09-29-2006
Quote:
Originally Posted by thestevew
To do what you want you would need to embed your password in a script in plain text - not good for security!
You could embed only the encrypted portion of the password and use sed to update /etc/shadow.
nathan - the "--stdin" option is not universial.
10 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
Hi,
I have a shell script in which I need to switch user and execute some commands and then come back to the original user. To make it more clear -
I have to log in as user xxx (this user is not root)- then 'su' to yyy - execute a script called zzz - then logout to xxx.
The problem I am... (2 Replies)
Discussion started by: unique
2 Replies
2. Shell Programming and Scripting
I had to write a script to change my login password, and the script wasnt working fine. When I searched through the previous postings in this forum, I got the solution (using 'expect' tool).
But I would like to know why passwd command isnt working in scripts? (1 Reply)
Discussion started by: Deepa
1 Replies
3. Shell Programming and Scripting
Hello *nix users,
I'm wondering if there's a way to change a user's default shell in /etc/passwd to the telnet program along with some parameters.
For instance:
user:x:1001:1001::/home/user:/usr/bin/telnet localhost 12345
The above line in the /etc/passwd file gives the following error... (2 Replies)
Discussion started by: tux0084
2 Replies
4. Red Hat
I accidentally changed root shell from /bin/bash to bash in /etc/password, then logged out from root. Now I can't login as root and got "No shell" error, although I have root password. "su -f -s /bin/bash" command does NOT work. There is no GUI interface for this system.
My question: Do I have... (7 Replies)
Discussion started by: aixlover
7 Replies
5. Solaris
Hi Folks,
I have Solaris 10, latest release.
We have passwd aging set in /etc/defalut/passwd.
I have an account that passwd should never expire. Acheived by emptying associated users shadow file entries for passwd aging.
When I reset the users passwd using passwd command, it re enables... (3 Replies)
Discussion started by: BG_JrAdmin
3 Replies
6. Shell Programming and Scripting
Hi All,
I wanted to write a shell script which will change the expired passwd in oracle. Here is below what I am trying,
#!/bin/sh
set -x
ORACLE_HOME="/optware/oracle/9.2.0.2_64"
SQLPLUS="${ORACLE_HOME}/bin/sqlplus"
PASS="xyz"
PATH=$ORACLE_HOME/bin:$PATH... (0 Replies)
Discussion started by: gr8_usk
0 Replies
7. AIX
Does anyone know when AIX started using /etc/security/passwd instead of /etc/passwd to store encrypted passwords? (1 Reply)
Discussion started by: Anne Neville
1 Replies
8. Shell Programming and Scripting
Hi,
i have one shell script which transfers files from one server to other server through FTP, but i can see login id and password is not mentioned.
kindly help to understand the script.then how below script is working if login and password is not mentioned in script
#!/bin/sh... (1 Reply)
Discussion started by: ni3b007
1 Replies
9. Shell Programming and Scripting
Hi All, Wishes!!
I need some help to prepare a script to copy the public key from admin host to multiple client hosts to make them login without password.
Detailed :
I have an admin host "admin1" and i generated sshkeygen, now i have id_rsa.pub and i have around 50 client hosts. i... (4 Replies)
Discussion started by: kumar85shiv
4 Replies
10. UNIX for Advanced & Expert Users
did a big mistake, changing root entry of /etc/passwd to
root:x:0:0:root:/root:/usr/bin/tmux split-window -v \; attach
as expected, now I can't login as root anymore. sudo ed /etc/passwd etc. doesn't work.
Any idea?
Use code tags to increase readability and follow the rules. (4 Replies)
Discussion started by: dodona
4 Replies
LEARN ABOUT REDHAT
shadow
SHADOW(5) File Formats Manual SHADOW(5)
NAME
shadow - encrypted password file
DESCRIPTION
shadow contains the encrypted password information for user's accounts and optional the password aging information. Included is
Login name
Encrypted password
Days since Jan 1, 1970 that password was last changed
Days before password may be changed
Days after which password must be changed
Days before password is to expire that user is warned
Days after password expires that account is disabled
Days since Jan 1, 1970 that account is disabled
A reserved field
The password field must be filled. The encryped password consists of 13 to 24 characters from the 64 character alphabet a thru z, A thru
Z, 0 thru 9, . and /. Refer to crypt(3) for details on how this string is interpreted.
The date of the last password change is given as the number of days since Jan 1, 1970. The password may not be changed again until the
proper number of days have passed, and must be changed after the maximum number of days. If the minimum number of days required is greater
than the maximum number of day allowed, this password may not be changed by the user.
An account is considered to be inactive and is disabled if the password is not changed within the specified number of days after the pass-
word expires. An account will also be disabled on the specified day regardless of other password expiration information.
This information supercedes any password or password age information present in /etc/passwd.
This file must not be readable by regular users if password security is to be maintained.
FILES
/etc/passwd - user account information
/etc/shadow - encrypted user passwords
SEE ALSO
chage(1), login(1), passwd(1), su(1), passwd(5), pwconv(8), pwunconv(8), sulogin(8)
AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com)
SHADOW(5)