bitwise operator

基本解釋

Bitwise-or adds bits to the resulting expression, whereas bitwise-and selects only those bits in common between its two operators.
按位或向結(jié)果表達(dá)式添加位，而按位與只選擇兩個運算符之間相同的位。
The shell doesn't have a large collection of arithmetic operators, but it's sufficient for most programming tasks, including bitwise shifts, remainders, and comparisons.
Shell 并沒有提供大量的算術(shù)操作符，但是已經(jīng)足以完成大多數(shù)編程任務(wù)，包括移位、求余和比較。
The arithmetic and concatenation operators have the order of precedence described in the following section, and all have greater precedence than the comparison, logical, and bitwise operators.
算術(shù)和串連運算子優(yōu)先順序如下節(jié)所述，其優(yōu)先順序都高于比較運算子、邏輯運算子和位元運算子。