Theo de Raadt wrote on Tue, Apr 11, 2017 at 07:08:30AM -0600:

> sysexits.h is a thing that came from sendmail, and only a few things
> use it.  Further use isn't encouraged.

I'd like to make that plainer.  It isn't the first time people
waste time reading sysexits(3) and arguing about it.


Index: sysexits.3
RCS file: /cvs/src/share/man/man3/sysexits.3,v
retrieving revision 1.12
diff -u -r1.12 sysexits.3
--- sysexits.3  30 Dec 2015 16:41:52 -0000      1.12
+++ sysexits.3  11 Apr 2017 14:06:19 -0000
@@ -40,7 +40,7 @@
 Some programs use defined error codes to distinguish between possible errors.
 However, most programs in
-do not.
+do not, and using these codes in additional programs is not recommended.
 The successful exit is always indicated by a status of 0, or
 .Dv EX_OK .

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