An attempt to download a binary from github and place it under ${HOME}/bin. Uses gojq.

gistfile1.txt

function get_binary_from_latest_github_release() {
    project=$1
    repo=$2
    extension=$3

    kernel_name=$(uname -s)
    if [[ ${kernel_name} == Linux* ]]; then
        os_kernel="linux"
    fi
    platform=$(uname -m)
    if [[ ${platform} == x86_64 || ${platform} == amd64 ]]; then
        os_platform="amd64"
    fi
    
    download_url=$(curl --retry 3 -L "https://api.github.com/repos/${project}/${repo}/releases/latest" | gojq -rec '.assets[] | .browser_download_url' | grep "${os_kernel}" | grep "${os_platform}" | egrep "${extension}\$" | grep -v grep)

    pushd /tmp
        downloaded_file=$(curl --retry 3 -L -O -w '%{filename_effective}' "${download_url}")
    popd
    
    if [[ ${downloaded_file} == *.tar.gz || ${downloaded_file} == *.tgz ]]; then
        binary=${repo}
        # some archives may have nested folders
        # list archive contents, then hunt for the binary as last word
        extract_from_archive=$(tar tzf /tmp/${downloaded_file} | egrep "/?${binary}\$")
        # on this line, using tr delete everything that is complement of /
        # in other words, delete all characters except /
        # then get character count -> tells us how many components to strip
        strip_components_count=$(echo "${extract_from_archive}" | tr -cd '/' | wc -c)
        
        mkdir -p ${HOME}/bin
        pushd ${HOME}/bin
            tar xzf "/tmp/${downloaded_file}" --strip-components=${strip_components_count} "${extract_from_archive}"
        popd
        chmod u+x ${HOME}/bin/${binary}
    fi
}