Store a formatted message in a variable (does not work on zsh)

Format and print text.
More information: <https://www.gnu.org/software/coreutils/printf>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

printf -v {{myvar}} {{"This is %s = %d\n" "a year" 2016}}

click the source code to copy install printf on any operating system with command-not-found.com