Bourne shell [SEP] operating system
Bourne shell
The Bourne shell (codice_1) is a shell, or command-line interpreter, for computer operating systems.
The Bourne shell was the default shell for Version 7 Unix. Most Unix-like systems continue to have codice_2—which will be the Bourne shell, or a symbolic link or hard link to a compatible shell—even when other shells are used by most users.
Developed by Stephen Bourne at Bell Labs, it was a replacement for the Thompson shell, whose executable file had the same name—
Environment Real-Time (DMERT) is a hybrid time-sharing/real-time operating system developed in the 1970s at Bell Labs Indian Hill location in Naperville, Illinois uses a 1978 snapshot of Bourne Shell "VERSION sys137 DATE 1978 Oct 12 22:39:57". The DMERT shell runs on 3B21D computers still in use in the telecommunications industry.
Variants Korn shell.
The Korn shell (ksh) written by David Korn based on the original Bourne Shell source code, was a middle road between the Bourne shell and the C