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BASH - Clearing value in a variable

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# 1  
Old 11-08-2011
BASH - Clearing value in a variable
anyone has any idae how do i clear the value in a variable in BASH?

So far I come across "Clear-variable", however it can only clear a "Local" and "Global" variable. I'm trying to clear a self-declared variable.

Anyone has any suggestions?
# 2  
Old 11-08-2011
Code:
$ a="1234"
$ echo $a
1234
$ unset a
$ echo $a
 
$

# 3  
Old 11-08-2011
Thanks jay!
# 4  
Old 11-08-2011
You can set it to empty
Code:
a="1234"
$echo $a
1234
$ a=
$ echo $a
 
$

# 5  
Old 11-08-2011
Thanks for all your response!

But can i check with you guys, is it possible to clear the value in a 2d array with 2 variables as its value? E.g.
Code:
${a[$j$i]}

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