Funciones en Bash

Funciones en Bash

Autor: Alexander Arias

Fecha: 22/05/2022

#!/bin/bash
echo "---------------------------------"
echo "Funciones"
echo "---------------------------------"
echo "function to add two numbers"
echo "---------------------------------"
#function to add two numbers
add(){
x=$1
y=$2
echo -e "Number entered by u are: $x and $y"
echo "sum of $1 and $2 is `expr $x + $y` "
}
# main script
echo "enter first number"
read first
echo "enter second number"
read sec
#calling function
add $first $sec

echo "---------------------------------"
echo "Another Function to add two numbers"
echo "---------------------------------"

suma(){
a=$1
b=$2
c=$(($a+$b))
echo "la suma de $a + $b es $c"
}
suma 10 20

echo "---------------------------------"
echo "Function to add two numbers and return value"
echo "---------------------------------"

suma1(){
a=$1
b=$2
c=$(($a+$b))
#echo "la suma de $a + $b es $c"
return $c
}
#Llamar la funcion
suma1 10 20
#El valor de la ejecución se guarda en $?
#lo guardo en d
d=$?
echo $d
echo "---------------------------------"
echo "end of the script"

El eresultado de Ejecución es:

 bash main.sh
---------------------------------
Funciones
---------------------------------
function to add two numbers
---------------------------------
enter first number
5
enter second number
6
Number entered by u are: 5 and 6
sum of 5 and 6 is 11 
---------------------------------
Another Function to add two numbers
---------------------------------
la suma de 10 + 20 es 30
---------------------------------
Function to add two numbers and return value
---------------------------------
30
---------------------------------
end of the script
