Bash Assignment

Bash Assignment-5
(Bash does not support floating-point arithmetic.) No overflow checking is performed, so operations on very large integers may produce an unexpected result, without causing an error.Division by zero is detected, however, and causes an error.

(Bash does not support floating-point arithmetic.) No overflow checking is performed, so operations on very large integers may produce an unexpected result, without causing an error.Division by zero is detected, however, and causes an error.

The exception is whenever let evaluates an expression that explicitly sets a variable's value.

In that case, that variable's value persists in the current shell.

)), which is a compound command, let is a builtin command.

As such, its individual arguments are subject to expansion by bash.

Bitwise negation flips the bits in the binary representation of the numeric operand. The corresponding binary digits of both operands are multiplied to produce a result; for any given digit, the resulting digit is 1 if and only if the corresponding digit in both operands is also 1. A binary digit of the result is 1 if and only if the corresponding digits of the operands differ.

For instance, if the first binary digit of the first operand is 1, and the first digit of the second operand is 0, the first digit of the result is 1. Assign the value of the expression that follows the operator, to the variable that precedes it.

-g create global variables when used in a shell function; otherwise ignored -l to convert NAMEs to lower case on assignment -n make NAME a reference to the variable named by its value -r to make NAMEs readonly -t to make NAMEs have the `trace' attribute -u to convert NAMEs to upper case on assignment -x to make NAMEs export Using ` ' instead of `-' turns off the given attribute.

Variables with the integer attribute have arithmetic evaluation (see the `let' command) performed when the variable is assigned a value.

When evaluating an expression, let interprets the following mathematical operators, and performs the corresponding operation.

In the table below, operators are listed row-by-row in order of decreasing precedence.

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