find and replace

[tropicalisland]

Hi,

I have this shadow file in a chroot environment.

nobody:NP:6445::::::
noaccess:NP:6445::::::
nobody4:NP:6445::::::
test:eO6/aEEFF$8LA:12249::::::
nobody2:NP:6445::::::
noaccess2:NP:6445::::::

I would like to write a script to find and replace the shadow password where it matches a name. For example, If the script finds the user "test", it will replace the shadow password "eO6/aEEFF$8LA" with a new password.

I am new to scripting. I appreciate any help.

 

[PHV]

Which sort of *nix ?
Have you a

 passwd

command ?

Hope This Help
PH.

 

[tropicalisland]

on Solaris
I can use the passwd command; but this shadow file is not the same one in /etc/shadow. This shadow file is for use in proftpd.

Thanks,

 

[PHV]

Try this:

user="test"; newpass="TheNewEncryptedPassword"
sed -e &quot;/^$user:/s!^$user:[^:]*:!$user:$newpass:!&quot; <path/to/shadow >path/to/shadow.tmp && mv path/to/shadow.tmp path/to/shadow

Hope This Help
PH.

 

[tropicalisland]

Solaris Sparc

The shadow file is for used with proftpd. It is not the same file in /etc/shadow.

Thanks

 

[tropicalisland]

Thank you for your help