оболочка, стандартный интерпретатор командного языка (shell, the standard command language interpreter)
Смотри также (See also)
Section 2.9.1.1, Command Search and Execution, Chapter 2, Shell
Command Language, cd(1p), echo(1p), exit(1p), fc(1p), pwd(1p),
invalid, set(1p), stty(1p), test(1p), trap(1p), umask(1p), vi(1p)
The Base Definitions volume of POSIX.1‐2017, Chapter 8,
Environment Variables, Section 12.2, Utility Syntax Guidelines
The System Interfaces volume of POSIX.1‐2017, dup(3p), exec(1p),
exit(3p), fork(3p), open(3p), pipe(3p), signal(3p), system(3p),
ulimit(3p), umask(3p), wait(3p)
