1 files changed, 55 insertions, 0 deletions
diff --git a/REORG.TODO/manual/examples/popen.c b/REORG.TODO/manual/examples/popen.c
new file mode 100644
index 0000000000..cc7617c65c
--- /dev/null
+++ b/REORG.TODO/manual/examples/popen.c
@@ -0,0 +1,55 @@
+/* Pipe to a Subprocess
+   Copyright (C) 1991-2017 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License
+   as published by the Free Software Foundation; either version 2
+   of the License, or (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, if not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+
+void
+write_data (FILE * stream)
+{
+  int i;
+  for (i = 0; i < 100; i++)
+    fprintf (stream, "%d\n", i);
+  if (ferror (stream))
+    {
+      fprintf (stderr, "Output to stream failed.\n");
+      exit (EXIT_FAILURE);
+    }
+}
+
+/*@group*/
+int
+main (void)
+{
+  FILE *output;
+
+  output = popen ("more", "w");
+  if (!output)
+    {
+      fprintf (stderr,
+	       "incorrect parameters or too many files.\n");
+      return EXIT_FAILURE;
+    }
+  write_data (output);
+  if (pclose (output) != 0)
+    {
+      fprintf (stderr,
+	       "Could not run more or other error.\n");
+    }
+  return EXIT_SUCCESS;
+}
+/*@end group*/