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BSD 2.11 - man page for intro (bsd section 1)

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INTRO(1)										 INTRO(1)

NAME
       intro - introduction to commands

DESCRIPTION
       This section describes publicly accessible commands in alphabetic order.  Certain distinc-
       tions of purpose are made in the headings:

       (1)    Commands of general utility.

       (1C)   Commands for communication with other systems.

       (1G)   Commands used primarily for graphics and computer-aided design.

       N.B.: Commands related to system maintenance used to appear in section 1 manual pages  and
       were  distinguished by (1M) at the top of the page.  These manual pages now appear in sec-
       tion 8.

SEE ALSO
       Section (6) for computer games.

       How to get started, in the Introduction.

DIAGNOSTICS
       Upon termination each command returns two bytes of status, one supplied by the system giv-
       ing  the  cause for termination, and (in the case of `normal' termination) one supplied by
       the program, see wait and exit(2).  The former byte is 0 for normal termination, the  lat-
       ter  is customarily 0 for successful execution, nonzero to indicate troubles such as erro-
       neous parameters, bad or inaccessible data, or other inability to cope with  the  task  at
       hand.   It  is  called  variously  `exit  code',  `exit	status'  or `return code', and is
       described only where special conventions are involved.

7th Edition				  April 29, 1985				 INTRO(1)
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