Graduate

Signed-off-by: Matt Strapp <matt@mattstrapp.net>

1 files changed, 50 insertions, 0 deletions

diff --git a/csci4061/092120_breakout/main.c b/csci4061/092120_breakout/main.c
new file mode 100644
index 0000000..8d8e08d
--- /dev/null
+++ b/csci4061/092120_breakout/main.c
@@ -0,0 +1,50 @@
+/*
+CSci 4061 - Recitation 2 - 21st Sept 2020
+Breakout 1
+An iditoic loner's lone attempt
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <unistd.h>
+#include <errno.h>
+
+int main(int argc, char **argv) {
+	// take 'n' from the input and convert to integer
+	// hint: see cmd slide
+	if (argc < 2) {
+		printf("USAGE: ./main int\n");
+		return -1;
+	}
+	int n = strtol(argv[1], NULL, 10);
+	// for i in n
+	//		create child process
+	//			print pid //hint: check week 2 slides
+	//			call execl to print 'hello there' using 'echo' //hint: check recitation slide
+	pid_t pid;
+	for (int i=0; i<n; i++) {
+		pid = fork();
+		if (pid == 0) {
+			
+		} else {
+printf("%d\n", getpid());
+			execl("/bin/echo", "/bin/echo", "hello", "there", NULL);
+		}
+	}
+	// parent waits for all child processes to terminate
+	for (int i=0; i<n; i++) {
+		wait(NULL);
+	}
+	// parent create child process
+	//		call execv on 'ptime' executable // hint: similar to 'echo' usage in slide
+	pid = fork();
+	if (pid != 0) {
+		char *args[] = {"./ptime", NULL};
+		execv(*args, args);
+	}
+	// parent waits for child to complete
+	waitpid(pid, NULL, 0);
+	return 0;
+}
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