setting users passwords in batch

[Klaas D. Eenkhoorn]

All,

How can i set, in batch, the password of a user ? (aprox. 300 accounts)
Probably there will be a existing thread about this subject but i can't find it.

Can somone help ?

Kl@@s

[Pete Randall · Accepted solution]

Klaas,

Here's one:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=25941


Pete

[Oliver Charni]

Hi!

Im not 100% sure but I think you cant set password in batchmode. What we are doing is we use sed to modify the /etc/passwd File with pregenerated hashes.

[Massimo Bianchi]

One way could be to write a script to be run as root, like the following.

I assume in the file list.txt there are entry in the form:

user1 password1
user2 password2

and so on..


########SCRIPT##############

while read USER PASSWORD
do

passwd $USER << EOF
$PASSWORD
$PASSWORD
EOF
done < list.txt

########END###################

HTH,
Massimo

[Pete Randall]

Klaas,

Here's a bunch of threads on the topic:

http://us-support3.external.hp.com/emse/bin/doc.pl/sid=8ea14c8c0f09f61443?todo=search&searchtext=password+change+script&x=37&y=13&searchcriteria=allwords&searchtype=SEARCH_FORUMS&searchcategory=ALL&rn=25&presort=rank


Pete

[John Carr_2]

Hi

I dont have my script to hand but i can explain how i did this.

I changed the pasword on account ourdefault then using grep took the encrypted password from the passwd file then using sed and awk applied it to a new passwd.new file and copied old password file to saved one and new one became real.

John.

[RAC_1]

You can use expect for that.

As crude method you can do as follows.

I assume you have list of these users in a file.

for i in `cat file`
do
/usr/sam/lbin/usermod.sam -p "" $i
done

-p option on usermod is password. In above case it will set null password for all users.


Now you can modify this script further.


for i in `cat file`
do
/usr/sam/lbin/usermod.sam -p "`echo $i|makekey" $i
done

[Stuart Urquhart]

Passwd does something funny with stdin so you can't use a here docuemnt so it's Expect or http://hpux.connect.org.uk/hppd/hpux/Sysadmin/npasswd-1.2.4/ says it can do it via a pipe.

[John Carr_2]

make sure you backup your passwd file before you do anything and have a session open as root when finished and test through another session. If you wreck the passwd file accidentally you cn live to regret it.

john.

[Klaas D. Eenkhoorn]

Okeee,
One lesson learned allready . . .
If you modify accounts by batch give the system time to change the password file.
If not, you suddenly miss userid's !!!!

Gone, zip , away !!! :`-(

So use sleep after every command.
And keep a copy of the password file . . .

Yes yes yes i did that !!!!

By the way the last option, using sam to change the password, worked fine for me.

Kl@@s

[Klaas D. Eenkhoorn]

Ps.

HERE document scripting does not work with passwd.
Tried it and failed . . .

Kl@@s