diff --git a/build.sh b/build.sh
index 65c3515..9ed22bb 100755
--- a/build.sh
+++ b/build.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 PROJECT_DIR=$(pwd)
-CFLAGS="-Wall -Wextra -I$PROJECT_DIR -I$PROJECT_DIR/include/libmu -lm"
+CFLAGS="-pedantic -s -Os -Wall -Wextra -I$PROJECT_DIR -I$PROJECT_DIR/include/libmu -lm"
 projects="console-tools coreutils sysutils sysutils-linux findutils networking miscutils shell loginutils procps"
 CC=cc
 
diff --git a/src/coreutils/ls/ls.c b/src/coreutils/ls/ls.c
index df54ba8..81797b7 100644
--- a/src/coreutils/ls/ls.c
+++ b/src/coreutils/ls/ls.c
@@ -25,6 +25,7 @@ unsigned int R_flag;
 unsigned int d_flag;
 unsigned int L_flag;
 unsigned int h_flag;
+unsigned int i_flag;
 unsigned int p_flag;
 
 struct d_node {
@@ -187,14 +188,16 @@ int print(const struct d_node *node) {
 		color = LS_EXE_COLOR;
 	}
 
+	int ret = 0;
+	if (i_flag)
+		ret += printf("%7ju ", (uintmax_t)node->stats.st_ino);
 
 	/* Output */
 	if (c_flag && p_flag)
 		printf("%s", color);
 
-	int ret = 0;
 	if (!l_flag)
-		ret = printf("%s%c ", node->name, (F_flag) ? suf : 0);
+		ret += printf("%s%c ", node->name, (F_flag) ? suf : 0);
 
 	if (l_flag) {
 		putchar(ind);
@@ -214,10 +217,10 @@ int print(const struct d_node *node) {
 		char *gr_name = (gr != 0) ? gr->gr_name : "nobody";
 		char *pw_name = (pw != 0) ? pw->pw_name : "nobody";
 		if (h_flag)
-			ret = printf(" %s %s %6s %s %s%c", pw_name, gr_name, mu_humansize(node->stats.st_size), date, node->name, (F_flag) ? suf : 0);
+			ret += printf(" %s %s %6s %s %s%c", pw_name, gr_name, mu_humansize(node->stats.st_size), date, node->name, (F_flag) ? suf : 0);
 
 		else
-			ret = printf(" %s %s %10jd %s %s%c", pw_name, gr_name, (uintmax_t)node->stats.st_size, date, node->name, (F_flag) ? suf : 0);
+			ret += printf(" %s %s %10jd %s %s%c", pw_name, gr_name, (uintmax_t)node->stats.st_size, date, node->name, (F_flag) ? suf : 0);
 	}
 
 	if (c_flag && p_flag)
@@ -235,6 +238,9 @@ void col_print(struct d_node **node, size_t files, struct winsize w) {
 
 	/* Calc */
 	maxlen += 3;
+	if (i_flag)
+		maxlen += 10;
+
 	size_t ncols = w.ws_col / maxlen;
 	size_t nrows = files;
 	if (ncols > 1) {
@@ -315,7 +321,7 @@ int ls(const char *dir_name, int label, struct winsize w) {
 
 int main(int argc, char **argv) {
 	int opt;
-	while ((opt = getopt(argc, argv, "1alFcRdLh")) != -1) {
+	while ((opt = getopt(argc, argv, "1alFcRdLhi")) != -1) {
 		switch (opt) {
 			case '1':
 				O_flag = 1;
@@ -355,8 +361,12 @@ int main(int argc, char **argv) {
 				h_flag = 1;
 				break;
 
+			case 'i':
+				i_flag = 1;
+				break;
+
 			default:
-				printf("ls [dir1 dir2...]\n\t[-a Show hidden files]\n\t[-l Use a long listing format]\n\t[-F Append indicator to names]\n\t[-c Color mode] [-R Recursive]\n\t[-1 One column] [-d Print only dir names]\n\t[-L Follow symlinks]\n\t[-h Sizes in human readable format]\n");
+				printf("ls [dir1 dir2...]\n\t[-a Show hidden files]\n\t[-l Use a long listing format]\n\t[-F Append indicator to names]\n\t[-c Color mode] [-R Recursive]\n\t[-1 One column] [-d Print only dir names]\n\t[-L Follow symlinks]\n\t[-h Sizes in human readable format]\n\t[-i Listen inodes]\n");
 				return 0;
 		}
 	}
diff --git a/src/sysutils/mount/mount.c b/src/sysutils/mount/mount.c
index b508a16..474cd6a 100644
--- a/src/sysutils/mount/mount.c
+++ b/src/sysutils/mount/mount.c
@@ -11,9 +11,6 @@ int do_mount(const char *src, const char *dst, const char *fs_type, unsigned lon
 #if defined(__linux__)
 	int ret = mount(src, dst, fs_type, opt, NULL);
 
-#elif defined(__plainos__)
-	int ret = mount(src, dst, fs_type, opt);
-
 #else
 	int ret = -1;