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Questions tagged [passwd]

unix/mac questions about password changes or storage, the related `.passwd` file or `passwd` command

140 questions
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How do I generate an encrypted password string, as it is in /etc/shadow?

I'm trying to mimic the creation of password strings as they appear in /etc/shadow. This is what I've got so far, but the encrypted passwords don't match, when I use the same password and the same salt. 5000 rounds is standard for crypt, so I used…
polemon
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Mojolicious and Passwd::Unix

I'm trying to return the list of Unix users on this perl script. I'm using the Mojolicious framework with Passwd::Unix. References: Mojolicious (http://metacpan.org/pod/Mojolicious) Passwd::Unix (http://metacpan.org/pod/Passwd::Unix) That's my…
Caio Tarifa
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Using shell_exec('passwd') to change a user's password

I need to be able to change the users' password through a web page (in a controlled environment). So, for that, I'm using this code:
RSilva
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Docker set user password non-interactively

I would like to set my user vault's password in the Dockerfile and I have tried RUN echo -e "pass\npass" | passwd "${USER}" but get Enter new UNIX password: Retype new UNIX password: Sorry, passwords do not match passwd: Authentication token…
stdcerr
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Got error "passwords do not match" using passwd in docker

I wanna create a user had random password for FTP in Docker. The section of Dockerfile like below: RUN useradd web RUN export ftppass=`cat /proc/sys/kernel/random/uuid` RUN echo -e "$ftppass\n$ftppass" | passwd web But I got an error in last…
pea3nut
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How to modify standard linux commands?

I am looking for a way to edit the source code of common Linux commands (passwd, cd, rm, cat) Ex. Every time the 'cat' command is called (by any user), it performs its regular function, but also prints "done" to stdout after.
The doobverse
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Use chef to run bash passwd

I am having a hard time figuring out how to use chef to run a bash command (passwd) I know how to set up the bash resource block but how do I set it up so that is will take the variable password = 'abc123'. The user I want to do it for is adminblah…
user9753902
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How do I use expect to connect via ssh to a system and change the password of the host system?

I am automating the process of: Connect to a system named "alpha" via ssh with password "alpha" for username "alpha". Once connected I would like to set the root password (to "kickass"). The system I am connecting to doesn't have a root password by…
fzkl
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Change password at Linux Snappy Ubuntu Core

I wanted ask you, how add user into Snappy Ubuntu Core. When I downloaded image of Ubuntu Core, there was user "ubuntu" with password "ubuntu" and sudo group. I'll write it with small tutorial (commands) for these who try to deal with same…
Payne
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should my program lock /etc/.pwd.lock when reading /etc/passwd?

I'm writing some program that reads /etc/{passwd,group}. I learned that any program should lock /etc/.pwd.lock by calling lckpwdf() before writing the above files so that write collisions can be avoided. I guess reading operation also needs this…
fpemud
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LDAP users not able to change their password using passwd command

I have a basic LDAP setup without SSL configured. Users are able to login but not able to change their password using passwd command. I have gone though many blogs but no luck. I have disabled selinux and iptables. Any help on this will be much…
Krishnamurthy Dasari
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unix home directories without entries in /etc/passwd

I am able to get both listings ( /etc/passwd and /home ) but how to script something like read line of /etc/passwd, parse home directory, then look for that in /home . If it doesn't exist, throw an error, if it does exist, move along. /etc/passwd…
mohuddle
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error message Unknown user name 'root' when changing password

I mounted a guest centos system and changed inittab file to single user mode. Then I unmounted it and used virsh console to access the guest system in single user mode. However I got 'unknown user name' message as following: [root@guest34 /]# passwd…
Purres
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C++ Passwd, Root Priviledges

I have written a c++ script that disables or enables users within a Solaris environment. This is done by calling the passwd through sprintf(cmd, "/usr/bin/passwd -l %s", argv[1]); However the script is not executed by root, but by another…
user2428994
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What are ideal /etc/passwd file permissions?

Is there any risk keeping open world-read access to passwd file? Why is by default passwd file world-readable
user1295164
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