Initial revisionv1.2.7

1 files changed, 39 insertions, 0 deletions

diff --git a/catrw.c b/catrw.c
new file mode 100644
index 0000000..164d2a3
--- /dev/null
+++ b/catrw.c
@@ -0,0 +1,39 @@
+/*
+ *  catrw.c  --  open a file with O_RDWR and print it.
+ * 
+ *  This file is placed in the public domain.
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <errno.h>
+
+#define BUFSIZE 4096
+char buf[BUFSIZE];
+
+void catrw(int fd) {
+    int i;
+    for (;;) {
+	while ( (i = read(fd, buf, BUFSIZE)) < 0 && errno == EINTR)
+	    ;
+	if (i <= 0)
+	    break;
+	write(1, buf, i);
+    }
+}
+
+int main(int argc, char *argv[]) {
+    int fd;
+    if (argc == 1)
+	catrw(0);
+    else {
+	while (--argc && (fd = open(*++argv, O_RDWR))) {
+	    catrw(fd);
+	    close(fd);
+	}
+    }
+    return 0;
+}
+