Adding compilation for liblzma and grub

kernel/from_current.sh

@@ -1,3 +1,9 @@
+
+if [ "$EUID" = 0 ]
+then echo "Please don't run this as root"
+    exit
+fi
+
 if [ ! -d src ]
 then
     wget https://cdn.kernel.org/pub/linux/kernel/v5.x/linux-5.15.5.tar.xz
@@ -13,6 +19,7 @@ then
 
 fi
 cd src
+# make clean qui supprime le .config
 make mrproper
 cp ../.config .config
 make -j$(nproc) bzImage