expr - evaluate expressions.
Add two numbers using the expr command:
expr 2 + 8
Subtract two numbers using the expr command:
expr 10 - 5
Multiply two numbers using the expr command:
expr 5 \* 7
Quotient of two numbers using the expr command:
expr 15 / 3
Remainder of two numbers using the expr command:
expr 11 % 3
Shows the length of a string:
expr length LinuxCommandsExamples