Shell function to download the last torbrowser version

dl_latest_tor_browser.sh

dl_latest_tor_browser() {
    OLD_PWD=$(pwd)
    LAST_VER=$(\curl -s 'https://www.torproject.org/projects/torbrowser.html.en' | sed -n "s|^.*\.\./dist/torbrowser/\([0-9]\.[0-9]\.[0-9]\)/tor-browser-linux64-\([0-9]\.[0-9]\.[0-9]\)_fr\.tar\.xz\".*$|\1|p")
    if [ ! -n "$LAST_VER" ]; then
        LAST_VER=$(\curl -s 'https://www.torproject.org/projects/torbrowser.html.en' | sed -n "s|^.*\.\./dist/torbrowser/\([0-9]\.[0-9]\)/tor-browser-linux64-\([0-9]\.[0-9]\)_fr\.tar\.xz\".*$|\1|p")
    fi
    cd "$HOME/Téléchargements"
    if [ -d 'tor-browser_fr' ]; then
        CUR_VER=$(sed -n 1p tor-browser_fr/Browser/TorBrowser/Docs/ChangeLog.txt | sed -n "s/^Tor Browser \(.*\) -- .*$/\1/p")
        if [ "$LAST_VER" = "$CUR_VER" ]; then
            echo "You already have the last stable release: $LAST_VER"
            echo ''
            echo "Start it with: ${HOME}/Téléchargements/tor-browser_fr/Browser/start-tor-browser --detach"
            cd "$OLD_PWD"
            return
        fi
        rm -rf tor-browser_fr
    fi
    TOR_BUNDLE="tor-browser-linux64-${LAST_VER}_fr.tar.xz"
    [ -f "$TOR_BUNDLE" ] && rm "$TOR_BUNDLE"
    [ -f "$TOR_BUNDLE.asc" ] && rm "$TOR_BUNDLE.asc"
    wget "https://dist.torproject.org/torbrowser/${LAST_VER}/${TOR_BUNDLE}"
    wget "https://dist.torproject.org/torbrowser/${LAST_VER}/${TOR_BUNDLE}.asc"
    gpg --verify ${TOR_BUNDLE}{.asc,}
    tar xJf ${TOR_BUNDLE}
    rm "$TOR_BUNDLE" "$TOR_BUNDLE.asc"
    echo ''
    echo "The TOR browser v${LAST_VER} is here: ${HOME}/Téléchargements/tor-browser_fr"
    echo ''
    echo "Start it with: ${HOME}/Téléchargements/tor-browser_fr/Browser/start-tor-browser --detach"
    cd "$OLD_PWD"
}