The Bash Shell - PowerPoint PPT Presentation

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The Bash Shell

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The Bourne Again Shell was created for use in the GNU project. ... GNU project was started by Richard Stallman of the Free Software Foundation in ... – PowerPoint PPT presentation

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Title: The Bash Shell


1
The Bash Shell
  • Automating Your Life

2
The Bash Shell
  • The Bourne Again Shell was created for use in the
    GNU project. The GNU project was started by
    Richard Stallman of the Free Software Foundation
    in an effort to create a free version Unix for
    the ix86 along with all of the required
    utilities. Bash was intended to be the standard
    shell for this GNU system. When the complete GNU
    system failed to materialize Linux came on the
    scene and it adopted Bash as its standard shell.
    Bash is also available for pretty much every
    other Unix system and for Microsoft Windows.

3
Three Default Open Files
Program
stdout
Buffer
stdin
stderr
4
Pipes
Program 1
stdout
Program 2
Pipe
stdin
stdout
Program 3
Pipe
stdin
5
Shell/Environment Variables
Environment Variables
Shell Variables
Parent Process VAR1
Parent Process VAR1
Child Process VAR1
Child Process VAR????
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