Reverse the order of pages within each given file and concatenate them

Shell frontend for the LaTeX pdfpages package for mingling PDFs.
More information: <https://github.com/rrthomas/pdfjam>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

pdfjam {{files...}} {{last-1}} --suffix {{reversed}}

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