Check if the ubuntu image '-latest' redirects work.

test-ubuntu-image-redirections.sh

#!/usr/bin/env bash
# Check if the ubuntu image '-latest' redirects work.

#source /etc/os-release
UBUNTU_CODENAME=jammy
VERSION_ID=22.04

all_checks_successful=true

function check_url()
{
    url="$1"

    if ! response=$(curl --silent --head --output /dev/null --write-out '%{http_code}' "$url"); then
        echo "Failed to run curl for url '$url' (Exit Code: $?)."
    fi

    if [ "$response" != "301" ]; then # 301 is the expected status code for a redirect
        all_checks_successful=false
        echo "Get $url resonded with $response"
    fi
}

function server_image_url()
{
    DPKG_ARCH=$1

    if [ "$DPKG_ARCH" = "amd64" ]; then
        echo https://releases.ubuntu.com/$UBUNTU_CODENAME/ubuntu-$VERSION_ID-latest-live-server-$DPKG_ARCH.iso
    else
        echo http://cdimage.ubuntu.com/releases/$UBUNTU_CODENAME/release/ubuntu-$VERSION_ID-latest-live-server-$DPKG_ARCH.iso
    fi
}

function desktop_image_url()
{
    DPKG_ARCH=$1

    if [ "$DPKG_ARCH" = "amd64" ]; then
        echo https://releases.ubuntu.com/$UBUNTU_CODENAME/ubuntu-$VERSION_ID-latest-desktop-$DPKG_ARCH.iso
    else
        echo http://cdimage.ubuntu.com/releases/$UBUNTU_CODENAME/release/ubuntu-$VERSION_ID-latest-desktop-$DPKG_ARCH.iso
    fi
}

check_url "$(server_image_url amd64)"
check_url "$(desktop_image_url amd64)"
check_url "$(server_image_url arm64)"
check_url "$(server_image_url ppc64el)"
check_url "$(server_image_url s390x)"

if $all_checks_successful; then
    echo "All checks successful!"
fi

Updated script, because there are no desktop images for s390x, arm64, ppc64el and riscv64 and the live-server riscv64 image is not an .iso, as there is no cdrom drive.