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Shell Programming and Scripting

Variable Referencing

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# 1  
Old 08-05-2010
Variable Referencing
I am referencing variables in the following way

Code:
var1="greeting"
greeting="Welcome!"

How do I echo var1 in such a way that it outputs Welcome! ?
# 2  
Old 08-05-2010
Code:
$ eval echo \$$var1
Welcome!

# 3  
Old 08-05-2010
use single quotes
Code:
$ var1="greeting"
$ greeting='Welcome!'
$ echo ${!var1}
Welcome!

# 4  
Old 08-05-2010
Note that the example by Frans only works in the Bash shell.
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