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--- a/doc/bash.1
+++ b/doc/bash.1
@@ -4121,6 +4121,10 @@ A failure to open or create a file cause
Redirections using file descriptors greater than 9 should be used with
care, as they may conflict with file descriptors the shell uses
internally.
+.PP
+Note that the
+.B exec
+builtin command can make redirections take effect in the current shell.
.SS Redirecting Input
Redirection of input causes the file whose name results from
the expansion of
--- a/doc/bashref.texi
+++ b/doc/bashref.texi
@@ -3044,6 +3044,9 @@ Redirections using file descriptors grea
care, as they may conflict with file descriptors the shell uses
internally.
+Note that the @code{exec} builtin command can make redirections take
+effect in the current shell.
+
@subsection Redirecting Input
Redirection of input causes the file whose name results from
the expansion of @var{word}
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