user wrote:
> /bin/sh script.
>
> Need to change a users password within the script based
on a file of
> user/pass I am feeding the script.
>
> Easy.
>
> Except the passwd command does not seem to be able to
take a password as
> an argument - I don't think that the passwd command can
run
> non-interactively.
>
> So how is this done ? It looks like the adduser script
does it
> non-interactively somehow ... but I don't see how.
>
> Thanks.
>
Yes, you can do this:
-h fd This option provides a special interface
by which
interac-
tive scripts can set an account password
using pw.
Because
the command line and environment are
fundamentally
insecure
mechanisms by which programs can accept
information, pw
will only allow setting of account and
group
passwords via
a file descriptor (usually a pipe between
an interactive
script and the program). sh, bash, ksh
and perl all pos-
sess mechanisms by which this can be
done.
Alternatively,
pw will prompt for the user's password if
-h 0 is given,
nominating stdin as the file descriptor
on which to read
the password. Note that this password
will be read only
once and is intended for use by a script
rather than for
interactive use. If you wish to have new
password
confir-
mation along the lines of passwd(1), this
must be imple-
mented as part of an interactive script
that calls pw.
If a value of `-' is given as the
argument fd, then the
password will be set to `*', rendering
the account
inacces-
sible via password-based login.
Read more in man 8 pw.
I'm also sure that there are examples out there as well
if you
search on Google, etc.
-Garrett
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