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bs is a programming language and a compiler/interpreter for modest-sized programs on UNIX systems. [1] The bs command can be invoked either for interactive programming or with a file containing a program, optionally taking arguments, via a Unix shell, e.g., using a Shebang (Unix) #!/usr/bin/bs.
There are many variants of Unix shell: Bourne shell sh. Almquist shell (ash) Debian Almquist shell (dash) Bash (Unix shell) bash; KornShell ksh. Z shell zsh; C shell csh. TENEX C shell tcsh; Ch shell ch; Emacs shell eshell; Friendly interactive shell fish; PowerShell pwsh; rc shell rc, a shell for Plan 9 from Bell Labs and Unix; Stand-alone ...
Yacc (Yet Another Compiler-Compiler) is a computer program for the Unix operating system developed by Stephen C. Johnson.It is a lookahead left-to-right rightmost derivation (LALR) parser generator, generating a LALR parser (the part of a compiler that tries to make syntactic sense of the source code) based on a formal grammar, written in a notation similar to Backus–Naur form (BNF). [1]
The main MSYS2 environment provides a package manager (Pacman from Arch Linux), a bash shell, and other Unix programs. It uses a runtime library msys-2.0.dll (~20MB) that is derived from the Cygwin library cygwin1.dll, and is updated regularly to keep track of the Cygwin development. It is intended as a development environment, one that ...
The Z shell (Zsh) is a Unix shell that can be used as an interactive login shell and as a command interpreter for shell scripting. Zsh is an extended Bourne shell with many improvements, including some features of Bash, ksh, and tcsh. Zsh was created by Paul Falstad in 1990 while he was a student at Princeton University.
A Technical Standard for Shell and Utilities was created in The Open Group Base Specifications, Issue 6, which is itself a part of the Single UNIX Specification v 3. [48] A focus of their work was to "collect into a single document" practices which had been proven to work in industry and academia while making "minimal changes to existing ...
Snakemake is a Python-driven implementation for compiling and running bioinformatics workflows. [34] POSIX includes standardization of the basic features and operation of the Make utility, and is implemented with varying degrees of compatibility with Unix-based versions of Make. In general, simple makefiles may be used between various versions ...
A shell script (or job) can report progress of long running tasks to the interactive user. Unix/Linux systems may offer other tools support using progress indicators from scripts or as standalone-commands, such as the program "pv". [49] These are not integrated features of the shells, however.