Cloudflare– What do the SSL options mean? https://support.cloudflare.com/hc/en-us/articles/200170416-What-do-the-SSL-options-mean-
How to get a Let’s Encrypt certificate while using CloudFlare https://community.letsencrypt.org/t/how-to-get-a-lets-encrypt-certificate-while-using-cloudflare/6338?source_topic_id=7365
How to Automatically Free Up Storage Space with macOS Sierra http://www.howtogeek.com/272765/how-to-automatically-free-up-storage-space-with-macos-sierra/
The Best New Features in macOS Sierra (and How to Use Them) http://www.howtogeek.com/263543/the-best-new-features-in-macos-sierra/
How To Configure ProFTPd To Use SFTP Instead of FTP https://www.digitalocean.com/community/tutorials/how-to-configure-proftpd-to-use-sftp-instead-of-ftp
Linux – group member cannot delete file with rw permission – Super User https://superuser.com/questions/784952/linux-group-member-cannot-delete-file-with-rw-permission
linux – Why can’t I delete a file where I have group write permissions on? – Super User http://superuser.com/questions/373115/why-cant-i-delete-a-file-where-i-have-group-write-permissions-on
filesystems – How does the sticky bit work? – Unix & Linux Stack Exchange http://unix.stackexchange.com/questions/79395/how-does-the-sticky-bit-work
Time machine backup slow until I disabled real-time protection – Avira Answers https://answers.avira.com/en/question/time-machine-backup-slow-until-i-disabled-realtime-protection-46705
Adding folders and files exceptions for the Real-Time Protection of Avira Free Antivirus for Mac – Avira Answers https://answers.avira.com/en/question/adding-folders-and-files-exceptions-for-the-realtime-protection-of-avira-free-antivirus-for-mac-9751?sh=true