Visit Our UNIX and Linux User Community

Password Recovery From /etc/shadow file

Thread Tools Search this Thread
Operating Systems Solaris Password Recovery From /etc/shadow file
# 1  
Old 09-26-2009
Password Recovery From /etc/shadow file

Is it possible to reset a normal user password , by editing password field in /etc/shadow file?

# 2  
Old 09-26-2009
there is no need to edit the file directly. use the passwd command
# 3  
Old 09-26-2009
What i mean is, whether we will be able to reset the password as blank by clearing the password field in /etc/shadow file?Situation in which we forgot the user login password.

# 4  
Old 09-26-2009
see the man page for passwd. you can do everything that your asking using the passwd command and without having to directly edit /etc/shadow. see the -d and -f option.
# 5  
Old 09-26-2009
Thanks Frank.:-)
# 6  
Old 09-26-2009
technically yes... you can edit the file and it will clear out the password.
# 7  
Old 09-27-2009
After clearing the encrypted passwd in the shadow file, you can do
#passwd -f <userID>
to force the user to set the password in the next login

Previous Thread | Next Thread
Test Your Knowledge in Computers #904
Difficulty: Medium
The benchmark used in the LINPACK Benchmark is to solve a dense system of nonlinear equations.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Using the encrypted password of the shadow file

i have an application that uses the encrypted password that's in the /etc/shadow file. i copied the line for the particular username i was interested it in from shadow file and i pasted it into the password file of the application. the application is nagios. this application allowed that... (5 Replies)
Discussion started by: SkySmart
5 Replies

2. Shell Programming and Scripting

how to remove the non : characters after the password in shadow file?

On SPARC Solaris 10. I set the app account so it's expired. I also want it so not required to change password at first login, I can do this by removing the numbers after the password in /etc/shadow. example using user1 The /etc/shadow file looks like this: user1:kOmcVXAImRTAY:0::::90:: ... (8 Replies)
Discussion started by: TKD
8 Replies

3. Shell Programming and Scripting

Users who have never changed their password from /etc/shadow.

Hello, I have to do a script which returns users who have never changed their password from /etc/shadow. Here is what have I done and I'm not sure if it's ok. I tried to return just users who doesn;t have password set or are locked. Can be there other kind of user who never changed the... (3 Replies)
Discussion started by: catalint
3 Replies

4. Red Hat

Shadow file password policy

Today i was going through some of security guides written on linux . Under shadow file security following points were mentioned. 1)The encrypted password stored under /etc/shadow file should have more than 14-25 characters. 2)Usernames in shadow file must satisfy to all the same rules as... (14 Replies)
Discussion started by: pinga123
14 Replies

5. UNIX for Advanced & Expert Users

/etc/shadow encrypted password

Hi I wonder whether is possible to generate enrypted passwd for some user and paste it into /etc/shadow file ? What kind of encryption is used in /etc/shadow file ? ths for help. (1 Reply)
Discussion started by: presul
1 Replies

6. Solaris

hash password in shadow show 'x' ???

Hello, I want to know the reason behing the scene why some systems have hashed password in /etc/shadow file as "x" not the alienoid language like A1Dksxi3kaA.. (13 characters) As far as I understand, etc/password will show password as "x" and move all hashed password to etc/shadow.... (8 Replies)
Discussion started by: Smith
8 Replies

7. Linux

Interpreting the encrypted shadow password?

We are currently using a script to copy the same encrypted password between our HP-UX and Solaris servers editing the trusted and shadow files directly. The encrypted password is only 13 characters long on both servers and decrypts the same way. Is there a way to copy this same string to Linux... (5 Replies)
Discussion started by: keelba
5 Replies

8. UNIX for Dummies Questions & Answers

shadow file after a password reset

hi, I had to reset a lost root password by editing the /etc/passwd and /etc/shadow files ( this is a xen vm file, so i mounted and chrooted the file ) after the reboot with an empty password on root , i have set a new password with passwd but it only changed the /etc/passwd file.... (0 Replies)
Discussion started by: progressdll
0 Replies

9. Shell Programming and Scripting

I want to append password in /etc/shadow file

Hi, I want to append password into /etc/shadow file using a shell script. My below script does add the users to both /etc/passwd and /etc/shadow but how can I add the hordcoded passwords to /etc/shadow file can some one help me ? # To add the groups into /etc/group file for a_user... (5 Replies)
Discussion started by: modgil
5 Replies

10. UNIX for Dummies Questions & Answers

remove shadow password

Does anyone know how to remove a stanza in the shadow password file if the user account has already been removed on an AIX box? I know it can be done by editing the file itself but I would prefer not to do it that way. cheers gizaa (2 Replies)
Discussion started by: gizaa
2 Replies

Featured Tech Videos