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are distinct (See POSIX.2 glossary). A utility is a executable, script or shell builtin; while a command can be any of those things plus lists, pipelines, compound commands (if, for, while) and shell function definitions.
are distinct (See POSIX.2 glossary). A utility is a executable, script or shell builtin; while a command can be any of those things plus lists, pipelines, compound commands (if, for, while) and shell function definitions.