Declaring User Defined Variable in Shell Scripting (csh shell)

Question

I am trying to learn shell scripting and trying to create a user defined variable within the script, first:

howdy="Hello $USER !"
echo $howdy

However, when I execute the script (./first) I get this:

howdy=Hello aaron!: Command not found.
howdy: Undefined variable.

What am I doing wrong?

Here's an indication how much it matters: Csh Programming Considered Harmful. — Dennis Williamson
– Dennis Williamson, Commented Sep 28, 2010 at 15:25

andcoz · Accepted Answer · 2016-08-19 13:04:27Z

13

You have two errors in you code:

Try this:

#!/bin/csh

set howdy="Hello $USER \!"
echo $howdy

answered Sep 28, 2010 at 15:15

andcoz

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Comments

Aaron Digulla · Accepted Answer · 2010-09-28 15:06:24Z

1

csh expects that you set variables. Try

set howdy="Hello $USER"
echo $howdy

answered Sep 28, 2010 at 15:06

Aaron Digulla

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codaddict · Accepted Answer · 2010-09-28 15:07:39Z

0

You are doing

howdy=''Hello $USER !''

You need to enclose the string in double quotes as:

howdy="Hello $USER !"

You seem to be using two single quotes in place of a double quote.

answered Sep 28, 2010 at 15:07

codaddict

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That was typo when putting it into stack overflow, sorry