Include unistd.h and increase fasm memory

makefile

@@ -8,7 +8,7 @@ endif
 
 FASM_EXE ?= fasm
 FASM_INCLUDE=$(KOLIBRIOS)/kernel/trunk;$(KOLIBRIOS)/programs/develop/libraries/libcrash/hash
-FASM_FLAGS=-dUEFI=1 -dextended_primary_loader=1 -dUMKA=1 -dHOST=$(HOST)
+FASM_FLAGS=-dUEFI=1 -dextended_primary_loader=1 -dUMKA=1 -dHOST=$(HOST) -m 2000000
 
 CC ?= gcc
 WARNINGS_COMMON=-Wall -Wextra \

shell.c

@@ -25,6 +25,7 @@
 #include <stdlib.h>
 #include <stddef.h>
 #include <string.h>
+#include <unistd.h>
 #include <assert.h>
 #include <time.h>
 #include <errno.h>