Hi all
Im trying to learn the basics of bash and am struggling with some file manipulation. I am trying to run a script that once you have logged in allows you to change your password which is held (along with the corresponding username) in a different file called usernames. When i try to run my code the logon part runs fine, but the change of password is not stored. Any advice would be greatly appreciated.
Thanks
The file I am using looks like this:
---------- Post updated at 02:21 PM ---------- Previous update was at 01:29 PM ----------
Ok, is there anyway of using a sed command to change the contents of a file, as I have found that whilst my sed command changes the value on the command screen but not in the file. Is it possible to alter the value in the file?
First off, i think you are reinventing the wheel. Have a look at the passwd command, which does what you want already in a much better way than you could ever dream of in some shell script.
Quote:
Originally Posted by somersetdan
This will never work, because inside single quotes variables are not becoming expanded. You are searching for a literal "$pin" instead of the contents of the variable "pin".
To write sed output to a file just redirect its output to it. If you want to overwrite your old file move the output over the input afterwards (reasons explained):
This is very insecure and shouldn't be used to protect anything.
Use read -s npass to avoid echo of entered password, prompt twice and compare two values.
Don't seearch and replace on password in case two users have the same password.
If you have openssl installed you might want to encrypt the password after entry so it's a little safer from casual observation in your password file:
Store the encrypted value and reencrypt any entered password to compare.
---------- Post updated at 08:54 AM ---------- Previous update was at 07:35 AM ----------
I want to change the root password on an AIX box. What is the best method to do this so i do not get myself locked out. When I do i search the results come up for resetting the password if you are locked out.
Thanks (5 Replies)
Is there any way I can change the prompt which asks for the password on a UNIX system? e.g. When I login using Telnet instead of "Password" I should get "Correct Password".
Thanks,
Vineet (3 Replies)
i created 1 user . Now its passwd time period get expired.
Now how can I set password for that user. Also how can I set a condition such a way that after every 3 months user must change his passwd. (5 Replies)
Hi all,
I'm having an issue resetting an Linux user password. As root, I type 'passwd <username>, enter the new password, but the user is still Access Denied. Can someone assist me in figuring this one out?
The box is running "Linux trm62 2.4.21-15.ELsmp #1 SMP Thu Apr 22 00:18:24 EDT 2004... (6 Replies)
Friends
I want to know whether i can change the password of a user logged in thru NIS from a client machine after stopping the YP services in NIS server.
Note - The Slave server is up and running.
I tried doing this. But i got the reply "Permission Denied".
I stopped the YP services in... (7 Replies)
I have two unix system A and B with same configuration.
I can use remsh from A system login to B system as root, but when I want to change the root password of B system, it ask me the old password, but i forgot it.
However, is it possible to change the B system root password? :(
Thanks a lot (3 Replies)
I have 02 servers:
- Linux RHEL AS 3 (server1)
- AIX 5.2 (server2)
Running the command rsh server2 passwd derje from the server1 to change derje user password on server2, give me this error:
3004-709 Error while changing the password for "derje"
Can somebody help me ? (0 Replies)
Hello
im trying to change the user password with passwd
but when I enter the password it gives me this msg:
passwd: Password too short - must be at least 6 characters.
BUT the thing is that the initial password was 4 letters why now it asking for 6 ?
tnx (2 Replies)
Hi
Someone logged on the system with a Normal user and changed the password , for this user , how can i know ? who changed the password from which terminal ?
regards
Georges (5 Replies)
SCO OpenServer 5.05
Has anyone ever received this error when attempting to
change/assign a user password?
#ypasswd
=======================================
yppasswd: (host name) is not running yppasswd daemon
Password request denied.
Reason: Remote password change request denied.... (2 Replies)