Re: Ada Equivalent of "system()" in C?

[kst@thomsoft.com (Keith Thompson)]

In <emery-1604961854590001@line029.nwm.mindlink.net> emery@grebyn.com (David Emery) writes:
[...]
> Note that the return value is NOT the return value of the command, but
> rather of the fork() that is used to set up execution of the command.

That's not quite correct.  The system function returns -1 (and sets
errno) if the fork or exec fails.  Otherwise it returns the exit status
of the shell (sh) that it invokes to execute the command; the format of
this exit status is a bit tricky.  This information is from a SunOS 5.4
(Solaris 2.4) man page; see your local man page for details.

The above is Unix-specific.  The ISO C standard has very little to say
about the return value of system, or even its semantics.

-- 
Keith Thompson (The_Other_Keith) kst@thomsoft.com <*>
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