.bashrc

.bashrc

# Generate Hash
# Usage:
# genhash
# genhash 64
function genhash() {
    cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w ${1:-32} | head -n 1
}

# Get External IP
# External IP
# https://ip-api.com/docs/dns
function extip() {
    curl -s "http://$(genhash).edns.ip-api.com/json";
    echo;
}

# Scan open local ports (1..1024)
# Usage:
# scan_ports 0.0.0.0
# scan_ports 192.168.0.1
function scan_ports() {
    host=$1

    for ((port=1; port<1024; port++)); do
        echo > /dev/null 2>&1 < /dev/tcp/${host}/${port}
        if (($? == 0)); then
            echo -e "$host\t$port";
            #printf '%d ' "$port";
        fi
    done

    echo;
}

export -f scan_ports
export -f extip
export -f genhash