Fix curl unable to establish ssl connection Sửa lỗi unable to establish ssl connection khi wget hay curl Fix unable to establish ssl connection Để sửa lỗi này thì chạy lệnh sau: /usr/sbin/update-ca-certificates –fresh Tham khảo https://www.linuxquestions.org/questions/slackware-14/wget-unable-to-establish-ssl-connection-while-downloading-libreoffice-from-slackbuild-4175642143/