We are unable to solve the below error in Ubuntu16.04:   Permission denied (publickey,password).   We have tried .  What else can we try?
27950
I just installed Ubuntu 14.04 and LAMP on that. Then, I wanted to configure my server, so tried out  tutorial.  When I give the command:  ssh root@localhost   I get : Permission denied, please try again. I have logged in as root user through the command :  sudo -i   I also tried the same, by logging in through:  sudo -s   I use the same password as that I used to log in as user, but still am getting the same error message.  Could someone help me out here?  PS: I looked into  but didn't seem to work for me.
49465
I had enabled root login before and tried to change its password using this . But after successfully changing the password and locking it via sudo passwd -dl root. I cannot login back to SSH, it says Access is denied.  I have two users on my machine. root and admin, admin does not have su permission. When I try to use sudo on admin user, it says that admin is not in the sudoers file. That is why i need my su user back.
94820
Symbolic link not working, using standard UBUNTU 16 LTS... It shows "Permission denied" where I expected to get access, not working even after chown.  Full example:  sudo rm /tmp/file.txt  # if exist, remove  cd ~ sudo chmod 666 data/file.txt ls -l data/file.txt    # "-rw-rw-rw-" as expected more data/file.txt     # working fine sudo ln -sf $PWD/data/file.txt /tmp/file.txt  # fine ls -l /tmp/file.txt    # "lrwxrwxrwx",  /tmp/file.txt -&gt; /home/thisUser/file.txt more /tmp/file.txt     # fine  sudo chown -h postgres:postgres /tmp/file.txt  sudo more /tmp/file.txt   #  NOT WORK! but its is sudo! and 666!
49449
My user account on Windows 7 is part of the Administrators group which has a full control permissions on C:\inetpub\wwwroot:    However, when I try to create a folder in it, I get the "access denied" error. This is fixed by adding my specific user account to the list but that shouldn't be necessary should it?
61861
I'm using Kubuntu 18.04 and I want to run the kate editor with root privileges  sudo kate produces the message running kate as root is not possible. I think that's utterly silly.  How can I bypass it? Answer: just edit the file, even if it's a system file, using plain oldkate.  You don't need root privileges to edit it; you only need root privileges to save it.  When you save a system file, you'll be asked for the root password.  Supply it and the save takes place.  Easy!!
27161
What could cause touch to fail with this error message?  touch: cannot touch `foo': No such file or directory   Note that an error due to incorrect permissions looks different:  touch: cannot touch `foo': Permission denied
5662
is anything else supposed to be here? I am using Ubuntu gnome and my keyboard is unresponsive for encryption password. Do I need any more modules, and if so where do I add them.  # List of modules that you want to include in your initramfs. # They will be loaded at boot time in the order below. # # Syntax:  module_name [args ...] # # You must run update-initramfs(8) to effect this change. # # Examples: # # raid1 # sd_mod
8580
I tried to fix my hard drive using Ubuntu but I encountered an error message and didn't know how to proceed. I need to fix my bad sectors   fsck /dev/sdb   fsck from util-linux 2.20.1   e2fsck 1.42.5 (29-Jul-2012)   fsck.ext2: Permission denied while trying to open /dev/sdb   You must have r/w access to the filesystem or be root
2210
I accidently ran  sudo chmod 755 -R /   instead of  sudo chmod 755 -R ./   I stopped it after few seconds, but now there is some problems such as  sudo: must be setuid root   How can I revert permissions back?
666
I'm working on a Ubuntu system, and my client has completely forgotten his administrative password. He doesn't even remember entering one; however it is there.  I've tried the suggestions on the website, and I have been unsuccessful in deleting the password so that I can download applets required for running some files. Is there a solution?
83846
How to make some file that contains crucial data protected? For instance, suppose I have some files that are important, is there any method or strategy to make these kind of file more protected on Ubuntu? I even want to make some files ask for a password whenever someone tries to open it. Does it affect the version of Ubuntu in terms of security policy? May I use any encryption algorithm externally? Regards.
63793
I am lazy at home and use password authentication for my home machines. I am ready to move to key based authentication. There are many options on the web on how to do this, including catting then sshing the key over, scping the key over directly, etc.  I am looking for the easiest and recommended way to copy a key over, hopefully there is a convenience wrapper somewhere in the Ubuntu ssh package?  I'm already aware on .
9520
I´d like to enable the ssh root access on Ubuntu 14.04. Editing the /etc/ssh_config (PermitRootLogin yes) didn't affect anything.
6139
What is the default password of the sudo? I visit some forums, it tells that the default password is password, but it doesn't work, how can I determine the password?
25636
I was trying to install , and I got  npm ERR! Error: EACCES, Permission denied '/usr/local/lib/node_modules' npm ERR!  npm ERR! Please use 'sudo' or log in as root to run this command. npm ERR!  npm ERR!     sudo npm "install" "." "--force" "--global" npm ERR!  npm ERR! or set the 'unsafe-perm' config var to true. npm ERR!  npm ERR!     npm config set unsafe-perm true   How can log in as a root?
110539
My problem is :  I developed successfully RSA Key based ssh login on board from system. When a client logs in for the first time, ask about private key and passphrase also which works fine. In second time login, ssh doesn't ask private key or password, directly login on board.  Client side use Ubuntu 16.04 and on board customizes Ubuntu.   First time login with below command:  ssh -i ~/.ssh/id_rsa user@board_ip   //works fine  Second time:  ssh user@board_ip  //never ask password and public key - problem  First time:  ssh user@board_ip  //not able to login without key - works fine  As per my understanding, I made a mistake in the sshd_config file on the board. I played with below settings but failed it all the time.  StrictModes yes RSAAuthentication yes PubkeyAuthentication yes #PasswordAuthentication yes                                             PermitEmptyPasswords no   Project requirement is secure login, mainly on ssh.  To achive more security SSH password based login, we shifted to key based login.  As explain above after change all configuration.  SSH login require private key and password also.  After logout and after sometime login again, ssh doesn't require key or password, project requirement need key and password each and everytime.
57234
W: GPG error: http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 ./ Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 2F7F0DA5FD5B64B9 W: The repository 'http://download.opensuse.org/repositories/home:/strycore/xUbuntu_16.04 ./ Release' is not signed. N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use. N: See apt-secure(8) manpage for repository creation and user configuration details.   I am trying to get rid of the above error message seemingly related to release key and opensuse url.  What would be the proper solution?