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expr:tldr:668e2
expr: Get the first expression if both expressions are non-zero and not null otherwise get zero.
$ expr ${expression1} \& ${expression2}
try on your machine
The command "expr ${expression1} \& ${expression2}" is a Unix/Linux command used for performing bitwise AND operation between two expressions or variables.
Here's the breakdown:
- "expr" is the command used for evaluating expressions and performing various operations.
- "${expression1}" and "${expression2}" are placeholders for the expressions or variables whose bitwise AND operation needs to be performed.
- The backslash "\" before the ampersand "&" is used to escape the special meaning of the ampersand character and treat it as a literal character.
- The ampersand "&" represents the bitwise AND operator.
When this command is executed, it will evaluate the given expressions or variables and perform a bitwise AND operation on their corresponding bits. The result will be printed as an output of the command.
For example, if expression1 is 5 (binary representation: 101) and expression2 is 3 (binary representation: 011), the bitwise AND operation would be: 101 & 011
001
Therefore, the output of the command would be "1" (binary representation: 001).
This explanation was created by an AI. In most cases those are correct. But please always be careful and
never run a command you are not sure if it is safe.