how to change passwd by script

[dongming]

Hello
i need to write a script to change passwd for a user on all servers. can i use passwd << EOF to change passwd by scripts.
thanks

[Patrick Wallek]

Nope, that won't work.

See this thread for more discussion on this subject:
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=942471

[Mel Burslan]

if you have a burning desire to scriptize it, you need help from something like expect. You can find expect at:

http://hpux.cs.utah.edu/hppd/hpux/Tcl/expect-5.43/

in depot format for 11.11 and 11.23 versions as well as its source code for you to compile.

Then you need to peek at the man pages to figure out how to use it for your purpose.

[Alan Meyer_4]

I did this once and am trying to remember how... I think I had to do it in perl and had to get a special module installed to handle it... It'll take me a while to research it though...

[Alan Meyer_4]

I think it was Unix::PasswdFile

CPAN link is here
http://search.cpan.org/~ssnodgra/Unix-ConfigFile-0.06/PasswdFile.pm

[Devesh Pant_1]

dongming,
expect is the way to go. You can download expect and try various expect scripting ideas

thanks
devesh

[Amit Agarwal_1 · Accepted solution]

There is a restricted command
/usr/sam/lbin/usermod.sam that can achieve this. The option for passwd change is -p, but i don't remember the exact syntax.

I don't have a HP-UX box right now to verify it, but from my memory it should be
usermod.sam -p

Please note that this is internal command and no official support can be claimed.

[dongming]

thanks a lot for help.
i just check usermod.sam it is link to usermod which is used for change uid gid hoe dir and so on , not for passwd.
i remember we can just copy and paste on the passwd field in passwd file.

[Mel Burslan]

usermod.sam -p works for changing encrypted password field. The new password provided on the command line can not be clear text password. It needs to be encrypted first.