Starting other shells
Review of the three primary UNIX shells Bourne shell
The Bourne shell was written before the other two primary shells. It has the smallest number of features of any of the shells, but is commonly used
to write shell scripts. Bourne shell scripts can be run from either the Bourne or Korn shells because Korn is backwards compatible with Bourne.
Korn shell
The Korn shell was written last of the three primary shells. It is the Bourne shell plus some additional programming features.
The Korn shell was developed at AT&T's Bell labs.
C shell
The C shell was written after the Bourne shell and is not compatible with the other two shells. The C shell was written at UC Berkeley.
Other popular shells
The Korn shell was developed at AT&T's Bell labs.
C shell
The C shell was written after the Bourne shell and is not compatible with the other two shells. The C shell was written at UC Berkeley.
Other popular shells include the bash shell (the “Bourne again” shell), which is an enhanced Bourne shell distributed with Linux and some
other UNIX systems. It is available for free on the Internet. Tcsh is another popular shell. It is a C shell with added features.
