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Students must use and complete the template provided. If you do not use the template your post may be deleted! Special homework rules apply here.

Simple loop to mail all active users.

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# 8  
Old 11-09-2016
You havent been searching much, in less than 15 seconds I got this:
Command substitution - Linux Shell Scripting Tutorial - A Beginner's handbook

But many more exist out there...
That said this link should solve all your issues...
# 9  
Old 11-09-2016
man bash and search for command substitution.

Command Substitution
Command substitution allows the output of a command to be substituted in place of the command name itself. Command substitution occurs when the command is enclosed as follows:
or (“backquoted” version):

It's been around in sh already, so it MUST be there. What shell and version do you use?
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