Comments on: Understanding /etc/shadow file

By: ashish

ashish — Tue, 07 Feb 2012 08:38:46 +0000

i am having a real problem.. can i encrypt a given string just in the manner linux does so that i can match that encrypted string with real encrypted password??

By: Purna

Purna — Thu, 02 Feb 2012 10:16:55 +0000

Thanks for posting!!!

By: joe

joe — Sun, 01 Jan 2012 10:27:49 +0000

thankx for tell us meaning of last 2 spaces usually blank

By: jitendra

jitendra — Thu, 29 Dec 2011 18:27:01 +0000

what is main file /etc/passwd or /etc/shadow

By: Felix Uy Ventula Jr.

Felix Uy Ventula Jr. — Wed, 21 Dec 2011 08:19:27 +0000

With this instance you need to break the encription layer before we can proceed to the inquiries you like. Then it time we can formulate that kind of scripting code and it depends to the one you like systems.

By: Felix Uy Ventula Jr.

Felix Uy Ventula Jr. — Wed, 21 Dec 2011 08:17:06 +0000

just do the reset password command in the unix command line.
$ User ID= Username
$ resetpassword

By: Anon

Anon — Tue, 29 Nov 2011 19:35:44 +0000

Not technically disabled, just not able to login. Account passwd has not been set but can be set by root.

By: Brian

Brian — Tue, 29 Nov 2011 16:14:55 +0000

Dileepa, (November 17, 2011)

On linux you can use the date command to convert the EPOCH days to the date.
The time reported back is not valid, since I am using a full day for seconds.

date -d @`echo 14712*86400|bc`
Mon Apr 12 20:00:00 EDT 2010

By: Dileepa

Dileepa — Thu, 17 Nov 2011 08:09:49 +0000

Can anybody tell me how to calculate the date the password has been change. I mean how to get the actual password change date.

root:ZW1NcbJpB8Yd6:14712:

according to this log password has been change on 14712- but how do i know which date, which month and which year password changed.

Thank you

By: CallMeBob

CallMeBob — Wed, 12 Oct 2011 20:20:01 +0000

typically you’d just login and type “passwd”, then give your old password and a new password and it would be set for you.

By: bonnieallen

bonnieallen — Thu, 29 Sep 2011 00:22:45 +0000

How do I change my password

By: Abhishek

Abhishek — Thu, 18 Aug 2011 16:53:32 +0000

Hi…can any one tell me…is there any procedure or any scriprt or tool through which i can change the password setting..i mean when i type the password in linux nthng displayed,is there any way to change it with * symbol…so next tym instead of nthyng i will get ******** like this form….thnx in advance…

By: zimmy

zimmy — Mon, 08 Aug 2011 06:18:16 +0000

HI all
can anybody help me

supose any user passwd expire so hw cn we get inforamation regarding this
we dont no wt is user name then hw cn we identify that this user’s passwd hass been expired

mail me pls
zimmyyash@gmail.com

thxx in advance

By: vignemail1

vignemail1 — Tue, 02 Aug 2011 08:00:01 +0000

There are no /etc/shadow file on Mac OS X. All passwords are stored by a daemon (DirectoryService if i’m remember correctly) which store passwords in many hashed kinds (MD5, CRYPT-DES, SHA, LM, KRB5, …) for all services who need it. All request for changing password are redirected to this daemon who update all hashes “in-the-fly”. Same thing for authentication

By: dean

dean — Fri, 29 Jul 2011 21:52:04 +0000

Potentially, it can work. if there is another authentication directory other than “files” (/etc/passwd) specified in nsswitch, it can get the user info from that authentication directory, and the password info from /etc/shadow

By: jocurds

jocurds — Sun, 26 Jun 2011 09:36:18 +0000

by the way this is for solaris 8.

By: jocurds

jocurds — Sun, 26 Jun 2011 09:34:14 +0000

for etc/shadow file for user accounts with ‘NP’ (no password) also means that the account is disabled? kindly advise.

By: Scott

Scott — Sun, 26 Jun 2011 04:35:15 +0000

PS: The first dollar sign signifies the hashing algorithm:

$1 – md5
$2a – blowfish
$6 – sha-512

Most modern linux distros use $6 in /etc/shadow for user accounts

By: gregory

gregory — Fri, 03 Jun 2011 19:22:22 +0000

I’m trying to unshadow my passwd file on mac os x 10.6.7 (MBP if it helps) I can’t seem to locate the shadow file in etc/ can you help me? I’m trying to do this for use with john the ripper to test the passwords on my server, and I am new to john the ripper.

By: realmoonstruck

realmoonstruck — Fri, 06 May 2011 09:17:56 +0000

you can always try john the ripper to crack the hash