Jekyll2024-12-02T16:04:29+00:00http://luss.io/feed.xmlLUSS.IOPostgres and/or Linux things I always forget. And... perhaps other little anecdotes.Install Flatpak2024-12-02T05:00:00+00:002024-12-02T05:00:00+00:00http://luss.io/linux/2024/12/02/install-flatpakflatpak

Flatpak is a kewl way to install apps (usually GUI) on linux in a cross-platform way in a sandbox in your home directory.

Do the below on Ubuntu or Enterprise-linux systems. Simplest to reboot your system after the install so the Flathub Repo is recognized.

on Ubuntu

sudo apt install flatpak
sudo apt install gnome-software-plugin-flatpak
sudo flatpak remote-add https://dl.flathub.org/repo/flathub.flatpakrepo

on Rocky or Alama Linux

sudo dnf install flatpak
sudo flatpak remote-add --if-not-exists flathub https://dl.flathub.org/repo/flathub.flatpakrepo
]]>Using GIT Submodules2024-12-02T05:00:00+00:002024-12-02T05:00:00+00:00http://luss.io/linux/2024/12/02/using-git-submodulesgit-submodules

GIT submodules are a nifty way to nest sub-projects under a parent repo.

$ git clone https://github.com/luss/pgbin
Cloning into 'pgbin'...
warning: You appear to have cloned an empty repository.

$ cd pgbin
$ git submodule add https://github.com/pgedge/pgbin-build build
Cloning into '/home/denisl/dev/pgbin/build'...
remote: Enumerating objects: 1004, done.
remote: Counting objects: 100% (106/106), done.
remote: Compressing objects: 100% (18/18), done.
remote: Total 1004 (delta 93), reused 92 (delta 85), pack-reused 898 (from 1)
Receiving objects: 100% (1004/1004), 151.81 KiB | 6.07 MiB/s, done.
Resolving deltas: 100% (480/480), done.

$ git submodule add https://github.com/pgedge/cli cli
Cloning into '/home/denisl/dev/pgbin/cli'...
remote: Enumerating objects: 24771, done.
remote: Counting objects: 100% (911/911), done.
remote: Compressing objects: 100% (258/258), done.
remote: Total 24771 (delta 666), reused 880 (delta 644), pack-reused 23860 (from 1)
Receiving objects: 100% (24771/24771), 99.24 MiB | 39.67 MiB/s, done.
Resolving deltas: 100% (15571/15571), done.

$ git status
On branch main

No commits yet

Changes to be committed:
	new file:   .gitmodules
	new file:   build
	new file:   cli

$ git add .
$ git commit -m 'a sample repo with two submodules'
[main (root-commit) 9eda051] a sample repo with two submodules
 3 files changed, 8 insertions(+)
 create mode 100644 .gitmodules
 create mode 160000 build
 create mode 160000 cli

$ git push
Enumerating objects: 3, done.
Counting objects: 100% (3/3), done.

In older versions of the Git CLI, when you pull the repo you’ll need to run the below command (newer versions do this automagically) or your submodule directories will be empty:

git submodule update --init --recursive
]]>Timely Calendar Versioning2024-12-01T05:00:00+00:002024-12-01T05:00:00+00:00http://luss.io/linux/2024/12/01/timely-calendar-versioningcalver

CalVer is a versioning convention based on your project’s release calendar, instead of SemVer’s arbitrary numbers. As an example, Ubuntu uses a short year and a zero padded month for it’s main version ala 24.04 is their latests LTS release from April of 2024.

]]>Set Timezone2024-11-30T05:00:00+00:002024-11-30T05:00:00+00:00http://luss.io/linux/2024/11/30/set-timezonetime-zones

$ sudo timedatectl set-timezone America/New_York

To figure out the time zone in Paris use the following command:

$ timedatectl list time-zones | grep -i paris
Europe/Paris
]]>Install Jekyll2024-11-26T17:26:00+00:002024-11-26T17:26:00+00:00http://luss.io/linux/2024/11/26/install-jekyllruby-jekyll

I’m using Jekyll and it’s default Minima Theme for this blog site to KeepItSimple:

sudo apt-get install ruby-full build-essential zlib1g-dev

echo '# Install Ruby Gems to ~/gems' >> ~/.bashrc
echo 'export GEM_HOME="$HOME/gems"' >> ~/.bashrc
echo 'export PATH="$HOME/gems/bin:$PATH"' >> ~/.bashrc
source ~/.bashrc

gem install jekyll bundler

## necessary for using MINIMA
gem install minima jekyll-feed addressable i18n webrick jekyll-seo-tag public_suffix concurrent-ruby bigdecimal rake
]]>Cleaning APT Cache2024-11-26T12:14:00+00:002024-11-26T12:14:00+00:00http://luss.io/linux/2024/11/26/cleaning-APT-cacheclean-apt-cache

sudo apt-get purge PACKAGE
sudo apt-get clean
]]>Installing Docker CE on EL & Ubuntu2024-09-14T05:00:00+00:002024-09-14T05:00:00+00:00http://luss.io/linux/2024/09/14/install-docker-CEdocker-ce

on EL based systems:

sudo yum install -y yum-utils device-mapper-persistent-data lvm2
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
sudo yum install -y docker-ce docker-ce-cli containerd.io

sudo systemctl enable docker
sudo systemctl start docker
sudo usermod -aG docker $USER

on Debian/Ubuntu based systems:

sudo apt-get -y update
sudo apt-get install -y ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
$(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update -y

sudo apt-get install -y docker-ce docker-ce-cli
sudo apt-get install -y containerd.io docker-buildx-plugin docker-compose-plugin
]]>Podman Rising2024-05-25T17:00:00+00:002024-05-25T17:00:00+00:00http://luss.io/linux/2024/05/25/podman-risingpodman-rocks

Podman is on the rise for sure.

Use a recent version of Linux (such as EL9 or Ubuntu 24.04) to do the install.

sudo yum install podman podman-compose

or

apt install podman podman-compose

The new Podman Desktop is pretty kewl also.

]]>Forking a GIT Repo with all Branches2023-11-15T17:00:00+00:002023-11-15T17:00:00+00:00http://luss.io/linux/2023/11/15/forking-a-repo-with-all-branchesforking-a-repo

git clone --mirror git@myhost:mybackup.git mybackup/.git
cd mybackup
git config --bool core.bare false
]]>Cleaning YUM Cache2023-11-14T17:00:00+00:002023-11-14T17:00:00+00:00http://luss.io/linux/2023/11/14/cleaning-up-yum-cacheclean-yum-cache

sudo yum clean packages
sudo yum clean metadata
sudo yum clean dbcache
sudo yum clean all
sudo yum makecache
]]>