This is on an ESX 3.x.x box, but you've got a few options.
The first is to use the --stdin option to passwd, e.g.
This would require you storing the plain text password in your script. A *much* safer option is to add a user and set the password as you normally would to a standard value, e.g.
Now, you can use the encrypted password for this user when creating other accounts, so that all newly created accounts have the same password as "tmpuser", e.g.
Cheers,
ZB
Thanks for the reply. I would have replied back sooner, but haven't gotten a chance to try it out till now. I actually like the --stdin option. The script actually won't be holding a plain text password. What I would like to do is generate a random password in my script, and pass it to --stdin.
I just have one problem. I'm really new to Vmware ESX, but I was able to find a little script that generates a password. Here it is:
As you can see, all that script does is generate the password, and then echo it out. But I've never seen where you can just use "echo" and not tell it what to echo. So what variable is my password being stored in? If it's $index, then how can I use it with --stdin?
The problem comes when I try to use it, putting this in my code:
because the "echo" is also printing out the password, so do you know how I can use this to my advantage?
I would like to change the password requirements for all our AIX 5.2 logins but am having trouble finding a place where I can set the rules for everyone at the same time. I know I can go user by user in smit passwords but is there a way to create rules for everyone at the same time?
Thanks,... (2 Replies)
How can I know users have changed their passwords ? I don't need their password (!) I have to know if they have changed their pass word and when ?
Thank you in advance for any SIMPLE answer. (6 Replies)
As a system administrator. sometimes we see the users are trying some commands dangerous for the system health and remove them from their individual coomand history file.
How it is possible to enforce that the normal usres will will not be able to modify the history.
Thanks in advance.
Partha (4 Replies)
Ok, so here's my project I've been given and I know very little about this.
I have an AIX unix box that has over 2300 local users.
Any user with 4 or less characters in the username does not get changed.
Any user with 5 or more needs to have the attribute shell=/bin/ksh changed to... (1 Reply)
We have a server where we have a number of user ids and we also have the list of old passwords in a CSV file.
Now we want to change the password of all the users and assign them a default password.Can we write a shell script to do that.
I am planning to read the user name and corresponding... (7 Replies)
Hi there,
I'm working with a Linux server and now I can get a daily Logwatch mail ... my question is:since there are too many users with root password (...in my opinion... :mad:) how could I prevent to delete information about "su" log?
Thanks in advance,
GB (3 Replies)
I am on SunOS SolarisServer 5.11 11.1 i86pc i386 i86pc , I am trying to change password for a user,but I get the following message.I cannot find any google help on the matter.can anyone help?
root@SolarisServer:~# passwd
passwd: Changing password for stain
Please try again
Please try... (6 Replies)
Hello all,
I have a small C++ app for my solaris admins. I need to set it up so they can reset a users password. The admin does not have the old password. How can I reset a users password to a temp password either using passwd or PAM? I need to do this from within my C++ app. I have searched... (3 Replies)
Hi,
I want to exclude the users below 500 in the password file with the below script.
#!/bin/bash
# get date in dd-mm-yyyy format
NOW=$(date +"%d-%m-%Y")
exec > "/root/SYSINFO/User_details_`uname -n`_$NOW.txt"
cut -d: -f1 /etc/passwd > /tmp/pass.txt && for i in `cat /tmp/pass.txt`;... (2 Replies)
for UserName in `cat users` ; do useradd -d /u02 -s /usr/libexec/openssh/sftp-server -G ftp-users $UserName ;
PassWord=$( echo $( tr '' '' <<< ${UserName:0:1} )${UserName:1} ) ;
echo "$PassWord@123" | passwd $UserName --stdin ; done
can some one explain what the bold text do
Please use... (5 Replies)
Discussion started by: James0806
5 Replies
LEARN ABOUT REDHAT
adduser
USERADD(8) System Manager's Manual USERADD(8)NAME
useradd - Create a new user or update default new user information
SYNOPSIS
useradd [-c comment] [-d home_dir]
[-e expire_date] [-f inactive_time]
[-g initial_group] [-G group[,...]]
[-m [-k skeleton_dir] | -M] [-n] [-o] [-p passwd] [-r]
[-s shell] [-u uid] login
useradd -D [-g default_group] [-b default_home]
[-e default_expire_date] [-f default_inactive]
[-s default_shell]
DESCRIPTION
Creating New Users
When invoked without the -D option, the useradd command creates a new user account using the values specified on the command line and the
default values from the system. The new user account will be entered into the system files as needed, the home directory will be created,
and initial files copied, depending on the command line options. The version provided with Red Hat Linux will create a group for each user
added to the system, unless the -n option is given. The options which apply to the useradd command are:
-c comment
The new user's password file comment field.
-d home_dir
The new user will be created using home_dir as the value for the user's login directory. The default is to append the login name to
default_home and use that as the login directory name.
-e expire_date
The date on which the user account will be disabled. The date is specified in the format YYYY-MM-DD.
-f inactive_days
The number of days after a password expires until the account is permanently disabled. A value of 0 disables the account as soon as
the password has expired, and a value of -1 disables the feature. The default value is -1.
-g initial_group
The group name or number of the user's initial login group. The group name must exist. A group number must refer to an already
existing group. The default group number is 1 or whatever is specified in /etc/default/useradd.
-G group,[...]
A list of supplementary groups which the user is also a member of. Each group is separated from the next by a comma, with no inter-
vening whitespace. The groups are subject to the same restrictions as the group given with the -g option. The default is for the
user to belong only to the initial group.
-m The user's home directory will be created if it does not exist. The files contained in skeleton_dir will be copied to the home
directory if the -k option is used, otherwise the files contained in /etc/skel will be used instead. Any directories contained in
skeleton_dir or /etc/skel will be created in the user's home directory as well. The -k option is only valid in conjunction with the
-m option. The default is to not create the directory and to not copy any files.
-M The user home directory will not be created, even if the system wide settings from /etc/login.defs is to create home dirs.
-n A group having the same name as the user being added to the system will be created by default. This option will turn off this Red
Hat Linux specific behavior.
-o Allow create user with duplicate (non-unique) UID.
-p passwd
The encrypted password, as returned by crypt(3). The default is to disable the account.
-r This flag is used to create a system account. That is, a user with a UID lower than the value of UID_MIN defined in /etc/login.defs
and whose password does not expire. Note that useradd will not create a home directory for such an user, regardless of the default
setting in /etc/login.defs. You have to specify -m option if you want a home directory for a system account to be created. This is
an option added by Red Hat.
-s shell
The name of the user's login shell. The default is to leave this field blank, which causes the system to select the default login
shell.
-u uid The numerical value of the user's ID. This value must be unique, unless the -o option is used. The value must be non-negative.
The default is to use the smallest ID value greater than 99 and greater than every other user. Values between 0 and 99 are typi-
cally reserved for system accounts.
Changing the default values
When invoked with the -D option, useradd will either display the current default values, or update the default values from the command
line. The valid options are
-b default_home
The initial path prefix for a new user's home directory. The user's name will be affixed to the end of default_home to create the
new directory name if the -d option is not used when creating a new account.
-e default_expire_date
The date on which the user account is disabled.
-f default_inactive
The number of days after a password has expired before the account will be disabled.
-g default_group
The group name or ID for a new user's initial group. The named group must exist, and a numerical group ID must have an existing
entry .
-s default_shell
The name of the new user's login shell. The named program will be used for all future new user accounts.
If no options are specified, useradd displays the current default values.
NOTES
The system administrator is responsible for placing the default user files in the /etc/skel directory.
This version of useradd was modified by Red Hat to suit Red Hat user/group conventions.
CAVEATS
You may not add a user to an NIS group. This must be performed on the NIS server.
FILES
/etc/passwd - user account information
/etc/shadow - secure user account information
/etc/group - group information
/etc/gshadow - secure group information
/etc/default/useradd - default information
/etc/login.defs - system-wide settings
/etc/skel - directory containing default files
SEE ALSO chfn(1), chsh(1), passwd(1), crypt(3), groupadd(8), groupdel(8), groupmod(8), userdel(8), usermod(8)AUTHOR
Julianne Frances Haugh (jockgrrl@ix.netcom.com)
USERADD(8)