4 files changed, 64 insertions, 7 deletions

diff --git a/install.sh b/install.sh
index f104fa6..68b7238 100644
--- a/install.sh
+++ b/install.sh
@@ -15,12 +15,18 @@ rm premake.tar.gz
 premake5 gmake
 make
 
-sudo cp ./bin/Debug/lush/lush /usr/bin/lush
+# Install the new shell binary to a temporary location
+sudo cp ./bin/Debug/lush/lush /usr/bin/lush.new
 
+# Atomically replace the old binary
+sudo mv /usr/bin/lush.new /usr/bin/lush
+
+# Ensure the shell is registered in /etc/shells
 if ! grep -Fxq "/usr/bin/lush" /etc/shells; then
     echo "/usr/bin/lush" | sudo tee -a /etc/shells >/dev/null
 fi
 
+# Optionally change the shell
 chsh -s /usr/bin/lush
 
 echo "====================="
diff --git a/premake5.lua b/premake5.lua
index 0fec5e5..3818236 100644
--- a/premake5.lua
+++ b/premake5.lua
@@ -11,6 +11,7 @@ files({
 	"src/**.h",
 	"src/**.c",
 })
+defines({ 'LUSH_VERSION="0.0.1"' })
 
 filter("configurations:Debug")
 defines({ "DEBUG" })
diff --git a/src/help.h b/src/help.h
new file mode 100644
index 0000000..80c9bb3
--- /dev/null
+++ b/src/help.h
@@ -0,0 +1,36 @@
+#ifndef HELP_H
+#define HELP_H
+
+char *lush_get_help_text() {
+    return "    ..,;;;;;::::::::cccccclllllooooddddxxxdoc,    \n"
+"  .,;;,,'',,,,,,,,,,,;;;;;;;:::::::cccccllloxkxc  \n"
+" ,,,.                                        'oOk.\n"
+".,,               ......                       dOx\n"
+",;'       .:c.   ;::::::                       cOO\n"
+";;'         :Nl  ;::::::                       :O0\n"
+";;'          KN: ;::::::                       :00\n"
+";;'         :NNl ;::::::                       :00\n"
+";;' l:....;kNNk. ;::::::                       :00\n"
+"::'  ;x0XNX0d,   ;::::::                       :00\n"
+"::'              '''''''                       :00\n"
+"::'                                            :00\n"
+"::'                                            :00\n"
+"::'                                            :00\n"
+"cc,                                            :00\n"
+"cc,                                            :00\n"
+"cc,                                            :00\n"
+":c;                                            c00\n"
+".lc                                            k0;\n"
+" .lc.                                       .,x0; [0\n"
+"    oollccccllllllllooooooodddddddxxxxxxxxxk00.   \n"
+"       .dddddxxxxxxkkkkkkOOOOOO00000000000        \n"
+".____                                  _________.__           .__  .__   \n"
+"|    |    __ __  ____ _____ _______   /   _____/|  |__   ____ |  | |  |  \n"
+"|    |   |  |  \\/    \\\\__  \\\\_  __ \\  \\_____  \\ |  |  \\_/ __ \\|  | |  |  \n"
+"|    |___|  |  /   |  \\/ __ \\|  | \\/  /        \\|   Y  \\  ___/|  |_|  |__\n"
+"|_______ \\____/|___|  (____  /__|    /_______  /|___|  /\\___  >____/____/\n"
+"        \\/          \\/     \\/                \\/      \\/     \\/           \n";
+
+}
+
+#endif // HELP_H
diff --git a/src/lush.c b/src/lush.c
index 9094c57..846ce20 100644
--- a/src/lush.c
+++ b/src/lush.c
@@ -16,9 +16,11 @@ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */
 
 #include "lush.h"
+#include "help.h"
 #include <bits/time.h>
 #include <linux/limits.h>
 #include <pwd.h>
+#include <signal.h>
 #include <stdbool.h>
 #include <stdio.h>
 #include <stdlib.h>
@@ -71,8 +73,12 @@ int lush_cd(char ***args) {
 }
 
 int lush_help(char ***args) {
-	// TODO: make this more fun
-	printf("Lunar Shell Help Page\n\n");
+	printf("%s\n", lush_get_help_text());
+#ifdef LUSH_VERSION
+	printf("Lunar Shell, version %s\n", LUSH_VERSION);
+#endif
+	printf("These shell commands are defined internally. Type 'help' at any "
+		   "time to reference this list.\n");
 	printf("Available commands: \n");
 	for (int i = 0; i < lush_num_builtins(); i++) {
 		printf("- %s\n", builtin_strs[i]);
@@ -102,7 +108,7 @@ int lush_time(char ***args) {
 
 	elapsed_time = (end.tv_sec - start.tv_sec) * 1000.0 +
 				   (end.tv_nsec - start.tv_nsec) / 1e6;
-	printf("Time: %.3f milliseconds", elapsed_time);
+	printf("Time: %.3f milliseconds\n", elapsed_time);
 
 	// return pointer back to "time" for free()
 	args[0]--;
@@ -278,12 +284,20 @@ int lush_execute_pipeline(char ***commands, int num_commands) {
 void lush_execute_command(char **args, int input_fd, int output_fd) {
 	// create child
 	pid_t pid;
-	pid_t wpid;
 	int status;
 
+	// ignore SIGINT in the parent process
+	struct sigaction sa;
+	sa.sa_handler = SIG_IGN;
+	sigaction(SIGINT, &sa, NULL);
+
 	if ((pid = fork()) == 0) {
 		// child process content
 
+		// restore default sigint for child
+		sa.sa_handler = SIG_DFL;
+		sigaction(SIGINT, &sa, NULL);
+
 		// redirect in and out fd's if needed
 		if (input_fd != STDIN_FILENO) {
 			dup2(input_fd, STDIN_FILENO);
@@ -307,7 +321,7 @@ void lush_execute_command(char **args, int input_fd, int output_fd) {
 	} else {
 		// parent process
 		do {
-			wpid = waitpid(pid, &status, WUNTRACED);
+			waitpid(pid, &status, WUNTRACED);
 		} while (!WIFEXITED(status) && !WIFSIGNALED(status));
 	}
 }
@@ -353,7 +367,7 @@ int main() {
 		}
 
 		// Print the prompt
-		printf("%s@%s:%s$ ", username, device_name, prompt_cwd);
+		printf("[%s@%s:%s] ", username, device_name, prompt_cwd);
 
 		char *line = lush_read_line();
 		char **commands = lush_split_pipes(line);