[SP/P5] Added solutions to some exercises from today

1 files changed, 30 insertions, 0 deletions

diff --git a/Year 3/System programming/Practicum5/ex6.c b/Year 3/System programming/Practicum5/ex6.c
new file mode 100644
index 0000000..86e206c
--- /dev/null
+++ b/Year 3/System programming/Practicum5/ex6.c
@@ -0,0 +1,30 @@
+#include <fcntl.h>
+#include <unistd.h>
+#include <sys/wait.h>
+#include <stdio.h>
+
+int main(int argc, char *argv[]) {
+	pid_t f = fork();
+	if (f < 0) {
+		perror("fork");
+		return 1;
+	}
+
+	if (f == 0) {
+		char *commargs[argc];
+		commargs[0] = argv[1];
+		for (int i = 0; i < argc - 2; i++)
+			commargs[i+1] = argv[i+1];
+		commargs[argc - 1] = NULL;
+
+		int w = open(argv[argc-1], O_WRONLY | O_CREAT, 0755);
+		dup2(w, 1);
+		close(w);
+		execvp(*commargs, commargs + 1);
+	}
+	else {
+		int status = -2;
+		wait(&status);
+		printf("Exit: %d\n", status);
+	}
+}