I am getting the following error while running command "apt-get update":
E: Type 'gpg' is not known on line 1 in source list /etc/apt/sources.list.d/openvpn-as-repo.list
E: The list of sources could not be read.
Can someone please help me solve this error?
The below answer is taken from: https://askubuntu.com/questions/96967/how-do-i-fix-this-e-type-is-not-known-on-line-in-source-list-update
The error indicates a malformed entry in a source file, which causes the update process to abort. To fix it, you have to either fix the entry (if you know what the right entry should look like) or remove it altogether (that's what I'm going to describe, as it's the fastest way to enable you to update your system again).
First, you need to open the file containing the bad entry. The filename is given in the error message, in your example /etc/apt/sources.list.d/some-ppa.list. Open a terminal, and type
sudo nano /etc/apt/sources.list.d/some-ppa.list
and press Enter. After entering your password, you should now see the file opened in the text editor nano.
Now you need to locate the malformed entry. It should be on the line number given in the error message - in your case that would be line 1.
This line should be incomplete and start with the unknown type the update process is complaining about (here ain). Just delete the whole line, and save/close the file with Ctrl+X.
That's it. You should now be able to successfully run the update process.
It seems something went wrong. Redo these commands again.
# wget must be available. If wget is not installed and apt update is broken skip apt update in the next line.
sudo apt update && sudo apt -y install ca-certificates wget net-tools
wget -qO - https://as-repository.openvpn.net/as-repo-public.gpg | sudo apt-key add -
sudo sh -c 'echo "deb http://as-repository.openvpn.net/as/debian bionic main">/etc/apt/sources.list.d/openvpn-as-repo.list'
sudo apt update && sudo apt -y install openvpn-as
long story short,
1.my PATH got messed up so the zsh throws an "command not found" error in the terminal
tried to uninstall and reinstall the homebrew to see if that does anything - it did not.
now sudo throws me an error
sudo: no valid sudoers sources found, quitting
sudo: unable to initialize policy plugin
the reason why(well my guess) sudo throws this error that is that while
I manually delete the files as the homebrew recommended, I must have deleted or done something in
/usr/local so now sudo uid is not 0 anymore.
I have tried
mount -uw /
chown 0 /private/etc/sudoers
exit
and these instructions
A. https://apple.stackexchange.com/questions/157772/sudo-etc-sudoers-is-owned-by-uid-501-should-be-0?fbclid=IwAR0HPT64TzzkuKs1ymsqb2l8HThXqRpGifX_QAdzrK5z5XgecavTzWiQVh0
B. https://forums.macrumors.com/threads/not-able-to-use-sudo-commands-in-terminal.2101126/?fbclid=IwAR3BL-Sajkrsp02i5MCAKM7DZ0C83xUFOg9pzRhpG1hLrzpk9FbnDbbjoaM
but none of them worked.
What is the last thing I can do?
If I delete the drive and re-install it(disk utility), will it also change the sudo problem?
That is, of course, the last thing I would like to do. but I am considering it now.
Any thoughts?
HELP!
After digging everywhere, I found the answer here,
My sudo command not working
One of the main issues I had was that the sudo uid set to 501 instead of 0.
#GordonDavisson had a solution using "Script Editor" and run the code
do shell script "chown root:wheel /etc/sudoers; chmod 440 /etc/sudoers; chmod -N /etc/sudoers" with administrator privileges
as he mentioned.
This successfully changed my root. I checked it by running
ls -l /etc/sudoers
in the terminal.
After this, I could re-install the homebrew.
Though I encounter unusual steps, where homebrew was running,
it asked me several times to enter the password for different stages
which did not happen before.
But after re-installing the Homebrew, I changed my $PATH
export PATH=$PATH:/usr/local/git/bin:/usr/local/bin
and now I can live again!
I am trying to compile some sources using a makefile. In the makefile there is a bunch of commands that need to be ran as sudo.
When I compile the sources from a terminal all goes fine and the make is paused the first time a sudo command is ran waiting for password. Once I type in the password, make resumes and completes.
But I would like to be able to compile the sources in NetBeans. So, I started a project and showed netbeans where to find the sources, but when I compile the project it gives the error:
sudo: no tty present and no askpass program specified
The first time it hits a sudo command.
I have looked up the issue on the internet and all the solutions I found point to one thing: disabling the password for this user. Since the user in question here is root. I do not want to do that.
Is there any other solution?
Granting the user to use that command without prompting for password should resolve the problem. First open a shell console and type:
sudo visudo
Then edit that file to add to the very end:
username ALL = NOPASSWD: /fullpath/to/command, /fullpath/to/othercommand
eg
john ALL = NOPASSWD: /sbin/poweroff, /sbin/start, /sbin/stop
will allow user john to sudo poweroff, start and stop without being prompted for password.
Look at the bottom of the screen for the keystrokes you need to use in visudo - this is not vi by the way - and exit without saving at the first sign of any problem. Health warning: corrupting this file will have serious consequences, edit with care!
Try:
Use NOPASSWD line for all commands, I mean:
jenkins ALL=(ALL) NOPASSWD: ALL
Put the line after all other lines in the sudoers file.
That worked for me (Ubuntu 14.04).
Try:
ssh -t remotehost "sudo <cmd>"
This will remove the above errors.
After all alternatives, I found:
sudo -S <cmd>
The -S (stdin) option causes sudo to read the password from the standard input instead of the terminal device.
Source
Above command still needs password to be entered. To remove entering password manually, in cases like jenkins, this command works:
echo <password> | sudo -S <cmd>
sudo by default will read the password from the attached terminal. Your problem is that there is no terminal attached when it is run from the netbeans console. So you have to use an alternative way to enter the password: that is called the askpass program.
The askpass program is not a particular program, but any program that can ask for a password. For example in my system x11-ssh-askpass works fine.
In order to do that you have to specify what program to use, either with the environment variable SUDO_ASKPASS or in the sudo.conf file (see man sudo for details).
You can force sudo to use the askpass program by using the option -A. By default it will use it only if there is not an attached terminal.
Try this one:
echo '' | sudo -S my_command
For Ubuntu 16.04 users
There is a file you have to read with:
cat /etc/sudoers.d/README
Placing a file with mode 0440 in /etc/sudoers.d/myuser with following content:
myuser ALL=(ALL) NOPASSWD: ALL
Should fix the issue.
Do not forget to:
chmod 0440 /etc/sudoers.d/myuser
Login into your linux. Fire following commands. Be careful, as editing sudoer is a risky proposition.
$ sudo visudo
Once vi editor opens make the following changes:
Comment out Defaults requiretty
# Defaults requiretty
Go to the end of the file and add
jenkins ALL=(ALL) NOPASSWD: ALL
If by any chance you came here because you can't sudo inside the Ubuntu that comes with Windows10
Edit the /etc/hosts file from Windows (with Notepad), it'll be located at: %localappdata\lxss\rootfs\etc, add 127.0.0.1 WINDOWS8, this will get rid of the first error that it can't find the host.
To get rid of the no tty present error, always do sudo -S <command>
This worked for me:
echo "myuser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
where your user is "myuser"
for a Docker image, that would just be:
RUN echo "myuser ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers
In Jenkins:
echo '<your-password>' | sudo -S command
Eg:-
echo '******' | sudo -S service nginx restart
You can use Mask Password Plugin to hide your password
Make sure the command you're sudoing is part of your PATH.
If you have a single (or multi, but not ALL) command sudoers entry, you'll get the sudo: no tty present and no askpass program specified when the command is not part of your path (and the full path is not specified).
You can fix it by either adding the command to your PATH or invoking it with an absolute path, i.e.
sudo /usr/sbin/ipset
Instead of
sudo ipset
Command sudo fails as it is trying to prompt on root password and there is no pseudo-tty allocated (as it's part of the script).
You need to either log-in as root to run this command or set-up the following rules in your /etc/sudoers
(or: sudo visudo):
# Members of the admin group may gain root privileges.
%admin ALL=(ALL) NOPASSWD:ALL
Then make sure that your user belongs to admin group (or wheel).
Ideally (safer) it would be to limit root privileges only to specific commands which can be specified as %admin ALL=(ALL) NOPASSWD:/path/to/program
I think I can help someone with my case.
First, I changed the user setting in /etc/sudoers referring to above answer. But It still didn't work.
myuser ALL=(ALL) NOPASSWD: ALL
%mygroup ALL=(ALL:ALL) ALL
In my case, myuser was in the mygroup.
And I didn't need groups. So, deleted that line.
(Shouldn't delete that line like me, just marking the comment.)
myuser ALL=(ALL) NOPASSWD: ALL
It works!
Running shell scripts that have contain sudo commands in them from jenkins might not run as expected. To fix this, follow along
Simple steps:
On ubuntu based systems, run " $ sudo visudo "
this will open /etc/sudoers file.
If your jenkins user is already in that file, then modify to look like this:
jenkins ALL=(ALL) NOPASSWD: ALL
save the file
Relaunch your jenkins job
you shouldnt see that error message again :)
This error may also arise when you are trying to run a terminal command (that requires root password) from some non-shell script, eg sudo ls (in backticks) from a Ruby program. In this case, you can use Expect utility (http://en.wikipedia.org/wiki/Expect) or its alternatives.
For example, in Ruby to execute sudo ls without getting sudo: no tty present and no askpass program specified, you can run this:
require 'ruby_expect'
exp = RubyExpect::Expect.spawn('sudo ls', :debug => true)
exp.procedure do
each do
expect "[sudo] password for _your_username_:" do
send _your_password_
end
end
end
[this uses one of the alternatives to Expect TCL extension: ruby_expect gem].
For the reference, in case someone else encounter the same issue, I was stuck during a good hour with this error which should not happen since I was using the NOPASSWD parameter.
What I did NOT know was that sudo may raise the exact same error message when there is no tty and the command the user try to launch is not part of the allowed command in the /etc/sudoers file.
Here a simplified example of my file content with my issue:
bguser ALL = NOPASSWD: \
command_a arg_a, \
command_b arg_b \
command_c arg_c
When bguser will try to launch "sudo command_b arg_b" without any tty (bguser being used for some daemon), then he will encounter the error "no tty present and no askpass program specified".
Why?
Because a comma is missing at the end of line in the /etc/sudoers file...
(I even wonder if this is an expected behavior and not a bug in sudo since the correct error message for such case shoud be "Sorry, user bguser is not allowed to execute etc.")
I was getting this error because I had limited my user to only a single executable 'systemctl' and had misconfigured the visudo file.
Here's what I had:
jenkins ALL=NOPASSWD: systemctl
However, you need to include the full path to the executable, even if it is on your path by default, for example:
jenkins ALL=NOPASSWD: /bin/systemctl
This allows my jenkins user to restart services but not have full root access
If you add this line to your /etc/sudoers (via visudo) it will fix this problem without having to disable entering your password and when an alias for sudo -S won't work (scripts calling sudo):
Defaults visiblepw
Of course read the manual yourself to understand it, but I think for my use case of running in an LXD container via lxc exec instance -- /bin/bash its pretty safe since it isn't printing the password over a network.
Using pipeline:
echo your_pswd | sudo -S your_cmd
Using here-document:
sudo -S cmd <<eof
pwd
eof
#remember to put the above two lines without "any" indentations.
Open a terminal to ask password (whichever works):
gnome-terminal -e "sudo cmd"
xterm -e "sudo cmd"
I faced this issue when working on an Ubuntu 20.04 server.
I was trying to run a sudo command from a remote machine to deploy an app to the server. However when I run the command I get the error:
sudo: no tty present and no askpass program specified
The remote script failed with exit code 1
Here's how I fixed it:
The issue is caused by executing a sudo command which tries to request for a password, but sudo does not have access to a tty to prompt the user for a passphrase. As it can’t find a tty, sudo falls back to an askpass method but can’t find an askpass command configured, so the sudo command fails.
To fix this you need to be able to run sudo for that specific user with no password requirements. The no password requirements is configured in the /etc/sudoers file. To configure it run either of the commands below:
sudo nano /etc/sudoers
OR
sudo visudo
Note: This opens the /etc/sudoers file using your default editor.
Next, Add the following line at the bottom of the file:
# Allow members to run all commands without a password
my_user ALL=(ALL) NOPASSWD:ALL
Note: Replace my_user with your actual user
If you want the user to run specific commands you can specify them
# Allow members to run specific commands without a password
my_user ALL=(ALL) NOPASSWD:/bin/myCommand
OR
# Allow members to run specific commands without a password
my_user ALL=(ALL) NOPASSWD: /bin/myCommand, /bin/myCommand, /bin/myCommand
Save the changes and exit the file.
For more help, read the resource in this link: sudo: no tty present and no askpass program specified
That's all.
I hope this helps
The solution to the problem is
If you came across this issue anywhere else apart from the Jenkins instance follow this from the 2nd step. The first step is for the user who is having issue with the Jenkins instance.
Go to Jenkins instance of Google Cloud Console.
Enter the commands
sudo su
visudo -f /etc/sudoers
Add following line at the end
jenkins ALL= NOPASSWD: ALL
Checkout here to understand the rootcause of this issue
No one told what could cause this error, in case of migration from one host to another, remember about checking hostname in sudoers file:
So this is my /etc/sudoers config
User_Alias POWERUSER = user_name
Cmnd_Alias SKILL = /root/bin/sudo_auth_wrapper.sh
POWERUSER hostname=(root:root) NOPASSWD: SKILL
if it doesn't match
uname -a
Linux other_hostname 3.10.17 #1 SMP Wed Oct 23 16:28:33 CDT 2013 x86_64 Intel(R) Core(TM) i3-4130T CPU # 2.90GHz GenuineIntel GNU/Linux
it will pop up this error:
no tty present and no askpass program specified
Other options, not based on NOPASSWD:
Start Netbeans with root privilege ((sudo netbeans) or similar) which will presumably fork the build process with root and thus sudo will automatically succeed.
Make the operations you need to do suexec -- make them owned by root, and set mode to 4755. (This will of course let any user on the machine run them.) That way, they don't need sudo at all.
Creating virtual hard disk files with bootsectors shouldn't need sudo at all. Files are just files, and bootsectors are just data. Even the virtual machine shouldn't necessarily need root, unless you do advanced device forwarding.
Although this question is old, it is still relevant for my more or less up-to-date system. After enabling debug mode of sudo (Debug sudo /var/log/sudo_debug all#info in /etc/sudo.conf) I was pointed to /dev: "/dev is world writable". So you might need to check the tty file permissions, especially those of the directory where the tty/pts node resides in.
I was able to get this done but please make sure to follow the steps properly.
This is for the anyone who is getting import errors.
Step1: Check if files and folders have got execute permission issue.
Linux user use:
chmod 777 filename
Step2: Check which user has the permission to execute it.
Step3: open terminal type this command.
sudo visudo
add this lines to the code below
www-data ALL=(ALL) NOPASSWD:ALL
nobody ALL=(ALL) NOPASSWD:/ALL
this is to grant permission to execute the script and allow it to use all the libraries. The user generally is 'nobody' or 'www-data'.
now edit your code as
echo shell_exec('sudo -u the_user_of_the_file python your_file_name.py 2>&1');
go to terminal to check if the process is running
type this there...
ps aux | grep python
this will output all the process running in python.
Add Ons:
use the below code to check the users in your system
cut -d: -f1 /etc/passwd
Thank You!
1 open /etc/sudoers
type sudo vi /etc/sudoers. This will open your file in edit mode.
2 Add/Modify linux user
Look for the entry for Linux user. Modify as below if found or add a new line.
<USERNAME> ALL=(ALL) NOPASSWD: ALL
3 Save and Exit from edit mode
I had the same error message when I was trying to mount sshfs which required sudo : the command is something like this :
sshfs -o sftp_server="/usr/bin/sudo /usr/lib/openssh/sftp-server" user#my.server.tld:/var/www /mnt/sshfs/www
by adding the option -o debug
sshfs -o debug -o sftp_server="/usr/bin/sudo /usr/lib/openssh/sftp-server" user#my.server.tld:/var/www /mnt/sshfs/www
I had the same message of this question :
sudo: no tty present and no askpass program specified
So by reading others answer I became to make a file in /etc/sudoer.d/user on my.server.tld with :
user ALL=NOPASSWD: /usr/lib/openssh/sftp-server
and now I able to mount the drive without giving too much extra right to my user.
Below actions work for on ubuntu20
edit /etc/sudoers
visudo
or
vi /etc/sudoers
add below content
userName ALL=(ALL) NOPASSWD: ALL
%sudo ALL=(ALL:ALL) NOPASSWD:ALL
I'm not sure if this is a more recent change, but I just had this problem and sudo -S worked for me.
I am trying to execute
sudo -su db2inst1 /opt/ibm/db2/V9.7/bin/db2 force application (1995)
but I get this error:
bash: syntax error near unexpected token `('
However,
sudo -su db2inst1 id
gives me correct output. So it must be something about the ()
If I try
sudo -su db2inst1 /opt/ibm/db2/V9.7/bin/db2 force application \(1995\)
I get
/bin/bash: -c: line 0: syntax error near unexpected token (' \ /bin/bash: -c: line 0: /opt/ibm/db2/V9.7/bin/db2 force application (1995)'
Running /opt/ibm/db2/V9.7/bin/db2 force application (1995) as db2inst1 user gives me the same error, but running
/opt/ibm/db2/V9.7/bin/db2 "force application (1995)"
works fine
The right syntax is
sudo -su db2inst1 '/opt/ibm/db2/V9.7/bin/db2 "force application (1995)"'
NOTE: While this answer seems to have been correct at the time [sudo was changed later that same year to add extra escaping around characters in the arguments with -i and -s], it is not correct for modern versions of sudo, which escape all special characters when constructing the command line to be passed to $SHELL -c. Always be careful and make sure you know what passing a command to your particular version of sudo will do, and consider carefully whether the -s option is really needed for your command and/or, if it would, if you'd be better served with sudo sh -c.
Since you've got both the shell that you're typing into and the shell that sudo -s runs, you need to quote or escape twice. Any of the following three would have worked with this now-ancient version of sudo:
sudo -su db2inst1 '/opt/ibm/db2/V9.7/bin/db2 "force application (1995)"'
sudo -su db2inst1 '/opt/ibm/db2/V9.7/bin/db2 force\ application\ \(1995\)'
sudo -su db2inst1 /opt/ibm/db2/V9.7/bin/db2 force\\ application\\ \\\(1995\\\)
Out of curiosity, why do you need -s? Can't you just do the following?
sudo -u db2inst1 /opt/ibm/db2/V9.7/bin/db2 'force application (1995)'
sudo -u db2inst1 /opt/ibm/db2/V9.7/bin/db2 force\ application\ \(1995\)
Try
sudo -su db2inst1 /opt/ibm/db2/V9.7/bin/db2 force application \(1995\)