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Shell Programming and Scripting

Assign Here Document Facility to a Variable

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# 1  
Old 05-05-2013
Assign Here Document Facility to a Variable
Hello All,

I was wondering how I can assign a here document facility to a variable. I have tried the following:

Code:
menu=$(<<MENU
Option1
Option2
Option3
Option4
MENU
)

...but when I echo the $menu variable, the multiline list comes out in a single line such as:
Code:
Option1 Option2 Option3 Option4

How can I have it maintain the multiline list such as the following?:
Code:
Option1
Option2
Option3
Option4

Thanx
Last edited by Scrutinizer; 05-05-2013 at 11:03 AM.. Reason: code tags
# 2  
Old 05-05-2013
You should use:
Code:
menu=$(cat <<MENU...

But in this case you could just do:
Code:
menu="Option1
Option2
Option3
Option4"

When printing the content, don't forget to quote the variable to prevent field splitting:
Code:
$ printf "%s\n" "$menu"
Option1
Option2
Option3
Option4

Last edited by Scrutinizer; 05-05-2013 at 12:37 PM..
# 3  
Old 05-05-2013
Thanx for the response, I tried the suggested $(cat <<MENU... but that made no difference and the other option does not provide the needed solution. I am really hoping that the here document has a tweak for this.
# 4  
Old 05-05-2013
Did you read the rest of my post?
# 5  
Old 05-05-2013
Yes, I read it, which is what I responded to when I said it wasn't what I was looking for and really need to get the here document to work.
# 6  
Old 05-05-2013
And did you try the very last bit about how to print a variable?
# 7  
Old 05-07-2013
Quote:
Originally Posted by Scrutinizer
And did you try the very last bit about how to print a variable?
It displays the options and I am able to center it but just not left justified as can be accomplished with Here document.

---------- Post updated 05-07-13 at 12:00 AM ---------- Previous update was 05-06-13 at 05:25 PM ----------

Quote:
Originally Posted by techieg
It displays the options and I am able to center it but just not left justified as can be accomplished with Here document.
I stand corrected, it works just fine. I appreciate it.
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