Granting sudo access without prompting for password

mahmood

12/8/22, 8:43 AM

I have added a username to the sudoer file, but as you can see below, when I run sudo ls I have to enter the password. How can I fix that in order to run passwordless sudo commands for the test user.

test@ubuntu:~$ sudo ls
[sudo] password for test:
test@ubuntu:~$ sudo cat /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults        env_reset
Defaults        mail_badpass
Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL:ALL) ALL
test    ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d
test@ubuntu:~$

UPDATE:

After setting NOPASSWD:, still I have to enter the password. See below:

test@ubuntu:~$ sudo ls
[sudo] password for test:
test@ubuntu:~$ sudo cat /etc/sudoers
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults        env_reset
Defaults        mail_badpass
Defaults        secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"

# Host alias specification

# User alias specification

# Cmnd alias specification

# User privilege specification
root    ALL=(ALL:ALL) ALL
test    ALL=(ALL:ALL) NOPASSWD: ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL

# Allow members of group sudo to execute any command
%sudo   ALL=(ALL:ALL) ALL

# See sudoers(5) for more information on "#include" directives:

#includedir /etc/sudoers.d
test@ubuntu:~$

100

1 + 0

sudo

Score:1

Ubuntu

Amin

12/8/22, 9:08 AM

You can use test ALL=(ALL) NOPASSWD: ALL for giving user test access without password

Note that if test user is in admin or sudo group, it's settings would be overridden in groups settings. To avoid that, write your user settings after group settings:

%admin ALL=(ALL) ALL
%sudo   ALL=(ALL:ALL) ALL
...
test    ALL=(ALL:ALL) NOPASSWD: ALL

0 + 4

mahmood

12/8/22, 9:16 AM

It doesn't work. Please see the updated post.

Amin

12/8/22, 9:51 AM

Is test user in admin or sudo group ? @mahmood

Amin

12/8/22, 10:02 AM

I've updated my answer @mahmood

mahmood

12/8/22, 10:12 AM

OK I found that `%sudo ALL=(ALL) NOPASSWD: ALL` fixes the problem. Thanks for th hints.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Granting sudo access without prompting for password

TH: ให้สิทธิ์การเข้าถึง sudo โดยไม่ต้องถามรหัสผ่าน

RO: Acordarea accesului sudo fără a solicita parola

RU: Предоставление доступа sudo без запроса пароля

VI: Cấp quyền truy cập sudo mà không cần nhắc nhập mật khẩu

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