shell theorem definition

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The shell variable definition uses

Tags: type dash dir definition variable readonlypre Environment Variables Operations Several types of variables in the Shell: 1, local variables: variables available only in the current shell, 2, Environment variables: variables available for the current Shell's child processes 3, Shell variables: some

Shell Array Definition and acquisition

Shell ArrayBash supports one-dimensional arrays (which do not support multidimensional arrays) and does not limit the size of arrays.Similar to the C language, the subscript of an array element is numbered starting with 0. Gets the elements in the array to take advantage of subscript, the subscript can be an integer or an arithmetic expression whose value should be greater than or equal to 0.Defining arraysIn the

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