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Go (golang) crypto sample using cipher.StreamWriter and cipher.StreamReader to wrap io.Writer and io.Reader with AES encryption.
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Using GNU command line tools in macOS instead of FreeBSD tools
macOS is a Unix, and not built on Linux.
I think most of us realize that macOS isn't a Linux OS, but what that also means is that instead of shipping with the GNU flavor of command line tools, it ships with the FreeBSD flavor. As such, writing shell scripts which can work across both platforms can sometimes be challenging.
Homebrew
Homebrew can be used to install the GNU versions of tools onto your Mac, but they are all prefixed with "g" by default.
All commands have been installed with the prefix "g". If you need to use these commands with their normal names, you can add a "gnubin" directory to your PATH from your bashrc.
Enable X11 forward for ssh to load images from remote server on MacOS Mojave
Enable X11 forward to load images from remote server on MacOS Mojave
Steps
Install Xquartz to get X11 support on MacOS. You can google Xquartz and download it from its official site, or install using HomeBrew.
brew cask install xquartz
Launch Xquartz. Go to Preference -> Security, click the box Allow connections from clients. NOTE: You have to lauch Xquartz with Allow connections from clients enable everytime you want to ssh to remote server with X11 forwarding support.
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Amazon Linux 2 - install docker & docker-compose using 'sudo amazon-linux-extras' command
UPDATE (March 2020, thanks @ic): I don't know the exact AMI version but yum install docker now works on the latest Amazon Linux 2. The instructions below may still be relevant depending on the vintage AMI you are using.