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-rw-r--r--doc/tools.texi8
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/tools.texi b/doc/tools.texi
index 5104beaa5..9301334c7 100644
--- a/doc/tools.texi
+++ b/doc/tools.texi
@@ -407,6 +407,14 @@ changing.
This means that the changes will take effect at run-time, as far as
this is possible. Otherwise, they will take effect at the next start
of the respective backend programs.
+
+@item --status-fd @var{n}
+@opindex status-fd
+Write special status strings to the file descriptor @var{n}. This
+program returns the status messages SUCCESS or FAILURE which are
+helpful when the caller uses a double fork approach and can't easily
+get the return code of the process.
+
@manpause
@end table