quick generation of exercise files

.gitignore

@@ -1,2 +1,6 @@
 *.swp
 tmp.*
+*.raw
+.mkosi*
+*.tgz
+*.img

advanced/learning_bash_scripting.md

@@ -1127,20 +1127,18 @@ If you did it with a prefix, now try with a postfix.
 
 # Coding challenge - Rename jpeg files
 
-Download [these](../assets/) files, which are all `jpeg` files.
+Download [these](../assets/jpeg_ext.tar) files, which are all `jpeg` files.
 The extensions however are not really uniform.
 Find the most common extension type and rename all files with that extension.
 
 # Coding challenge - Remove duplicate files
 
-Find all duplicate files and move them to a different directory.
+Find all duplicate files from [this](../assets/shasum.tar) and move them to a different directory.
 How certain are you that they are duplicates?
 
-TODO - shasum exercise
-
 # Coding challenge - File tree
 
-Download [this](../assets/) file and use the content of the directory to write me a program that prints the content as a tree structure.
+Download [this](../assets/tree.tar) file and use the content of the directory to write me a program that prints the content as a tree structure.
 You can be *creative* but it's interesting to learn how to perform these action by hand.
 As an extra challenge I would like you to add different behaviour to the script, depending on the input.
 For example, if the input file is a `tar.gz` file, the program will automatically uncompress and then show the tree.

assets/nspawn/full_bridged.yaml

@@ -21,6 +21,9 @@ actions:
       - htop
       - vim-nox
       - tmux
+      - grub-efi
+      - initramfs-tools
+      - linux-image-amd64
 
   - action: run
     description: enable essential systemd services
@@ -41,3 +44,51 @@ actions:
     file: {{ $image }}
     compression: gz
 
+  - action: image-partition
+    imagename: {{ $image }}.img
+    imagesize: 2GB
+    partitiontype: gpt
+    mountpoints:
+      - mountpoint: /
+        partition: root
+      - mountpoint: /boot/efi
+        partition: efi
+        flags: [ boot ]
+    partitions:
+      - name: efi
+        fs: vfat
+        start: 1MiB
+        end: 513MiB
+        options: [ x-systemd.automount ]
+        parttype: C12A7328-F81F-11D2-BA4B-00A0C93EC93B # ESP guid
+      - name: root
+        # parttype: 4F68BCE3-E8CD-4DB1-96E7-FBCAF984B709 # linux root x86_64
+        parttype: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 # linux partition
+        fs: ext4
+        start: 513MiB
+        end: 1999MB
+  
+  - action: filesystem-deploy
+    description: Deploying filesystem onto image
+    setup-kernel-cmdline: true
+    setup-fstab: true
+
+      #  - action: run
+      #    chroot: true
+      #    command: grub-install --target=x86_64-efi --no-nvram /dev/vda
+      #  
+      #  - action: run
+      #    chroot: true
+      #    command: update-grub
+      #
+      #  - action: run
+      #    chroot: true
+      #    command: mkdir -p /boot/efi/EFI/BOOT && cp /boot/efi/EFI/debian/grubx64.efi /boot/efi/EFI/BOOT/BOOTX64.EFI
+      #
+      #  - action: run
+      #    chroot: true
+      #    command: update-initramfs -u
+      #
+      #  - action: run
+      #    chroot: true
+      #    command: sed -i 's/vda/sda/g' /boot/grub/grub.cfg

assets/nspawn/mkosi.default

@@ -0,0 +1,18 @@
+[Distribution]
+Distribution=debian
+Release=bullseye
+
+[Output]
+Format=gpt_ext4
+Bootable=yes
+Output=image.raw
+
+[Packages]
+Packages=
+         openssh-client
+         vim-nox
+
+[Validation]
+Password=waldek
+
+