bash: Simple Commands

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1 3.2.1 Simple Commands
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1 A simple command is the kind of command encountered most often.  It's
1 just a sequence of words separated by 'blank's, terminated by one of the
1 shell's control operators (⇒Definitions).  The first word
1 generally specifies a command to be executed, with the rest of the words
1 being that command's arguments.
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1    The return status (⇒Exit Status) of a simple command is its
1 exit status as provided by the POSIX 1003.1 'waitpid' function, or 128+N
1 if the command was terminated by signal N.
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