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How to remove spaces from string

 
Greenhorn
Posts: 24
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for example
a=" 58 "

how to remove the spaces from the above string?
 
Rancher
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use trim() of String class.
 
rama ilango
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What is the linux command to trim the string?
 
Ranch Hand
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http://www.unix.com/shell-programming-scripting/20022-trim-whitespace.html
 
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