/bin/bash #Declare bash string variable BASH_VAR="Bash Script" # echo variable BASH_VAR echo $BASH_VAR #when meta character such us "$" is escaped with "\" it will be read literally echo \$BASH_VAR # backslash
Finally test the "add()" function by calling it with two numbers and storing the result in a variable 'result'. 2. Subtraction Function: Write a Bash script that defines a function called subtract which takes two numbers as arguments and returns their difference. This problem involves writing ...
+,-addition,subtraction <<,>>leftandright bitwise shifts <=,>=,<,>comparison ==,!=equality,inequality &bitwise AND ^bitwise XOR |bitwise OR &&logical AND ||logical OR expr?expr:expr conditionaloperator =,*=,/=,%=, +=,-=,<<=,>>=, &=,^=,|=assignment Shellvariables are allowedas...
, ~logical and bitwise negation**exponentiation*, /, %multiplication, division, remainder+, -addition, subtraction<<, >>left and right bitwise shifts<=, >=, <, >comparison==, !=equality, inequality&bitwise AND^bitwise XOR|bitwise OR&&logical AND||logical ORexpr?expr:exprconditional operator=...
produces a result. The arithmetic operators that you’re already familiar with for addition (+), subtraction (-), and multiplication (*) work like you would expect them to. Notice that when doing multiplication you need to escape the star character, otherwise Bash thinks you’re trying to cr...
Bash does not support floating points (decimals). You'll have to use other commands likebcto deal with them. Addition and subtraction in bash Let's see it by writing a script that takes two numbers from the user and then prints their sum and subtraction. ...
Subtraction Function: Write a Bash script that defines a function called subtract that takes two numbers as arguments and prints their difference. Code: #!/bin/bash # Define the subtract function subtract() { local num1=$1 local num2=$2 ...
Subtraction=2 Multiplication=120 Division=1 In the above output $1 has the value 12, and $2 has 10. Shell builtin ‘let’ allows arithmetic operation to be performed on shell variables. The above script does the arithmetic operations such as addition, subtraction, multiplication and division on...
does not recognize time as a reserved word if the next token begins with a `-'. The TIME‐ FORMAT variable may be set to a format string that specifies how the timing information should be displayed; see the description of TIMEFORMAT under Shell Variables below. ...
$ echo "! 0" | bc 1 Here,0is zero, so the logical NOT operator!returns 1. Mathematical Functions A math library is preloaded and the default scale has been configured if bc is run with the-l option. The scale set at the time of its call is used by the math functions to calculat...