubuntu I specified automatically login option, but now I want to re-enable the password protection. ...
23
votes
3answers
21k views

How do I install MySQL without a password prompt?

I'm trying to install MySQL on Ubuntu Natty without the password prompt. However, I keep getting prompted for a password at some stage after the main installation. Also, when I do enter what I ...
0
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2answers
30 views

How to find my wi-fi password in ubuntu 16.04 LTS

Well, yesterday i wanted to connect in my wireless network in ubuntu 16.04 LTS , but figured out that i couldn't remember the router's password. First i check the router for the code in the down side ...
106
votes
5answers
191k views

Execute sudo without Password?

Inspired by this question.... I am the sole person using my system with 12.04. Every time I issue a sudo command; the system asks for the user password (which is good in its own way). However I was ...
1
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0answers
47 views

Login screen asks for username after removing and reinstalling lightdm

I have uninstalled lightdm by sudo apt-get remove lightdm by mistake but I installed it again by going to virtual console and using sudo apt-get install lightdm but the problem now I am encountering ...
2
votes
1answer
376 views

How to make nautilus forget SMB session passwords without logging out

I'm testing the accessibility of a couple of samba shares through nautilus. When inserting the password for the first time, I've chosen "remember password until you logout" but now I'd like to make ...
0
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3answers
62 views

Unable to find password on sudo apt-get

I want to install some apps. I did: $ sudo apt-get [sudo] password for .....: But I cannot install my apps!
3
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0answers
28 views

Unlocking at the lock screen fails

I have encountered a strange issue with my Ubuntu 15.10 install: Usually, I lock my desktop with Ctrl+Alt+L when I leave my computer, and when I come back, I enter my password and can continue working....
0
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1answer
34 views

Upgraded Ubuntu to 14.04, can't login to my account & don't know the password of root

I upgraded my ubuntu from 12.04 LTS to 14.04 LTS recently. While installing the downloaded packages, my system hung up and restarted. That is how the problem started. It's not taking my old password. ...
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3answers
53 views

How to set up passwordless ssh for root account?

i am trying to follow the instructions here to set up passwordless ssh between root accounts (needed to use Ambari). However this involves ssh-copy-id user@machine and since user is root, when I try ...
48
votes
1answer
1k views

How do I stop the constant requests for a password?

I am 70 years old and losing my memory. The only other person here is my wife, who I trust with everything. I have Ubuntu set to automatically log me in when I boot the system. I need to stop the ...
6
votes
2answers
3k views

How to get GUI sudo password prompt without command line?

Currently, for all my commands that require root access, I have to type them out on a command line. I would like for the GUI to prompt me to key in my password, when sudo is required, instead of ...
0
votes
1answer
41 views

Prevent root from resetting a specific user password

Is there any way to prevent others including root account from resetting a user password? I'd like to protect my user account not to be logged in by others so that others can't see the mounted ...
1
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2answers
108 views

Sudo is not asking for password on Ubuntu 16.04

Ever since I update to 16.04 I notice whenever I use any sudo command the terminal does not ask me the password before executing the command,The command is directly executed.I am the admin and I have ...
0
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0answers
33 views

Ubuntu 16.04 - Trying to disable home folder encryption

I am trying to disable the home folder encryption on my Ubuntu 16.04. I followed this tutorial, but unfortunately something went wrong: http://www.howtogeek.com/116179/how-to-disable-home-folder-...
1
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1answer
499 views

What is the default password in BTsync?

I set up the BTsync by downloading the package from their homepage and running $HOME/.bsync from the extracted package. Then, it says go to http://localhost:8888 where I get: Ubuntu 14.04 LTS ...
16
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5answers
40k views

Find the password for the currently connected wireless network

I want to find the password for the wireless network that I am currently connected to (and I entered the password when connecting to the network). How can I do this in Ubuntu?
2
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2answers
112 views

Can't log in: Upgraded to Ubuntu 16.04 invalidated my public ssh-keys, changed to PasswordAuthentication no and now I can't get back in

I upgraded my remote server to Ubuntu 16.04 (from 14.10). Then I reconfigured it to only use keys and not passwords. Did that by editing the /etc/ssh/sshd_config file where I changed to the following:...
0
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0answers
22 views

Repeated prompt for wifi password without connection

My (old) laptop keeps prompting me for a password to my wifi. It does this repeatedly and does not connect even if I am sure the password is correct. I would like to state that I have no idea what I ...
0
votes
0answers
43 views

Ubuntu 16.04 login problem [duplicate]

I have problems with the startup from a USB flash. It asks for a login and a password and I don't know the login or password can anyone help? It writes ubuntu 16.04 LTS ubuntu tty1 in a prompt.
1
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0answers
30 views

Programs that require su permission dont work unless ran as sudo

I'm running Ubuntu MATE 16.04 with openbox as my DE. The programs that require the sudo password get weird errors when i try to run the action that needs it. For instance if i try to install a program ...
1
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4answers
28k views

How to decode the hash password in ./etc/shadow

I don't know much of Ubuntu, but is ubuntu able to decode these sort of things? Or do I need to install some program? If I don't, how do I use Ubuntu to read the file? Thanks in advance!
1
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0answers
24 views

What is the preferred way to store secret data on Ubuntu touch?

I am developing an Ubuntu Touch app which shall connect with an e-mail server. However, I do not know how to store the password so that it is safe, for example from abuse by people buying used phones ...
0
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0answers
22 views

Password Changes with Ansible (User Accounts)

I am having trouble changing passwords with Ansible. It might be my playbook. I need to change this password for specific users. The ssh-keys are the same in the authorized keys section. Not sure ...
0
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0answers
33 views

Reason why I am unable to login to ubuntu every time I upgrade the kernel

I am using xubuntu 16.04. Whenever any new kernel is available I upgrade my system using the command: apt upgrade But then when I reboot the system always shows authentication error after I type ...
0
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1answer
29 views

Why doesn't Ubuntu/Thunderbird save my PGP key?

I installed Thunderbird and followed the instructions from: https://help.ubuntu.com/community/GnuPrivacyGuardHowto to set up PGP. First it worked, but after restarting my system the next day, I wasn'...
0
votes
1answer
38 views

Forgotten password on compressed file

Two years ago, I did some data recovery for a client, and created a 7z compressed file with a password on the file. I have since forgotten the password i put on the file, the original hard drives are ...
0
votes
2answers
95 views

secure erase returns input/output error

I've already given a detailed description of my predicament in my previous question. Now I've got this: sudo hdparm --user-master u --security-erase my_password /dev/sda returns: ...
1
vote
1answer
30 views

16.04: editing /etc/sudoers to allow NetMan restart w/o password

I want to be able to restart Network Manager without having to enter my password every time. I did sudo visudo and added this line: %sudo ALL=(ALL) NOPASSWD: /bin/systemctl restart network-manager....
0
votes
0answers
16 views

Disable numlock warning on lock screen for notebook

I own a notebook with separate number pad on the keyboard and running 16.04. On the login screen/lock screen, I see a grey warning triangle in the password input field telling me that NUM-Lock is on. ...
1
vote
1answer
33 views

MySQL does not accept password not lets me reset password by skip-grants-table, unable to login

I terminal I have typed: apt install mysql-server mysql-client It asked me for password and I gave it. Next I typed: mysql_secure_installation It prompted me for password. I am cent percent ...
0
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1answer
49 views

sudo problem. I can't write my password to terminal

so I was installing python on my laptop :~/Desktop/Python-3.5.1$ su root Password: ssu: Authentication failure` It didn't let me wrote my password. so I looked help and found that: gksu ...
0
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0answers
17 views

Unable to login using password on Ubuntu 16.04 [duplicate]

I selected the option of logging in to my user account (with administrator privileges) without a password. Now that I want to revert to logging in using a password, I am unable to do so. I have set a ...
0
votes
0answers
39 views

Recovery password does work

Previous version of Ubuntu was using a 6 letter password. When I downloaded 14.04, the original password says "failed to start session." When I go through reset process and use at least 8 characters ...
0
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0answers
76 views

Ubuntu changed my passwords (login & KWallet) itself

Today I was unable to log in to my Ubuntu: password was changed itself (!). Yesterday (7 Feb 16) all worked OK, last password change was 20 Feb 15. I am the only user of PC and reseted the password ...
0
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2answers
38 views

over-coming interactive command in a script [closed]

I'm trying to have a script to create containers on proxmox, & I want user to enter his password before proceeding to the creation of container, so I can push it to the main command. the command ...
0
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0answers
12 views

Ubuntu 3.5.0-45-generic Password forgotten on during bootup how to reset at GUI or Recovery [duplicate]

My laptop x86 ASUS K60I has Ubuntu with kernel 3.5.0-45-generic (I forgot the version) showing up on the screen. GRUB shows these entries: Ubuntu, with Linux 3.5.0-45-generic Ubuntu, with Linux 3.50-...
3
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0answers
27 views

frequent rejection of password Ubuntu 16.04 --no pattern

Several days ago my password started to be rejected frequently. I had to type my password 2 or 3 times for sudo commands and sometimes open a new terminal before the password was accepted. ...
1
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0answers
44 views

chrome shows passwords regardless of keyring locked or unlocked

My concern is that chrome shows the saved passwords in chrome://settings/passwords regardless whether i have locked or unlocked the login keyring. i also tried to change my login keyring to something ...
5
votes
1answer
2k views

Broken gnome-keyring file and google-chrome hangs

After few weeks of uptime yesterday I rebooted my laptop. After that, I discovered that there is no password in gnome-keyring. gnome-keyring segfault and didn't work. I restored ~/.gnome2/keyrings/...
32
votes
3answers
40k views

Disable root account in Ubuntu?

I was asked for root credentials to setup my printer in Ubuntu. This seemed to be caused by a bug. And the suggested workaround is to create a root password. Since it is default that no root password ...
0
votes
2answers
2k views

Ubuntu won't accept password

I have a notebook with Ubuntu 14.04 installed... My user is set to auto login, but everytime I need to input the password (for installing applications for example), it won't accept the actual password....
2
votes
0answers
35 views

Lost Password in Ubuntu 16.04 [duplicate]

I installed Ubuntu 16.04, encrypted home directory. Jotted down system info including password, etc., in a document which will presumably be in /home/mike/somewhere. Hadn't printed the file to ...
5
votes
4answers
13k views

Installed perfectly but password not working for login or authentication

I installed Ubuntu on an old XP machine (replaced XP with Ubuntu) and it seemed like it went well... Until I tried to download and install the suggested updates! The password I set during ...
0
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0answers
36 views

NetworkManager, unknown authentication passwords, and XScreenSaver 5.15

I used to use a laptop running Xubuntu, but then got a new one. It's been a year or so since I booted it back up and this is what I noticed. It's been so long I cant remember what it is so I tried ...
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votes
0answers
20 views

password error - not solved when reseting pw

I have a password error when login in to my ubuntu session. Here is the whole story: In order to be allowed a shorter password, I modified the file /etc/pam.d/common-password, then changed my ...
2
votes
2answers
129 views

How to use ubuntu live disk to reset windows 10 password?

I need to reset the password of windows 10 for my little brother. There is a similar post on here on resetting vista password with chntpw. I followed the steps but it doesn't help. Anyone know how to ...