Moved back to 02_exercise

1 files changed, 0 insertions, 51 deletions

diff --git a/shell/beispiele/dup/dup.c b/shell/beispiele/dup/dup.c
deleted file mode 100644
index ea3c5a6..0000000
--- a/shell/beispiele/dup/dup.c
+++ /dev/null
@@ -1,51 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-
-/* https://www.youtube.com/watch?v=gaXigSu72A4 */
-static inline void die(const char* msg) {
-	perror(msg);
-	exit(EXIT_FAILURE);
-}
-
-int main(int argc, char **argv) {
-	int pdes[2];
-	pid_t child;
- 	
-	if (pipe(pdes) < 0)
-		die("pipe()");
- 	
-	if ((child = fork()) < 0)
-		die("fork()");
- 	
-	if (child == 0) {
-		/* child process */
-      	close(pdes[0]);
-		close(1);       /* close stdout */
-		
-		if (dup(pdes[1]) < 0)
-			die("dup()");
-		
-		/* now stdout and pdes[1] are equivalent (dup returns lowest free descriptor) */
-		if (execlp("cat", "cat", "/etc/passwd", NULL) < 0)
-			die("execlp()");
-		
-		exit(EXIT_SUCCESS);
-	}
-	else {
-		/* parent process */
-		close(0);       /* close stdin */
-		close(pdes[1]);
-		
-		if (dup(pdes[0]) < 0)
-			die("dup()");
-		
-		/* now stdin and pdes[0] are equivalent (dup returns lowest free descriptor) */
-		if (execlp("wc", "wc", "-l", NULL) < 0)
-			die("execlp()");
-		
-		exit(EXIT_SUCCESS);
-	}
-	
-	return 0;
-}