Friday, June 22, 2007
Double brackets for arithmetic operation
Suppose we have to increment the value of a variable
Normal way:
$ a=10; a=`expr $a + 2` ; echo $a
12
Can also be done this way:
$ a=10; ((a=a+2)); echo $a
12
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1 comment:
Or even:
a=10; ((a+=2)); echo $a
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