UNIX for Dummies Questions & Answers

Since a few weeks I am playing with debian and now I have 2 questions.

The first one:

I want to create weekly a file to all user directories.
I know that you have a cronjob to schedule it weekly. In this cronjob I have written the following line:

df >> /home/%users/diskspace.txt

I've tried this first in the shell, but it won't put the outcome to all other home directories. How can I realize that this file is created in each home directory?


Second question is, how can I give all users of member group such as "family" a nice welcome message?

I've tried google for both but it doesn't make sense for me.


Thanks.
Icy

For first question ..

Code:

$ for user in $(cut -d: -f1 < /etc/passwd); do df > /home/$user/diskspace.txt ; done

But you must be a root or a superior user to all these users to create file in their homepath ..

For second question, use wall command to broadcast your message to all users in particular group with -g option.