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Some operating systems define an execute permission which can be granted to users/groups for a file when the file system itself supports it. On Unix systems, the execute permission controls access to invoking the file as a program, and applies both to executables and scripts.
/bin/sh in Doug Gwyn's (US Army BRL) System V on BSD package included Ron Natalie's version of the SVR2 /bin/sh that had both job control and command line editing. This was a contemporary of the original ksh at a time when it had not escaped AT&T. This was subsequently the /bin/sh that shipped with all the CMU Mach-derived systems. [32]
tcsh and sh shell windows on a Mac OS X Leopard [1] desktop. A Unix shell is a command-line interpreter or shell that provides a command line user interface for Unix-like operating systems. The shell is both an interactive command language and a scripting language, and is used by the operating system to control the execution of the system using ...
Scripting languages commonly found on UNIX, Linux, and POSIX-compliant operating system installations include: KornShell (ksh) in several possible versions such as ksh88, Korn Shell '93 and others. The Bourne shell (sh), one of the oldest shells still common in use; The C shell (csh) GNU Bash (bash)
In computing, a shell is a computer program that exposes an operating system's services to a human user or other programs. In general, operating system shells use either a command-line interface (CLI) or graphical user interface (GUI), depending on a computer's role and particular operation. It is named a shell because it is the outermost layer ...
The Bourne shell (sh) is a shell command-line interpreter for computer operating systems. It first appeared on Version 7 Unix , as its default shell . Unix-like systems continue to have /bin/sh —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.
Learn how to download and install or uninstall the Desktop Gold software and if your computer meets the system requirements.
(FreeBSD 14 changed the default root shell to sh to match the default user shell [5] whereas OpenBSD uses the Korn shell ksh for both root and regular users. [6]) tcsh added filename and command completion and command line editing concepts borrowed from the TENEX operating system, which is the source of the “t”. [7]