

User can either download the binaries and source code or install the packages provided by Linux distributions and other supported systems. p7zip supports RAR format for unpacking or extract only. P7zip is the Unix command-line port of 7-Zip, which has many supported formats. Should there be more than one answer, the most accurate and most complete answer will be accepted after some time (not immediately). This is a self-answer question that has been written like a new question, which was created based on the discussion in this meta post.

p7zip should be able to open RAR files like 7-zip does, but some recently downloaded RAR files can not be opened using p7zip. P7zip is essentially the 7-zip archive manager on Linux, except that does not include the graphical interface.

This is a more specific question of How to open rar file in linux (asked in 2015) that had no detailed answer for p7zip to open RAR files at this time of writing.
