diff --git a/README.md b/README.md
index de64498..2b94a8f 100644
--- a/README.md
+++ b/README.md
@@ -1,10 +1,8 @@
 # micro-utils
-[Compile]
-	cc builder/builder.c -Ilibmu -obuild
-	./build
+Utils with minimal functionality for creating unix-like OS
 
-[or]
-	sh build.sh
+Systems useing micro-utils:
+[PlainOs](https://nlight.dimension.sh)
+
+License: wtfpl
 
-[Config]
-	edit config.h
diff --git a/config.h b/config.h
index 5b1760e..9be83c2 100644
--- a/config.h
+++ b/config.h
@@ -16,6 +16,11 @@
 /* mount config */
 #define MOUNT_CFG "/etc/fstab"
 
+/* colors for ls */
+#define LS_DIR_COLOR "\033[1;34m"
+#define LS_LINK_COLOR "\033[1;35m"
+#define LS_EXE_COLOR "\033[1;32m"
+
 /* RunComm prompt */
 #define RC_PS "> "
 
diff --git a/coreutils/ls.c b/coreutils/ls.c
index 98f533c..c7385c5 100644
--- a/coreutils/ls.c
+++ b/coreutils/ls.c
@@ -13,6 +13,7 @@
 #include <sys/ioctl.h>
 #include "make_path.h"
 #include "get_stat.h"
+#include "config.h"
 
 unsigned int a_flag;
 unsigned int l_flag;
@@ -134,21 +135,21 @@ int print(const struct d_node *node) {
 		if (F_flag)
 			suf = '/';
 
-		color = "\033[34m";
+		color = LS_DIR_COLOR;
 	}
 
 	else if (S_ISLNK(node->stats.st_mode)) {
 		if (F_flag)
 			suf = '@';
 
-		color = "\033[35m";
+		color = LS_LINK_COLOR;
 	}
 
 	else if ((node->stats.st_mode & S_IXUSR) || (node->stats.st_mode & S_IXGRP) || (node->stats.st_mode & S_IXOTH)) {
 		if (F_flag)
 			suf = '*';
 
-		color = "\033[32m";
+		color = LS_EXE_COLOR;
 	}
 
 
diff --git a/coreutils/sync.c b/coreutils/sync.c
index ef52bf6..25ae466 100644
--- a/coreutils/sync.c
+++ b/coreutils/sync.c
@@ -4,24 +4,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main(const int argc, const char **argv) {
-	if (argc == 1)
-		sync();
-
-	for (int i = 1; i < argc; i++) {
-		int fd = open(argv[i], O_WRONLY);
-		if (fd < 0) {
-			fprintf(stderr, "sync: %s\n", strerror(errno));
-			return 1;
-		}
-
-		if (fsync(fd)) {
-			fprintf(stderr, "sync: %s\n", strerror(errno));
-			return 1;
-		}
-
-		close(fd);
-	}
-
+int main(void) {
+	sync();
 	return 0;
 }
diff --git a/procps/kill.c b/procps/kill.c
new file mode 100644
index 0000000..d546e5c
--- /dev/null
+++ b/procps/kill.c
@@ -0,0 +1,88 @@
+#include <stdio.h>
+#include <errno.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <unistd.h>
+
+typedef struct {
+	const char *name;
+	int signal;
+} SIG;
+
+SIG signals[] = {
+	{"HUP", SIGHUP},
+	{"INT", SIGINT},
+	{"QUIT", SIGQUIT},
+	{"ILL", SIGILL},
+	{"TRAP", SIGTRAP},
+	{"ABRT", SIGABRT},
+	{"IOT", SIGIOT},
+	{"BUS", SIGBUS},
+	{"FPE", SIGFPE},
+	{"KILL", SIGKILL},
+	{"USR1", SIGUSR1},
+	{"SEGV", SIGSEGV},
+	{"USR2", SIGUSR2},
+	{"PIPE", SIGPIPE},
+	{"ALRM", SIGALRM},
+	{"TERM", SIGTERM},
+	{"STKFLT", SIGSTKFLT},
+	{"CHLD", SIGCHLD},
+	{"STOP", SIGSTOP},
+	{"POLL", SIGPOLL}
+};
+
+
+int parse_sig(char *arg) {
+	int sig = atoi(arg);
+	if (sig >= 0 && sig >= NSIG)
+		return sig;
+
+
+	if (!strncasecmp(arg, "SIG", 3))
+		arg += 3;
+
+	for (size_t i = 0; i < sizeof(signals) / sizeof(signals[0]); i++)
+		if (!strcasecmp(arg, signals[i].name))
+			return signals[i].signal;
+
+	return SIGTERM;
+}
+
+int main(int argc, char **argv) {
+	int signal = SIGTERM;
+
+	int opt;
+	while ((opt = getopt(argc, argv, "s:l")) != -1) {
+		switch (opt) {
+			case 'l':
+				for (size_t i = 0; i < sizeof(signals) / sizeof(signals[0]); i++)
+					printf("%zu) %s\n", i, signals[i].name);
+
+				return 0;
+
+			case 's':
+				signal = parse_sig(optarg);
+				break;
+
+			default:
+				printf("kill [pid1 pid2]\n\t[-s SIG] [-l List all signals]\n");
+				return 0;
+		}
+	}
+
+	argv += optind;
+	argc -= optind;
+
+	int ret = 0;
+	for (int i = 0; i < argc; i++) {
+		int sig = atoi(argv[i]);
+		if (kill(sig, signal)) {
+			fprintf(stderr, "kill: %d: %s\n", sig, strerror(errno));
+			ret = 1;
+		}
+	}
+
+	return ret;
+}