bash-GNU Bourne Again Shell

bash ”GNU Bourne Again Shell

 bash [options] [file[arguments]] sh [options] [file[arguments]] 

bash is Copyright 1989, 1991 by the Free Software Foundation, Inc. bash is a 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 ).