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Bourne shell was created in 1977.
The first command shell was 'sh', the Bourne shell (Steven Bourne).
The Bourne shell (sh) ,
The C shell (csh) ,
The Korn shell (ksh) ,
The Z-Shell (zsh) ,
The POSIX shell,
The Bourne Again SHell (Bash)null
The first shell was 'sh', the Bourne Shell
Bash shell. Stands for Bourne Again Shell