Questions tagged [su]
command for substituting user i.e. logging to a session as a different user.
192
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Unable to login to root after running ansible scripts
I am currently not able to login to my super user. Here is the sequence of events
~ su
password:
su: using restricted shell which zsh
su: failed to execute which zsh: No such file or directory
...
0
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1
answer
163
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is not in the sudoers file. this incident will be reported and authentication failure at the same time
I tried to install something with sudo but I received: ".... is not in the sudoers file. this incident will be reported". I used "su -" and "su root" to fix this problem ...
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2
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All users locked - login not possible
attached you can find the terminal of my homebridge account. The only account which is actually able to logon:
homebridge@raspberrypi:/var/lib/homebridge
$ su pi su: Authentication failure
homebridge@...
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7
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2
answers
1k
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Can't use su command to interactively login as another user
I am currently using ubuntu 20.04 machine.
I created a user with password using the useradd command.
I need to change the PATH variable of that user. So i used su - <username> to interactivelly ...
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1
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How to build "su" from sources?
Try to build custom "su" on Ubuntu 20.04, but start from original sources for test (without changes).
Run
apt-get source login
I got shadow-4.8.1 dir. Run
./configure
make
and try run
src/...
4
votes
1
answer
8k
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su: user does not exist or the user entry does not contain all the required fields
In Ubuntu Studio 22.04 LTS I usually log in as a non-privileged domain user. If I need to perform an administrative task (in a terminal window), I have previously used "su" to change to a ...
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0
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29
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sudo command is not working [duplicate]
The file permissions of my ubuntu system got changed somehow and running any sudo command gives the following error
sudo: /etc/sudo.conf is world writable
sudo: /usr/bin/sudo must be owned by uid 0 ...
2
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1
answer
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When I run sudo -i or sudo su I get an error
Error when running sudo su:
su: failed to execute /bi: No such file or directory
Error when running sudo -i:
sudo: /bi: command not found
How do I fix this error?
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41
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su and sudo commond could not work
apt install and update commands need the read and write of root or administrators. but it does not work now.
$ sudo
sudo: /usr/bin/sudo must be owned by uid 0 and have the setuid bit set
$ su
...
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su: Permission denied as root
I added my Ubuntu Machine to AD and I can do an ID these user accounts
but when I'm logged in as root I can't su to these accounts
e.g.
su: Permission denied
any reason why?
is there something I miss ...
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96
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su command wont allow PW entry
I tried to get some files from a damaged Ubuntu OS on an USB stick using su in terminal and terminal wouldn't let me enter the password or type anything at all
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2
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2
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Unable to edit Software Sources (and various other things) due to Run as root - KDE su prompt "Permission denied"
I cannot seem to get any of the KDE su prompts on my Ubuntu Studio install to work. I have set a password for the root account via the terminal and have successfully logged on as root via the terminal ...
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1
answer
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sudo su command not working su: failed to execute root: No such file or directory
su: failed to execute root: No such file or directory
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1
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2k
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user-name is not in sudoer file and su authentication failure
when using sudo command, I met the error: "uers-name is not in the sudoers file, and this incident will be reported". And then I tried some answers in the internet, such as "su root &...
4
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2
answers
4k
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How do you disable su?
I'm confused about su a bit. I just want to prevent users from using su across the board. Authorized users will have sudo access so they can be root if desired. We just want to completely disable su ...
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1
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53
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Playing sound from account accessed with su or ssh
I have two accounts. jamesk and other
I can run X windows applictions using the other account in a couple of ways:
ssh -X other@localhost
xhost + followed by su - other and the then export DISPLAY=:...
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1
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863
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'su' command without a passwd prompt in a remote machine while connected through and ssh session using python's paramiko library
I am writing a python script to automate ssh connection to a remote machine. When connected to the remote machine using python's Paramiko library, if I need to elevate privileges (specifically to ...
1
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0
answers
80
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Difference in behaviour between su and sudo
I'm trying to understand the following difference I observed when running commands using sudo and su. I've simplified it to the most simple form.
Consider the following two commands:
su - myuser -c &...
1
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1
answer
2k
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sudo su not working as it should. Any ideas?
I have searched this page for a similar question but found none.
I use ubuntu 20.0 on hp workstation.
Anytime I use $sudo su and input the root password the system gets stuck.
Although when I use $...
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0
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352
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su command in /usr/bin
I have an udev rule that runs a command as root. I have two different machines running on ubuntu and the su command in these machines are located in different locations. In one computer is located in /...
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2
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155
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How to get variable environment from parent user?
I need to know how it's possible to get environment variable from a parent user after su? For example if I'm evan user and I have variable $DISPLAY=:10.0, then I use "su -" to go to root ...
- 31
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1
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277
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notify-send to other user by crontab
I have script what is running by crontab but as su, at some point is possible that it will send notify by notify-send but I want to this to specific user (login is in $2, but only one will be logged ...
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1
answer
4k
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How to switch from root to user in Ubuntu running in Termux?
I recently installed Ubuntu via Termux on my android phone.
This version is specified when I enter the username and password.
Welcome to Ubuntu 20.04.2
I once went from root to user mode by adduser
...
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0
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2k
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How to fix bug "Authentication is needed to run '/usr/share/-apport/dump_acpi_tables.py' as the super user"?
I get an internal error (involving xorg), logging me out and then I have to log back in (restarting any apps, since they were all closed), then I get this error, which I've seen is a bug, but I'm not ...
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108
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login as user X rejected
Adding a user like so:
sudo useradd juliet -p juliet -s /bin/sh
and then typing
su - juliet
Password:
Get the error: su: Authentication failure
Why? And how do I change user?
user1032811
1
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1
answer
3k
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How to switch user (su) to the odoo account? (This account is currently not available error.)
How do I su to the odoo account?
nicholas@mordor:~$
nicholas@mordor:~$ sudo su odoo -
This account is currently not available.
nicholas@mordor:~$
nicholas@mordor:~$ awk -F: '{ print $1 }' /etc/...
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0
answers
38
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Ubuntu 20.04.1: No ability to use sudo and su [duplicate]
I just installed Ubuntu 20.04.1 and I must have screwed up. I have just one user account and with this account I'm unable to use sudo and su. This obviously prevents me from running apt-get and doing ...
0
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1
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2k
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su Authentication failure when switching to non-root with password
I know the password of gqqtest as I can login via ssh.
> psftp [email protected]
Using username "gqqtest".
[email protected]'s password:
Remote working directory is /home/gqqtest
Now ...
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1
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1
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6k
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SSSD with AD: use UID/GID specified on domain server instead of something random?
I have an AD environment with IDMU and specified UID/GID for my domain users. SSSD-connected domain user does not share the same UID/GID on Ubuntu as AD.
Here's the default unedited sssd.conf in ...
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265
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How to change subtitle user's home directory?
I added a user (user2) in a WSL2 environment and then wanna change that user2's home directory to a different directory.
But something must be wrong.
$ usermod -d /var/lib/app1 user2
usermod: no ...
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1
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660
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How to execute 'su(switch user)' command without prompting for a password? [duplicate]
Is there any way to execute the 'su(switch user)' command with the password given in the same command itself like su root -p "password"
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4
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1
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When sudo su vs sudo -i [duplicate]
I am reading some tutorials about Linux configurations:
To accomplish many of the configurations is important and mandatory be the root.
Well I did realize that in many places are used sudo su and ...
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636
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su doesn't work from regular or sudoers
I'm trying to use su command to change my identity on ubuntu 18.04
But from neither regular user to sudoer user or sudoer to regular user it doesnt work!
I get
su: Authentication failure
The sudo ...
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0
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2k
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auto pass password to su (no sudo)
I am trying to pipe a password into su so that I can run su in a script and automatically give it a password. I am running this without sudo and attempting to su into root. I have tried this a few ...
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1
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925
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Why does the su command does not work without sudo [duplicate]
I know it might seem lame but i was just wondering why do we need a sudo command to use su cmd to switch to root user.
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0
answers
73
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Why on Ubuntu 18.04 command "sudo -u username -s" not works as on CentOS 7? [duplicate]
I want to use a system user to separate permissions when I run nodejs scripts.
I created node-user:
sudo useradd -r -m node-user
Then I expected that next command login me in shell node-user:
sudo ...
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3
answers
7k
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Permission denied creating directory after switching user
I switched to a different user with the su command, and now I want to create a file/folder but "permission denied" error appears.
safi_test4@safi-VirtualBox:/home/safi$ su safi_test4
Password:
...
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1
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1
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Ubuntu script that runs commands after su - user
Ubuntu 18.04.3 LTS (GNU/Linux 5.0.0-31-generic x86_64)
GNOME Shell 3.28.4
GNU bash, version 4.4.20(1)-release (x86_64-pc-linux-gnu)
Typically, su - user is called in a terminal and the user then ...
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0
answers
369
views
su {user} not working inside the ssh shell on the server
I am trying to connect to the server as root using ssh command in Ubuntu bash. I use
ssh -p port root@ip
to connect to the server and the config of ssh is a password-less connection ssh with the ...
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2
votes
1
answer
126
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Installing windows 7 on virtual Box in my Ubuntu 18.04 [duplicate]
Helo there,, while am installing windows 7 on virtual box in my ubuntu is it a must that i have a flashdisk or i can just choose the iso file directly?
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1
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561
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Konsole starts in SU mode and asks for password in every window and tab
I am a bit of a newby and I have stumbled upon an annoying thing. Everytime I open a konsole, it is in su and asks for my password. I have searched around and tried all the things recommended on this ...
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0
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31
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Files saved on external drive with Ubuntu 14 have different permissions when displayed with Ubuntu 16
I saved my data on an external drive using a Ubuntu 14 machine. In that Ubuntu 14 machine, I can see in the following:
david@david-Toshiba:/media/david$ pwd
/media/david
david@david-Toshiba:/media/...
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1
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sudo does nothing and su doesn't accept my password
When I type sudo, the command doesn't seem to do anything useful. I expected to be asked for my password or to get a root shell, but instead I only get this:
$ sudo
usage: sudo -h | -K | -k | -V
...
user792295
0
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3
answers
21k
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How to elevate privileges to root in bash and return back?
How to elevate privileges to root in bash? And then how to return back to exactly the previous state? My question is both about elevating/decreasing privileges and possible troubles with some apps, ...
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0
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1k
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"sudo su -" vs. "sudo -i" and /etc/environment
On an Ubuntu 14.04 host that I frequently update (apt-get update followed by apt-get full-upgrade) I have an /etc/environment file with some critical variables in it.
Until recently sudo -i -u fred ...
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1
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3k
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How can I install sudo without using su? [duplicate]
I need to use sudo but when I try to use it, a prompt tells me the command is not found and I need to install sudo.
So when I switch to su so I can gain root access to install sudo, it says auth ...
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2
answers
3k
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Using environment variables with su -c
I try to run nvm as a different user from a bash script. It is installed already and the NVM_DIR environment variable is set in /home/user/.bashrc:
export NVM_DIR="$HOME/.nvm"
[ -s "$NVM_DIR/nvm.sh" ]...
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118
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Can't login to root account
I restricted the use of su by creating an admin group
sudo usermod -a -G admin "admin user"
sudo dpkg-statoverride --update -add root admin 4750 /bin/su
Later I regretted this so I removed the ...
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1
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1
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2k
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sudo is not installed, both sudo and su are not working
When trying to switch to root using sudo su :
Error- sudo is not installed
When trying to switch with su command:
Error- this program is not installed
$ cat /etc/os-release
NAME="Ubuntu"
VERSION="...
1
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1
answer
4k
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Can not root: after removing ZSH and returning to default bash
I can not $ sudo su everytime, I enter the command, the terminal says :
can not execute /usr/bin/zsh no such file or directory
How to return to default bash of Ubuntu and make bash as default ...
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