Lab 4

submission4.md

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+## Task 1: Configure and Use a Local Package Repository
+
+### 1. WSL:
+```shell
+wsl
+```
+
+### 2. Create a local repository and place VIM .deb package in it:
+```shell
+mkdir -p ~/local-apt-repo/
+cd ~/local-apt-repo/
+sudo wget http://archive.ubuntu.com/ubuntu/pool/main/v/vim/vim_8.2.3995-1ubuntu2_amd64.deb
+```
+![img.png](images/img.png)
+
+### 3. Generate the Package Index:
+```shell
+dpkg-scanpackages -m . > Packages
+```
+
+### 4. Add the Local Repository to Your Sources List:
+```shell
+echo "deb [trusted=yes] file:/home/bulat/local-apt-repo /" | sudo tee /etc/apt/sources.list.d/local-apt-repo.list
+sudo apt update
+```
+
+### 5. Change the priority of apt:
+```shell
+sudo nano /etc/apt/sources.list
+```
+**And add "deb [trusted=yes] file:/home/bulat/local-apt-repo /" on top of this file**
+
+### 6. Verify the Contents of the Packages.gz File:
+```shell
+cat Packages
+apt policy vim
+```
+![img_1.png](images/img_1.png)
+
+### 7. Remove and Install a Package from the Local Repository:
+```shell
+sudo apt remove vim
+sudo apt install vim=2:8.2.3995-1ubuntu2
+```
+![img_2.png](images/img_2.png)
+
+### 8. Install needed dependencies from Ubuntu Archive (as it's not our .deb file and we don't care)
+```shell
+sudo apt install vim-common=2:8.2.3995-1ubuntu2
+sudo apt install vim-runtime=2:8.2.3995-1ubuntu2
+```
+
+### 9. Install vim from our local repository:
+```shell
+sudo apt install vim=2:8.2.3995-1ubuntu2
+```
+![img_3.png](images/img_3.png)
+
+**...**
+
+## Task 2: Simulate Package Installation and Identify Dependencies
+
+```shell
+apt-cache showpkg vim
+```
+
+<details>
+<summary>Output</summary>
+
+```
+Package: vim
+Versions:
+2:8.2.3995-1ubuntu2.18 (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy-updates_main_binary-amd64_Packages) (/var/lib/apt/lists/security.ubuntu.com_ubuntu_dists_jammy-security_main_binary-amd64_Packages)
+ Description Language:
+                 File: /var/lib/apt/lists/_home_bulat_local-apt-repo_Packages
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+ Description Language: en
+                 File: /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy_main_i18n_Translation-en
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+ Description Language:
+                 File: /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy-updates_main_binary-amd64_Packages
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+
+2:8.2.3995-1ubuntu2 (/var/lib/apt/lists/_home_bulat_local-apt-repo_Packages) (/var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy_main_binary-amd64_Packages) (/var/lib/dpkg/status)
+ Description Language:
+                 File: /var/lib/apt/lists/_home_bulat_local-apt-repo_Packages
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+ Description Language: en
+                 File: /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy_main_i18n_Translation-en
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+ Description Language:
+                 File: /var/lib/apt/lists/archive.ubuntu.com_ubuntu_dists_jammy-updates_main_binary-amd64_Packages
+                  MD5: 59e8b8f7757db8b53566d5d119872de8
+
+
+Reverse Depends:
+  vim-ale,vim 2:8.1.0693-2~
+  vim-syntax-docker,vim
+  vim-syntax-docker,vim
+  vim-runtime,vim
+  vim-common,vim
+  ubuntu-wsl,vim
+  ubuntu-server,vim
+  exuberant-ctags,vim
+  x2gothinclient-chroot,vim
+  vim-voom,vim 2:8.1.0693-2~
+  vim-vader,vim 2:8.1.0693-2~
+  vim-tlib,vim
+  vim-textobj-user,vim
+  vim-tabular,vim
+  vim-syntax-docker,vim
+  vim-syntastic,vim
+  vim-subtitles,vim 2:8.1.0693-2~
+  vim-solarized,vim 2:8.1.0693-2~
+  vim-snippets,vim
+  vim-snipmate,vim
+  vim-scripts,vim 2:8.1.0693-2~
+  vim-redact-pass,vim 2:8.1.0693-2~
+  vim-rails,vim
+  vim-python-jedi,vim 2:8.1.0693-2~
+  vim-puppet,vim 2:8.1.0693-2~
+  vim-poke,vim 2:8.1.0693-2~
+  vim-migemo,vim
+  vim-ledger,vim 2:8.1.0693-2~
+  vim-latexsuite,vim
+  vim-latexsuite,vim
+  vim-lastplace,vim
+  vim-khuno,vim
+  vim-julia,vim
+  vim-icinga2,vim 2:8.1.0693-2~
+  vim-gitgutter,vim 2:8.1.0693-2~
+  vim-git-hub,vim 2:8.1.0693-2~
+  vim-fugitive,vim
+  vim-ctrlp,vim 2:8.1.0693-2~
+  vim-bitbake,vim
+  vim-autopep8,vim
+  byobu,vim
+  vim-airline-themes,vim
+  vim-airline,vim
+  vim-addon-mw-utils,vim
+  vim-addon-manager,vim
+  universal-ctags,vim
+  tpp,vim
+  supercollider-vim,vim
+  ocaml-tools,vim
+  lubuntu-desktop,vim
+  libvi-quickfix-perl,vim
+  imediff,vim
+  halibut,vim
+  gworkspace-apps-wrappers,vim
+  games-python3-dev,vim
+  games-c++-dev,vim
+  dnsvi,vim
+  debian-reference-common,vim
+  cif-tools,vim
+  biosyntax-vim,vim
+  bikeshed,vim
+  vim-runtime,vim
+  vim-common,vim
+  ubuntu-wsl,vim
+  ubuntu-server,vim
+  exuberant-ctags,vim
+Dependencies:
+2:8.2.3995-1ubuntu2.18 - vim-common (5 2:8.2.3995-1ubuntu2.18) vim-runtime (5 2:8.2.3995-1ubuntu2.18) libacl1 (2 2.2.23) libc6 (2 2.34) libgpm2 (2 1.20.7) libpython3.10 (2 3.10.0) libselinux1 (2 3.1~) libsodium23 (2 1.0.14) libtinfo6 (2 6) ctags (0 (null)) vim-doc (0 (null)) vim-scripts (0 (null))
+2:8.2.3995-1ubuntu2 - vim-common (5 2:8.2.3995-1ubuntu2) vim-runtime (5 2:8.2.3995-1ubuntu2) libacl1 (2 2.2.23) libc6 (2 2.34) libgpm2 (2 1.20.7) libpython3.10 (2 3.10.0) libselinux1 (2 3.1~) libsodium23 (2 1.0.14) libtinfo6 (2 6) ctags (0 (null)) vim-doc (0 (null)) vim-scripts (0 (null))
+Provides:
+2:8.2.3995-1ubuntu2.18 - editor (= )
+2:8.2.3995-1ubuntu2 - editor (= )
+Reverse Provides:
+vim-nox 2:8.2.3995-1ubuntu2.18 (= 2:8.2.3995-1ubuntu2.18)
+vim-gtk3 2:8.2.3995-1ubuntu2.18 (= 2:8.2.3995-1ubuntu2.18)
+vim-athena 2:8.2.3995-1ubuntu2.18 (= 2:8.2.3995-1ubuntu2.18)
+vim-nox 2:8.2.3995-1ubuntu2 (= 2:8.2.3995-1ubuntu2)
+vim-gtk3 2:8.2.3995-1ubuntu2 (= 2:8.2.3995-1ubuntu2)
+vim-athena 2:8.2.3995-1ubuntu2 (= 2:8.2.3995-1ubuntu2)
+```
+
+</details>
+
+```shell
+sudo apt-get install -s vim
+```
+
+<details>
+<summary>Output</summary>
+
+```shell
+Reading package lists... Done
+Building dependency tree... Done
+Reading state information... Done
+The following additional packages will be installed:
+  vim-common vim-runtime
+Suggested packages:
+  ctags vim-doc vim-scripts
+The following packages will be upgraded:
+  vim vim-common vim-runtime
+3 upgraded, 0 newly installed, 0 to remove and 54 not upgraded.
+Inst vim [2:8.2.3995-1ubuntu2] (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [amd64]) []
+Inst vim-runtime [2:8.2.3995-1ubuntu2] (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [all]) []
+Inst vim-common [2:8.2.3995-1ubuntu2] (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [all])
+Conf vim (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [amd64])
+Conf vim-runtime (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [all])
+Conf vim-common (2:8.2.3995-1ubuntu2.18 Ubuntu:22.04/jammy-updates, Ubuntu:22.04/jammy-security [all])
+
+```
+
+</details>
+
+As we saw in the previous step, requirements are vim-common and vim-runtime, of the same version, as vim. And also there are a lot of reverse depends.
+
+## Task 3: Hold and Unhold Package Versions
+
+### 1. Install a package
+```shell
+sudo apt install vim=2:8.2.3995-1ubuntu2
+```
+
+### 2. Hold a package
+```shell
+sudo apt-mark hold vim=2:8.2.3995-1ubuntu2
+```
+
+### 3. Verify the hold status
+```shell
+apt-mark showhold
+```
+
+### 4. Unhold the package
+```shell
+sudo apt-mark unhold vim=2:8.2.3995-1ubuntu2
+```
+### All command and outputs:
+![img_4.png](images/img_4.png)