diff --git a/ChangeLog b/ChangeLog
index 317677c..a847e59 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -86,6 +86,7 @@ IDT Overhaul
 	* RTC : basic timer wait()
 
 2019-05-08  @os-k-team <os-k-team@os-k.eu>
-	* Shell : basic shell that can beep, scroll up, scroll down and shutdwn
+	* Shell : basic shell that can beep, scroll up, scroll down and shutdwn, and
+		with a help command.
 	* Power management : implementation of shutdown on qemu, virtualbox etc
 	* Terminal : actual scroll up and down
diff --git a/Makefile b/Makefile
index 2617155..aaed139 100644
--- a/Makefile
+++ b/Makefile
@@ -144,6 +144,8 @@ $(KOBJDIR)/libc/mem.o: $(KALEIDDIR)/libc/mem.c $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
 	@$(KCC) -fno-strict-aliasing $< -o $@
 	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
 
+## MISC MAKEFILE ------------------------------------------------------------- #
+
 $(KOBJDIR)/kernel/cpu/idt.o: $(KALEIDDIR)/kernel/cpu/idt.c \
 	$(KALEIDDIR)/kernel/cpu/isr.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
 	@mkdir -p $(shell dirname $@)
@@ -153,6 +155,15 @@ $(KOBJDIR)/kernel/cpu/idt.o: $(KALEIDDIR)/kernel/cpu/idt.c \
 	@rm -f $@.1 $@.2
 	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
 
+$(KOBJDIR)/kernel/cpu/cpuid.o: $(KALEIDDIR)/kernel/cpu/cpuid.c \
+	$(KALEIDDIR)/kernel/cpu/cpuf.asm $(INCLUDEDIR)/*/*.h | $(KOBJDIR)
+	@mkdir -p $(shell dirname $@)
+	@$(ASM) $(ASMFLAGS) $(KALEIDDIR)/kernel/cpu/cpuf.asm -o $@.1
+	@$(KCC) $< -o $@.2
+	@$(LD) $(LDFLAGS) -r $@.1 $@.2 -o $@
+	@rm -f $@.1 $@.2
+	@echo ${CL2}[$@] ${CL}Compiled.${CL3}
+
 ## MAIN MAKEFILE ------------------------------------------------------------- #
 
 $(KOBJDIR)/%.o: %.c $(INCLUDEDIR)/*/*.h $(KALEIDDIR)/*/*/*.h | $(KOBJDIR)
diff --git a/ProjectTree b/ProjectTree
index 9abb272..70b5e50 100644
--- a/ProjectTree
+++ b/ProjectTree
@@ -76,6 +76,7 @@
 │   │       │   ├── ke
 │   │       │   │   ├── log.o
 │   │       │   │   ├── panic.o
+│   │       │   │   ├── shcmds.o
 │   │       │   │   └── shell.o
 │   │       │   ├── mm
 │   │       │   │   ├── gdt.o
@@ -109,8 +110,6 @@
 │   │           ├── string.o
 │   │           └── strtol.o
 │   ├── grub.log
-│   ├── kaleid32_disasm.asm
-│   ├── kaleid64_disasm.asm
 │   └── kernel.ld
 ├── include
 │   ├── base
@@ -136,6 +135,7 @@
 │   │   ├── heap.h
 │   │   ├── idt.h
 │   │   ├── iomisc.h
+│   │   ├── keyboard.h
 │   │   ├── mboot.h
 │   │   ├── mm.h
 │   │   ├── proc.h
@@ -172,7 +172,9 @@
 │   │   ├── ke
 │   │   │   ├── log.c
 │   │   │   ├── panic.c
-│   │   │   └── shell.c
+│   │   │   ├── shcmds.c
+│   │   │   ├── shell.c
+│   │   │   └── shell.h
 │   │   ├── mm
 │   │   │   ├── gdt.c
 │   │   │   ├── heap.c
@@ -207,8 +209,10 @@
 ├── AUTHORS
 ├── ChangeLog
 ├── COPYING
+├── kaleid32_disasm.asm
+├── kaleid64_disasm.asm
 ├── Makefile
 ├── ProjectTree
 └── README.md
 
-39 directories, 147 files
+39 directories, 151 files
diff --git a/kaleid/kernel/cpu/cpuf.asm b/kaleid/kernel/cpu/cpuf.asm
new file mode 100644
index 0000000..c5bff22
--- /dev/null
+++ b/kaleid/kernel/cpu/cpuf.asm
@@ -0,0 +1,23 @@
+;=----------------------------------------------------------------------------=;
+;                            GNU GPL OS/K                                      ;
+;                                                                              ;
+;   Desc: CPU management related functions                                     ;
+;                                                                              ;
+;                                                                              ;
+;   Copyright © 2018-2019 The OS/K Team                                        ;
+;                                                                              ;
+;   This file is part of OS/K.                                                 ;
+;                                                                              ;
+;   OS/K is free software: you can redistribute it and/or modify               ;
+;   it under the terms of the GNU General Public License as published by       ;
+;   the Free Software Foundation, either version 3 of the License, or          ;
+;   (at your option) any later version.                                        ;
+;                                                                              ;
+;   OS/K is distributed in the hope that it will be useful,                    ;
+;   but WITHOUT ANY WARRANTY; without even the implied warranty of             ;
+;   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              ;
+;   GNU General Public License for more details.                               ;
+;                                                                              ;
+;   You should have received a copy of the GNU General Public License          ;
+;   along with OS/K.  If not, see <https://www.gnu.org/licenses/>.             ;
+;=----------------------------------------------------------------------------=;