Needs to develop a script which will automate password change

[vijith_g1]

Hi,

In my current project I must develop a script which will automate changing password. Manually I cannot enter the password. The script has to provide the password. When I checked the passwd command option I could not find --stdin option. Please let me know any solution for this

echo "Password \password"| passwd --stdin root

did not work

reason  

1: --stdin option not available.

2: echo not putting the "Password" in new password: option

Thanks & Regards

Vijith G

[jimmychan]

Sorry, I don't understand your question. Could you tell me more details about it? Where to use the script to change the password?

[vijith_g1]

My responsibility to develop a installation script. As part of the script I have to configure password for root user.This password configuration should be automated. Password should not enter manually.

So i tried some command configuration . And I found that in yocto linux for the command passwd does not having --stdin option.

I am looking for some other options by new commands or modifying /etc/shadow file.