raviranjan2003/shell-scripts

Shell Script

Display anything on console

    echo "I am Ravii"

Variables

    name="Ravii"
    echo $name

Take input from console

    echo "What is your name : "
    read name
    echo "Hello, $name"

    read -p "What is your name : " name
    echo "Hello, $name"

Operators

-Arithmetic Operators: +, -, *, /, %
-Comparison Operators: ==, !=, -eq, -ne, -lt, -le, -gt, -ge
-Logical Operators: && (AND), || (OR), ! (NOT)

Conditional

    a=5
    b=10
    if [ $a -gt $b ]; then
            echo "$a is greater than $b"
    else
            echo "$b is greater than $a"
    fi

Loops

For Loop

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

While Loop

    a=5
    while [ $a -gt 0 ]; do
        echo "Number a : $a"
        a=$((a-1))
    done