we are now prepared for piping with _pipe and _dup2

1 files changed, 17 insertions, 0 deletions

diff --git a/userspace/grep.c b/userspace/grep.c
new file mode 100644
index 0000000..c37392f
--- /dev/null
+++ b/userspace/grep.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(int argc, char **argv)
+{
+    while(1)
+    {
+	char buf[256];
+	int l=fread(buf,1,255,stdin);
+	if(l==0)break;
+	buf[l]=0;
+	printf("grep: %s",buf);
+
+    }
+
+    return EXIT_SUCCESS;
+}