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Смотри также (See also)
Section 2.9.1.1, Command Search and Execution, ctags(1p), ed(1p),
sed(1p), sh(1p), stty(1p), vi(1p)
The Base Definitions volume of POSIX.1‐2017, Table 5-1, Escape
Sequences and Associated Actions, Chapter 8, Environment
Variables, Section 9.3, Basic Regular Expressions, Section 12.2,
Utility Syntax Guidelines
The System Interfaces volume of POSIX.1‐2017, access(3p)
