Questions tagged [passwd]
The passwd tag has no usage guidance.
220
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does /etc/passwd primary group mean you are in that group?
This is in RHEL-8.10 for what it's worth...
in /etc/passwd I have
ron:x:20000:100:me:/home/ron:/bin/bash
so my uid is 20000, and my gid is 100 which as defined by convention in /etc/group is the ...
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Debian passwd package sources - Unable to find patch that modifies passwd utility options
I noticed passwd utility doesn't support the -s/--stdin option on Debian which allows to read password from standard input. With this option you can do something like echo mypassword | passwd -s ...
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What is the meaning of having a username as the last field of an `/etc/passwd` entry?
In Google Compute Engine VM in /etc/passwd file i see an entry like this one:
root:x:0:0:root:/root:my_logged_in_username_here.
What could that mean? The last field is for user command interpreter as ...
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How to reintegrate my users from a backup to a new system fresh installed?
I have had to reinstall my system - it is a Debian but my question addresses any distribution. I have disconnected the hard drive where my /homeis settled to avoid any risk when reinstalling the ...
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Why/When to use passwd -d? [closed]
According with man passwd exists the following information:
-d, --delete
Delete a user's password (make it empty).
This is a quick way to disable a password for an account.
It will set the named ...
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158
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Setting user passwords via kernel parameter
What is the correct syntax to use these bits of information from systemd manual:
systemd-sysusers(8) will look for the credentials passwd.hashed-password., passwd.plaintext-password. and passwd.shell....
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2
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432
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Password not getting set for this user creation script
The following script is supposed to create a user and generate a random password on an Ubuntu machine:
#!/bin/bash
#Script should execute with sudo/root access
if [[ "${UID}" -ne 0 ]]
then
...
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1
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I've forgotten my password but am logged in--what tools can I use to assist in recovery and limit damages?
I have an encrypted hard drive. The hard drive, root user, and primary user all share the same password. I have successfully logged in but seem to have forgotten the password.
I'm looking to limit the ...
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2
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Why should I use `sudo` with the `passwd` command to change the password of another user?
If you look at the permission set of the passwd command, you will see this:
user@apple:~$ ls -l /bin/passwd
-rwsr-xr-x 1 root root 59976 Nov 24 2022 /bin/passwd
/bin/passwd has the SUID bit set and ...
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How do I get rid of password restrictions in passwd
My usual password just doesn't fit into its standards, and frankly this install doesn't need to be fort knox. Is there any way to disable them?
edit: this helped me https://www.reddit.com/r/Gentoo/...
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PAM password "minlen" setting not enforced
I installed Ubuntu 18.04 and manually modified /etc/security/pwquality.conf with the following settings:
minlen = 14
minclass = 4
(without # at the start of the line).
However, when I add a new user ...
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406
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Difference between *LK* in /etc/shadow and /usr/sbin/nologon in /etc/passwd
What is the practical difference between setting *LK* in /etc/shadow and setting /usr/sbin/nologon in /etc/passwd?
When would we choose one over the other? When would we combine them?
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Difference between passwd and passwd- file as well as shadow and shadow- file
on my server running UnraidOS I got a bit suspicious. There are both 'passwd' and 'passwd-' files (same goes for shadow(-)). These ones should be only backups as I understood.
Running:
root@Unraid-...
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How can I reuse an old password?
I recently changed my password on my VMware Photon OS host. Now I want to reset it to the old one again, but passwd does not let me do it and displays the following message:
Password has been already ...
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"passwd" can not read password from standard input on Kali Linux
i'm trying to make a small shell script that creates a new account, it needs to not show the password when writing it. But i got a error and can't find a solution.
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AuditD - Log sudo access to /etc/passwd by all commands but never for other files
I'm struggling with the following task for AuditD
/etc/passwd should be monitored for any access doesn't matter if a cat or sudo cat is used...ok, easy. BUT I should also prevent auditd to log any ...
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Create new user in DCL-935 firmware
For an assignment for school, I am investigating a dlink IP cam firmware for vulnerabilities.
In the emulation I can see there is a user called admin. in the /etc/passwd I can see the password (blank)....
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Password Policy - BAD PASSWORD: The password is just rotated old one
After setting password expiration via:
sudo chage -d 0 username
Then changing the password and login as that user.
When I type "passwd" and try to set the original password I receive message;...
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useradd -p option [duplicate]
I can't understand the purpose of -p option in 'useradd'
Let's create a user
useradd -m -p 'pass1' user1
after running the command above, when trying to log in using su - user1
authentication fails....
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etc shadow file for passwd - calculate not only date but time
I want to know if there is a way to get the last password change date + time stamp ?
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508
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passwd source code
I am trying to look at the source code of the passwd and gpasswd programs. These tools check the effective UID set to zero to complete execution successfully. But I am a noob to C and couldn't find ...
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Source of passwd error messages
I am testing if the passwd command could run if the setuid bit is disabled. I disabled the setuid by running the following command:
chmod 0554 /bin/passwd
After doing so, I tested if the passwd ...
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647
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How to change my password without current password or root access?
I changed my user password two months ago. Logged in. Machine has been up and running since. Now I forgot my new password and want to run a sudo command. 'passwd' wants my current password before ...
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How to check which user has changed their or other user's password?
How can I capture (if there is a log file somewhere) when a user changes their password or another user's password?
I see this log but I can't determine whom change password for user XXXX
Mar 31 12:41:...
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What's the difference between empty password and no password?
As said in this question in comments, empty password and no password are different things. So what's the difference between empty password and no password in Linux Debian?
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Help needed: sudo passwd -l
I used the command sudo passwd -l on my own user account in Ubuntu and now I can't log in anymore. Is there any way to unlock that?
I tried adding "!" in front of my password but it still ...
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What could this portion of the 'Information Security Handbook' by John M.D Hunter possibly mean?
So I am reading this Information Security Handbook by John M.D. Hunter. I quote two paragraphs of the book below:
"An operating system is usually capable of preventing users from performing ...
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107
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How to update user password with the file has password,without prompt key in?
I am using Debian 11,set password with shadow.
I random generate password into file pas:
cat pas
"Th3P@ssw0rd"
When I update password to normal user has sudo privilege,
sudo passwd username
...
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How can a user start its own login shell?
I want the default command for a Docker image to start up a login shell for the container's user.¹
Something like:
…
USER someuser
CMD /bin/zsh --login
That above gets a login shell, but does not ...
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unable to change directory with CD command
My situation might not be typical, and this is a reverse shell I got.
I find myself stuck in the root directory; I can't "cd" to change my current directory to anywhere. However, I can list/...
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changing the password of root remote host with no interaction
How could I change the password for a root account on remote server without a need to enter the password each time?
Localhost is a MacOS computer and I have sshpass installed, remote host in an ...
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Running "su command" as another user
I have a user user1 which is part of wheel group and has all the root privileges .
user1 is able to change password for user2 using the below command
(My understanding is that here passwd is run as ...
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Recovering /etc/passwd file
I deleted my /etc/passwd with my fat fingers.
I saw that there is a /etc/passwd- that looks like a backup file but I cannot copy it to restore the original one since I can't sudo anymore.
My volume is ...
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Password change failed because password does not meet minimum quality requirements. What does this error mean?
On my macOS machine, I tried something like:
passwd derp
After I input the old password and the new password, it shows the following:
passwd: Password change failed because password does not meet ...
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2
answers
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Why does openssl create different hashes for the same string, and how does linux accept the different hashes when switching users?
Background
As an experiment, I was adding new users (as the root user) by manually creating entries into /etc/passwd. To hash the passwords I was using openssl, in particular OpenSSL 1.1.1g but the ...
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passwd results in signal SIGSEGV: segmentation violation
On Ubuntu 18.04 I am attempting to change my password with
sudo passwd myusername
I enter the new password and get this:
Enter new UNIX password:
Retype new UNIX password:
fatal error: ...
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Why Command "cata/etc/..." does not give me any results? [closed]
Why if I type:
cat/etc/passwd
or
cat/etc/shadow
the termnal give back me the message:
no such file or directory found ?
At least I should visualize me like user
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0
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483
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PAM guru help to interpret system-auth password-auth RHEL 7
I have a RHEL 7.9 system which currently has identical system-auth and password-auth files located under /etc/pam.d/. That file is
auth required pam_faillock.so preauth audit deny=3 ...
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454
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How to change the keyphrase in the pass program without reinitializing a pass store from scratch
I'm using the pass application which I find really handy. I want to change the keyphrase (mother password). I had a look at the man page there but i'm not sure what to do. Do I have to use the init ...
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setting temporary password only expiration date
using RHEL 7.9, I have local user accounts defined in /etc/passwd and /etc/shadow.
my password changing process is to email users, when needed, a temporary password.
as root I do passwd <username&...
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Joined linux host to AD server using realmd. Unable to change ad user passwords from the command line
Have a fairly simple setup of one AD server with various linux hosts. We attached the linux hosts to our domain by using:
realm discover domain.example.com
realm join domain.example.com -U user.adm
...
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passwd -S Alternate authentication scheme in use
in RHEL 7.9, I do passwd -S on all accounts in /etc/passwd as part of checking user accounts.
# passwd -S <account name>
root PS 1969-12-30 0 99999 7 -1 (Password set, SHA512 crypt.)
bin LK ...
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Chsh Enterpise login
I installed Fedora 34 and did the Enterprise Login (domain user).
I can't use chsh for change the user default shell to zsh because user does not exists. (It's not present in /etc/passwd because is ...
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2
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AIX 7 - Command To Check If Never Used User Accounts Are Locked
On AIX 7, I am trying to craft a command that would check the user accounts on my system that have never logged in and to check if they are locked. If a user account that has never logged in exists ...
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420
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Change linux password and expire at the same time
I'm learning Linux bash scripting and faced an error without notification. I would like to understand why I can't both change password and expire it at the same time? Additionally, there is no any ...
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Command To Check If Users In /etc/passwd Exist In A Different File
Is it possible to query the /etc/passwd file to view all user UIDS less than 200 and to check if those users are within a file such as /etc/ftpusers?
So far, I have managed to craft the command below ...
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List of Users - RHEL
I want to get list of users - both human and machine who have access to the unix server. OS is:
NAME="Red Hat Enterprise Linux Server"
VERSION="7.9 (Maipo)"
I tried cat /etc/...
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Server ip with multiple domains / but only 1 user on /etc/passwd
I have access on a server that is running multiple domains on it, but when i check the /etc/passwd file i see only 1 user available ? is it mean that each user have his own linux instalation ? virtual ...
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How can I start a login shell with options?
I am messing around and want to have a guest user whose login shell is a restricted one like rbash. Unfortunately there is no rbash executable anywhere on my Slackware installation, so I have to do ...
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how to disable "Retype new password" when changing password in RHEL/CentOS
Is there a configuration setting in RHEL/CentOS thru which Retype new password can be disabled while changing user password?
In shell we can use echo 'username:newpassword' | chpasswd
I have to set it ...
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