Bash was invented many and many times over, it even says so, being the "Bourne Again Shell". So what you have here is a classic unix sh with extra bells and whi

Bash was invented many and many times over, it even says so, being the "Bourne Again Shell". So what you have here is a classic unix sh with extra bells and whistles and some workarounds to shoehorn it onto mordern environments that allow newlines and spaces in file names. For example, it reinvents the [ ... ]/test builtin as [[ ... ]] which bypasses some shell behaviors which can be surprising at times. http://mywiki.wooledge.org/BashFAQ/031 http://mywiki.wooledge.org/BashFAQ/031