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

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0
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3answers
60 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
votes
0answers
27 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....
-2
votes
3answers
51 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 ...
0
votes
1answer
39 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
vote
0answers
44 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 ...
0
votes
0answers
30 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-...
0
votes
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

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
vote
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
vote
0answers
23 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
votes
0answers
21 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
votes
0answers
32 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
votes
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
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
32 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
votes
1answer
48 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
votes
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 ...
1
vote
2answers
102 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
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
votes
2answers
91 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: ...
3
votes
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
vote
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 ...
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
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
votes
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-...
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 ...
0
votes
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 ...
-1
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 ...
1
vote
2answers
33 views

Password sign-in blocked by installed software

Yesterday I installed Gnome-do and today it is completely blocking my password sign-in form. Which of course means I can't do anything at all. I know this is my own fault, and yes I'm a dumb noob, but ...
1
vote
0answers
14 views

passwd : Authentication token manipulation error (Different than other questions)

I'm trying to change password with single command. The command is, echo -e "current_password\nnew_password\nnew_password" | passwd Here's the Output of the command... Changing password for adarsh. (...
0
votes
0answers
35 views

Trouble Resetting Mysql root password

Fresh install of Mariadb. I tried following the instructions here to reset the root passwordCannot Log in to the MySQL Server. When got to sudo /usr/sbin/mysqld --skip-grant-tables --skip-networking &...
-1
votes
0answers
22 views

How to “forget” user credentials after logging in to a windows share (samba) [migrated]

I logged in from my Mint to a windows share (which is actually a linux running samba, if it's relevant), typed in the password, and got it. Even though I marked it to forget the password immidiatly, ...
0
votes
0answers
58 views

How to Reset Root password without login? (I know current Root password)

I want to change the root password of my Ubuntu Server without logging in. I know the current root password. I've tried ssh root@SERVER_IP echo "currentpassword|newpass|newpassagain" but it's not ...
0
votes
2answers
34 views

Sign-in to Change old password

I have not used ubuntu before and installed it on an old pc. Due to a few personal problems it has remained unused for several months. I returned to it today and do not remember the sign-in password. (...
0
votes
0answers
24 views

Wine keeps asking for password then program freezes

I am trying to open a two way radio software program which works fine on Windows but I want it to work on this laptop using Ubuntu 14.04. Each time I click on the the exec of the program, Wine prompts ...
0
votes
1answer
36 views

Password in the terminal

I am new to Ubuntu (trying to get away from the clutches of Microsoft). I downloaded Ubuntu 14, then upgraded to Ubuntu 16. Now I am trying to understand the command line, and every time I try to do ...
-1
votes
0answers
29 views

administrative password changed after losing but now doesn't login

I did the recovery mode then root then after receiving authentication token manipulation error I did the mount remount then chmod 640 /etc/shadow then when I tried the recovery on root passwd '...
0
votes
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. ...
0
votes
0answers
29 views

16.04 standard user password fails login, using timekpr

I have struggled with this all day. I installed Ubuntu 16.04 on Lenovo Yoga II and all went well. I installed myself as admin. then, I looked for parental controls and found timekpr, so I installed ...
0
votes
1answer
21 views

Running two scripts on profile login (bash & sudo bash)

I have two scripts which I would like to be run when I log into my profile. ~/.scripts/startup/user-sensei-raw-startup.sh: ids=$(xinput list | awk '/SteelSeries Sensei Raw Gaming Mouse .*pointer/ {...
2
votes
2answers
104 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:...
-2
votes
1answer
31 views

Creating long root passwords

Lets say I have root password somepass. Is there a way to create a script that changes my password to a string consisting of the original password concatenated with itself n times ? I.e., if n=3, the ...
1
vote
1answer
36 views

How do I update shadow file password hashes after changing the encryption method?

I had gone through with this link. Suppose my current-encr is SHA-512, SHA-256, or another, the password hash would be stored (in /etc/shadow) of the user based on the current encr and would use ...
1
vote
0answers
12 views

Gnome2 Keyring displaying Large Green Tick

When an application wants to access a stored key or certificate in Gnome 2 Key Storage I get a password box with a green bordered white box with a green tick inside. The box overlays the password ...
0
votes
1answer
31 views

Disable Show Password in WiFi Network Connection

WiFi connection management in Ubuntu as option to Show Password. If PC unlocked then someone can check what is the password set for WiFi. Ideally there should not be Show Password option at all. If ...
0
votes
1answer
45 views

How to completely remove phpMyAdmin without knowing its password?

I know there are more questions about this problem "How to remove phpMyAdmin" but they did not work, because I lost my password! I lost my phpMyAdmin and MySQL password and username! I don't remember ...
1
vote
0answers
140 views

Asus E200H, keyboard does not work for entering encryption password

For the disk encryption password, I cannot type anything and the keyboard/mouse doesn't work. I've tried the options i8042.nomux=1 i8042.reset to no luck. With the option nosplash, I see this: [ ...
-1
votes
1answer
23 views

locked workstation

I cannot login to my system. Ubuntu 16.04 LTS on ASUS X58L notebook. I left the workstation in suspend mode. My kids entered wrong passwords several times. they just typed characters and then hit ...
0
votes
1answer
75 views

Provide password to `nmcli con up` in terminal 14.04

I am trying to connect to my VPN using terminal. My VPN password is a TOTP, so cannot save it to the connection conf file. When I try to connect, a dialog appear to enter password. I want to do it in ...