Bash

name="John"
echo "Hi $name"  #=> Hi John

# if

if [[ -z "$string" ]]; then
    echo "String is empty"
elif [[ -n "$string" ]]; then
    echo "String is not empty"
fi

# wildcard

wildcard="*.txt"
options="iv"
cp -$options $wildcard /tmp

# Function

get_name() {
    echo "John"
}
get_name

# for

for i in /etc/rc.*; do
    echo "$i"
done

for ((i = 0 ; i < 100 ; i++)); do
    echo "$i"
done

for i in {1..5}; do
    echo "Welcome $i"
done

# Array

Fruits = ('Apple' 'Banana' 'Orange')

# Easy commands

echo $(whoami)       # Outputs commands

read name
echo $name