Small fixes as always, + add pi program

src/kernel/shell.c

@@ -16,13 +16,35 @@
 #define MAX_ARGS     64
 
 // Splash screen: esthetic stuff.
-
-char* motd[] = 
+char* motd[] =
 {
+	"I should be root, really.",
+	"Not watching you!",
 	"Now in 2D!",
 	"Supercalifragilisticexpialidocious!",
 	"Tylko jedno w glowie mam!",
+	"Greetings, magic poppy!",
+	"I'm stuck in this kernel's shell, get me out!",
+	"And now, solve that equation!",
+	"Powered by TCC Incorporated.",
+	"Compiled at 69, CoquaineBaule Ave.",
+	"Shouldn't we be, uh, doing something?",
+	"We are the florists, we pick the plants!",
+	"Lalalalala, I pick the plants!",
+	"Woah, we're half-way there...",
+	"The CROU will never die!",
+	"Technoblade never dies!",
+	"Hi. My name is Guitar.",
+	"space station No. 9",
+	"May the orange juice be with you !",
+	"Bloody grated carrots!",
+	"Good night, kiddos...",
+	"I like trains",
+	"I fear planes",
+	"Bruteforce.exe",
+	"Ohayogozaimasu!",
 };
+
 int motd_size = sizeof(motd)/sizeof(motd[0]);
 
 bool do_splash = true;
@@ -113,6 +135,7 @@ void shell_install()
   register_command("time", program_time);
   register_command("read", program_read);
   register_command("reboot", program_reboot);
+  register_command("pi", program_pi);
 
   for (;;)
   {

src/programs/misc.c

@@ -73,7 +73,7 @@ void program_uptime()
 
 void program_help()
 {
-	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\t   reboot\n");
+	printf("help\tpanic\twords\tprimes\trainbow\tclear\nmath\tbf\t   uptime   echo\t  sysinfo\tconway\nrot13   morse\tcowsay   time\t  read\t   reboot\npi\n");
 }
 
 // Panic

src/programs/pi.c

@@ -0,0 +1,34 @@
+// Program for Pi computation using Leibniz series
+// Author: xamidev
+// Licensed under the Unlicense. See the repo below.
+// https://github.com/xamidev/blankos
+
+#include "../libc/stdio.h"
+#include "../libc/string.h"
+
+void program_pi(int argc, char* argv[])
+{
+	if (argc < 2)
+	{
+		printf("Usage: %s <terms>\n", argv[0]);
+		return;
+	}
+
+	double pi = 0.0;
+	int terms = atoi(argv[1]);
+	
+	for (int i=0; i<terms; i++)
+	{
+		double term = 1.0/(2*i+1);
+		if (i%2 == 0)
+		{
+			pi += term;
+		} else {
+			pi -= term;
+		}
+	}
+
+	pi *= 4;
+
+	printf("%f\n", pi);
+}

src/programs/primes.c

@@ -31,9 +31,12 @@ void program_primes(int argc, char* argv[])
 
 	for (long long x=0; x<primes_max; x++)
 	{	
-		if (isPrime(x))
+		if (isPrime(x) && x != 3301)
 		{
 				printf("%d ", x);	
+		} else if(x == 3301)
+		{
+				colorputs("3301 ", red, black);
 		}
 		delay(1);
 	}

src/programs/programs.h

@@ -17,6 +17,7 @@ void get_meminfo(unsigned int multiboot_info_address);
 void program_conway();
 void program_cowsay();
 void cowsay(); // Splash screen
+void program_pi();
 
 // Ciphers
 void program_rot13();