init commit

3sem/seminars/l10/02.c

@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <wait.h>
+
+// cmd1 | cmd2
+
+int
+main(int argc, char **argv)
+{
+    char *cmd1 = argv[1];
+    char *cmd2 = argv[2];
+
+    int fd[2];
+    pipe(fd);
+
+    if (!fork()) {
+        dup2(fd[1], 1);
+        close(fd[0]);
+
+        execlp(cmd1, cmd1, NULL);
+        _exit(1);
+    } else if (!fork()) {
+        dup2(fd[0], 0);
+        close(fd[1]);
+
+        execlp(cmd2, cmd2, NULL);
+        _exit(1);
+    } else {
+        close(fd[0]);
+        close(fd[1]);
+    }
+
+    while (wait(NULL) != -1)
+        ;
+
+    return 0;
+}