sudo su - anotherusername not prompting for password
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up vote
1
down vote
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I am new to Redhat linux. I am trying to run the following command and would like to know why it is not prompting for password?
Here is what I am doing. I open the terminal window and enter my username and password. After that I run the following command
sudo su - anotherusername
The command runs successfully without prompting for password of anotherusername. I want to know why I don't get password prompt?
Are there any circumstances where I will get password prompt for anotherusername?
Or Is there a different command that will prompt me for anotherusername password?
I mistakenly posted this question in StackOverflow https://stackoverflow.com/questions/46632690/sudo-su-username-not-prompting-for-password
and I was told that if my username is part of sudoers group then I will not get password prompt.
Just want to confirm if that is the only reason or there are other reasons as well for not receiving password prompt.
I will really appreciate your help.
linux shell sudo
asked Oct 8 '17 at 16:33
jbl
63
add a comment |Â
up vote
1
down vote
favorite
I am new to Redhat linux. I am trying to run the following command and would like to know why it is not prompting for password?
Here is what I am doing. I open the terminal window and enter my username and password. After that I run the following command
sudo su - anotherusername
The command runs successfully without prompting for password of anotherusername. I want to know why I don't get password prompt?
Are there any circumstances where I will get password prompt for anotherusername?
Or Is there a different command that will prompt me for anotherusername password?
I mistakenly posted this question in StackOverflow https://stackoverflow.com/questions/46632690/sudo-su-username-not-prompting-for-password
and I was told that if my username is part of sudoers group then I will not get password prompt.
Just want to confirm if that is the only reason or there are other reasons as well for not receiving password prompt.
I will really appreciate your help.
linux shell sudo
asked Oct 8 '17 at 16:33
jbl
63
1
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
1
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04
add a comment |Â
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I am new to Redhat linux. I am trying to run the following command and would like to know why it is not prompting for password?
Here is what I am doing. I open the terminal window and enter my username and password. After that I run the following command
sudo su - anotherusername
The command runs successfully without prompting for password of anotherusername. I want to know why I don't get password prompt?
Are there any circumstances where I will get password prompt for anotherusername?
Or Is there a different command that will prompt me for anotherusername password?
I mistakenly posted this question in StackOverflow https://stackoverflow.com/questions/46632690/sudo-su-username-not-prompting-for-password
and I was told that if my username is part of sudoers group then I will not get password prompt.
Just want to confirm if that is the only reason or there are other reasons as well for not receiving password prompt.
I will really appreciate your help.
linux shell sudo
asked Oct 8 '17 at 16:33
jbl
63
I am new to Redhat linux. I am trying to run the following command and would like to know why it is not prompting for password?
Here is what I am doing. I open the terminal window and enter my username and password. After that I run the following command
sudo su - anotherusername
The command runs successfully without prompting for password of anotherusername. I want to know why I don't get password prompt?
Are there any circumstances where I will get password prompt for anotherusername?
Or Is there a different command that will prompt me for anotherusername password?
I mistakenly posted this question in StackOverflow https://stackoverflow.com/questions/46632690/sudo-su-username-not-prompting-for-password
and I was told that if my username is part of sudoers group then I will not get password prompt.
Just want to confirm if that is the only reason or there are other reasons as well for not receiving password prompt.
I will really appreciate your help.
linux shell sudo
linux shell sudo
asked Oct 8 '17 at 16:33
jbl
63
asked Oct 8 '17 at 16:33
jbl
63
edited Oct 9 '17 at 0:12
asked Oct 8 '17 at 16:33
jbl
63
asked Oct 8 '17 at 16:33
jbl
63
asked Oct 8 '17 at 16:33
jbl
63
63
1
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
1
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04
add a comment |Â
1
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
1
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04
1
1
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
1
1
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04
add a comment |Â
2 Answers
2
active
oldest
votes
up vote
2
down vote
sudo su runs su as root; thus there is no need for su to ask a password.
The question might be why sudo does not ask for a password (the invoking user's or root's). The output of sudo -l may explain that. Or sudo has been invoked before and considers the formerly entered password still valid.
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
add a comment |Â
up vote
0
down vote
Try searching for the username of the user running the sudo command in /etc/sudoers:
$ sudo grep yourusername /etc/sudoers
yourusername ALL=(ALL) NOPASSWD: ALL
If the output of that grep command contains NOPASSWD:, then use the visudo command to edit and remove the NOPASSWD: from that line.
Also, you'll be prompted for the password of the user running the sudo command, not the password of the account that you're trying to login to.
answered Oct 8 '17 at 17:28
L.Ray
1968
sudo -iu anotherusernamewould be somewhat easier, though
– roaima
Oct 8 '17 at 20:56
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
sudo su runs su as root; thus there is no need for su to ask a password.
The question might be why sudo does not ask for a password (the invoking user's or root's). The output of sudo -l may explain that. Or sudo has been invoked before and considers the formerly entered password still valid.
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
add a comment |Â
up vote
2
down vote
sudo su runs su as root; thus there is no need for su to ask a password.
The question might be why sudo does not ask for a password (the invoking user's or root's). The output of sudo -l may explain that. Or sudo has been invoked before and considers the formerly entered password still valid.
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
add a comment |Â
up vote
2
down vote
up vote
2
down vote
sudo su runs su as root; thus there is no need for su to ask a password.
The question might be why sudo does not ask for a password (the invoking user's or root's). The output of sudo -l may explain that. Or sudo has been invoked before and considers the formerly entered password still valid.
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
sudo su runs su as root; thus there is no need for su to ask a password.
The question might be why sudo does not ask for a password (the invoking user's or root's). The output of sudo -l may explain that. Or sudo has been invoked before and considers the formerly entered password still valid.
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
edited Oct 8 '17 at 17:03
Jeff Schaller
32.3k849109
32.3k849109
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
answered Oct 8 '17 at 16:38
Hauke Laging
53.7k1282130
53.7k1282130
add a comment |Â
add a comment |Â
up vote
0
down vote
Try searching for the username of the user running the sudo command in /etc/sudoers:
$ sudo grep yourusername /etc/sudoers
yourusername ALL=(ALL) NOPASSWD: ALL
If the output of that grep command contains NOPASSWD:, then use the visudo command to edit and remove the NOPASSWD: from that line.
Also, you'll be prompted for the password of the user running the sudo command, not the password of the account that you're trying to login to.
answered Oct 8 '17 at 17:28
L.Ray
1968
sudo -iu anotherusernamewould be somewhat easier, though
– roaima
Oct 8 '17 at 20:56
add a comment |Â
up vote
0
down vote
Try searching for the username of the user running the sudo command in /etc/sudoers:
$ sudo grep yourusername /etc/sudoers
yourusername ALL=(ALL) NOPASSWD: ALL
If the output of that grep command contains NOPASSWD:, then use the visudo command to edit and remove the NOPASSWD: from that line.
Also, you'll be prompted for the password of the user running the sudo command, not the password of the account that you're trying to login to.
answered Oct 8 '17 at 17:28
L.Ray
1968
sudo -iu anotherusernamewould be somewhat easier, though
– roaima
Oct 8 '17 at 20:56
add a comment |Â
up vote
0
down vote
up vote
0
down vote
Try searching for the username of the user running the sudo command in /etc/sudoers:
$ sudo grep yourusername /etc/sudoers
yourusername ALL=(ALL) NOPASSWD: ALL
If the output of that grep command contains NOPASSWD:, then use the visudo command to edit and remove the NOPASSWD: from that line.
Also, you'll be prompted for the password of the user running the sudo command, not the password of the account that you're trying to login to.
answered Oct 8 '17 at 17:28
L.Ray
1968
Try searching for the username of the user running the sudo command in /etc/sudoers:
$ sudo grep yourusername /etc/sudoers
yourusername ALL=(ALL) NOPASSWD: ALL
If the output of that grep command contains NOPASSWD:, then use the visudo command to edit and remove the NOPASSWD: from that line.
Also, you'll be prompted for the password of the user running the sudo command, not the password of the account that you're trying to login to.
answered Oct 8 '17 at 17:28
L.Ray
1968
edited Oct 10 '17 at 1:07
answered Oct 8 '17 at 17:28
L.Ray
1968
answered Oct 8 '17 at 17:28
L.Ray
1968
answered Oct 8 '17 at 17:28
L.Ray
1968
1968
sudo -iu anotherusernamewould be somewhat easier, though
– roaima
Oct 8 '17 at 20:56
add a comment |Â
sudo -iu anotherusernamewould be somewhat easier, though
– roaima
Oct 8 '17 at 20:56
sudo -iu anotherusername would be somewhat easier, though– roaima
Oct 8 '17 at 20:56
sudo -iu anotherusername would be somewhat easier, though– roaima
Oct 8 '17 at 20:56
add a comment |Â
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1
Tangentially related: unix.stackexchange.com/questions/218169/…
– Kusalananda
Oct 8 '17 at 16:39
1
Possibly: unix.stackexchange.com/q/382060/117549
– Jeff Schaller
Oct 8 '17 at 17:04