1 files changed, 70 insertions, 0 deletions
diff --git a/reference/C/CONTRIB/OR_PRACTICAL_C/13_2.c b/reference/C/CONTRIB/OR_PRACTICAL_C/13_2.c
new file mode 100644
index 0000000..a1dd50c
--- /dev/null
+++ b/reference/C/CONTRIB/OR_PRACTICAL_C/13_2.c
@@ -0,0 +1,70 @@
+/****************************************
+ * copy -- copy one file to another.    *
+ *                                      *
+ * Usage                                *
+ *      copy <from> <to>                *
+ *                                      *
+ * <from> -- the file to copy from      *
+ * <to>   -- the file to copy into      *
+ ****************************************/
+#include <stdio.h>
+#ifndef __MSDOS__       /* if we are not MS-DOS */
+#define __UNIX__        /* then we are UNIX */
+#endif __MSDOS__
+
+#include <stdlib.h>     /* ANSI Standard C file */
+
+#ifdef __UNIX__
+#include <sys/types.h>  /* file defines for UNIX filesystem */
+#include <sys/stat.h>
+#include <fcntl.h>
+#endif __UNIX__
+
+#ifdef __MSDOS__
+#include <fcntl.h>     /* file defines for DOS filesystem */
+#include <sys\stat.h>
+#include <io.h>
+#endif __MSDOS__
+
+void  exit();                   /* lib routine */
+
+#define BUFFER_SIZE (16 * 1024) /* use 16K buffers */
+
+main(int argc, char *argv[])
+{
+    char  buffer[BUFFER_SIZE];  /* buffer for data */
+    int   in_file;              /* input file descriptor */
+    int   out_file;             /* output file descriptor */
+    int   read_size;            /* number of bytes on last read */
+
+    if (argc != 3) {
+        (void) fprintf(stderr, "Error:Wrong number of arguments\n");
+        (void) fprintf(stderr, "Usage is: copy <from> <to>\n");
+        exit(8);
+    }
+    in_file = open(argv[1], O_RDONLY);
+    if (in_file < 0) {
+        (void) fprintf("Error:Unable to open %s\n", argv[1]);
+        exit(8);
+    }
+    out_file = open(argv[2], O_WRONLY | O_TRUNC | O_CREAT, 0666);
+    if (out_file < 0) {
+        (void) fprintf("Error:Unable to open %s\n", argv[2]);
+        exit(8);
+    }
+    while (1) {
+        read_size = read(in_file, buffer, sizeof(buffer));
+
+        if (read_size == 0)
+            break;              /* end of file */
+
+        if (read_size < 0) {
+            (void) fprintf(stderr, "Error:Read error\n");
+            exit(8);
+        }
+        (void) write(out_file, buffer, (unsigned int) read_size);
+    }
+    (void) close(in_file);
+    (void) close(out_file);
+    return (0);
+}