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linux shell test expression (integer)

2011-07-08 10:34 162 查看
linux shell test expression (integer)
-eq is equal to-ne is not equal to-gt is greater than-ge is greater than or equal to-lt is less than-le is less than or equal to< is less than (within double parenthese) (($a < $b))<= is less than or equal to> is greater than>= is greater than or equal to-z string is null, that is, has zero length-n string is not null
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