Adding Arrays

Addition Operations

break

case statement

Command Substitutions

continue

decimal

Deleting Arrays

Deleting substring

elif staement

Extracting substring

for loop list/range

for loops C-style

if ... else

loop an array

nested if statement

Passing one Argument to a

power

read

remainder

Replacing substring

Simple arrays

Special bash variables

substring

until loop

Upper Lower case

Variables & Data types

while loop

#!/bin/bash

# if [ condition ]; then
# your code
# elif
# your code
# else
# fi

AGE=$1

if [ $AGE -lt 13 ]; then
  echo "You are a Kid."
elif [ $AGE -lt 20 ]; then
  echo "You are a teenager."
elif [ $AGE -lt 65 ]; then
  echo "You are a adult."
else
  echo "You are an elder"
fi

# age.sh 55
# You are an adult.