NAME
       bash - GNU Bourne-Again SHell

SYNOPSIS
       bash [options] [file]

COPYRIGHT
       Bash is Copyright (C) 1989-2005 by the Free Software Foundation, Inc.

DESCRIPTION
       Bash  is  an  sh-compatible  command  language interpreter that executes commands read from the standard
       input or from a file.  Bash also incorporates useful features from the Korn and C shells (ksh and  csh).

       Bash is intended to be a conformant implementation of the IEEE POSIX Shell and Tools specification (IEEE
       Working Group 1003.2).  Bash can be configured to be POSIX-conformant by default.

http://bashconsole.org/man.1.bash