Shell script won't recognize heredoc delimiter

Question

I am trying to write a very simple shell script in Linux. The Scenario I am trying to achieve is:

Creating an user account and giving it a password internally (No interaction with user allowed for this). Once successful, Just display a success message to the user. None of the rest should be diplayed.

On RHEL this turned out to be pretty simple as passwd command accepts the --stdin option which helped me pass the input via Pipe. And I redirected the standard output in a log file. [Not sharing that code as it's tad simple and explained multiple times here for different question on StackExcahnge.]

However, Ubuntu is not accepting the --stdin option for passwd hence I had to use the below method:

#!/bin/bash
useradd -m demo &>path/to/logfile.log
passwd demo &>>path/to/logfile.log << EOF
myPasswd
myPasswd
EOF
echo "User demo successfully added to the system."

Now The problem here is my output does not print the echo statement and also displays a warning:

root@ubuntu:~# ./usercreate.sh 
./usercreate.sh: line 8: warning: here-document at line 3 delimited by end-of-file (wanted `EOF')
root@ubuntu:~# 

instead of my expected one:

root@ubuntu:~# ./usercreate.sh 
User demo successfully added to the system.
root@ubuntu:~# 

Please help me with these two things:

1. Is there a way to suppress that warning for this script only?
2. Why is it not printing my echo statement and how can I print it?

PS: Another way or idea to write this script is also welcome

Thanks

Answer 1

When using HEREDOC notation, you must write the closing word (EOF in your case) in a line by itself, without any leading or trailing whitespace.

But in this case I would use another approach:

You can use chpasswd. This command is shipped in all linux distros (that I know of) and I think in UNIX variants too.

The usage is pretty simple, you just pass via the STDIN a username:password combination and that's all, one combo per line. To change the password for a single user, just do a simple echo:

echo "demo:myPasswd" | chpasswd