BASH SHELL SCRIPTING INTRODUCTION




Bash is a Unix shell written by Brian Fox for the GNU Project as a free software replacement for the Bourne shell (sh). Released in 1989, it has been distributed widely as the shell for the GNU operating system and as the default shell on Linux and Mac OS X. It has been ported to Microsoft Windows and distributed with Cygwin and MinGW, to DOS by the DJGPP project, to Novell NetWare and to Android via various terminal emulation applications.

Bash is a command processor, typically run in a text window, allowing the user to type commands which cause actions. Bash can also read commands from a file, called a script. Like all Unix shells, it supports filename wildcarding, piping, here documents, command substitution, variables and control structures for condition-testing and iteration. The keywords, syntax and other basic features of the language were all copied from sh. Other features, e.g., history, were copied from csh and ksh. Bash is a POSIX shell but with a number of extensions.

BASH SHELL SCRIPTING DEFINITIVE GUIDE

BASH SHELL PRINTING I
BASH SHELL PRINTING II
BASH SHELL PRINTING III
BASH SHELL PRINTING IV

BASH SHELL SCRIPTING IN UBUNTU I
BASH SHELL SCRIPTING IN UBUNTU II
BASH SHELL SCRIPTING IN MAX OS X
BASH SHELL SCRIPTING IN WINDOWS I
BASIC SHELL SCRIPTING IN WINDOWS II

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