askubuntu

• Article: why-use-electron-alternative
• Web: neutralino.js.org
• Git: neutralinojs/neutralinojs

Neutralinojs is a lightweight cross-platform desktop application development framework written in C/C++. Similar to Tauri, Neutralino motivates developers to use any frontend framework to build the GUI of the application. It also offers a JavaScript API for native operations similar to Electron.

Let’s write a simple cross-platform application with Neutralino.

Installation

Neutralino doesn’t require any additional libraries for application development. All you need to do is install its CLI on any operating system:

$ npm install -g @neutralinojs/neu

Development

A fresh Neutralino application can be created using the following command:

$ neu create neutralino-app

The above command will create a new project by downloading the prebuilt JavaScript template. It will also download the latest prebuilt Neutralinojs binaries for each operating system. The main view (app/index.html) of this example application has the following content:

<h1 style="padding-top: 45vh; text-align: center;" >Hello Neutralinojs!</h1>

The application can be launched by simply entering the neu run command.

Releasing a Neutralinojs app

We can release our application for others by entering neu build command. The command will make binaries inside the dist directory.

Neutralino doesn’t offer single binary creation support as Tauri does. It will always create a single resource file along with the platform-specific binary.

How to make a backup patriot clone.

You need partclone.[PARTITON] ex. partclone.ntfs | partclone.ext4.. It copies partitions without zero sectors.

partclone.org

Backup partition example:

partclone.ext4 -c -s /dev/sda1 -o dir_with_backups/sda1.img

-c copy mode
-s source (what to backup)
-o output (where to backup)

Restore partition example:

partclone.ext4 -r -o /dev/sda1 -s dir_with_backups/sda1.img

-r recover mode

Ex. given by docker group.

If you want to avoid typing sudo whenever you run the docker command, add your username to the docker group:

sudo usermod -aG docker ${USER}

To apply the new group membership, log out of the server and back in, or type the following:

su - ${USER}

You will be prompted to enter your user’s password to continue.

Answer at superuser

You have to do the following steps:

1. Run defrag in the guest (Windows only)

2. Nullify free space:
   With a Linux Guest run this:

   dd if=/dev/zero of=/var/tmp/bigemptyfile bs=4096k ; rm /var/tmp/bigemptyfile

   or

   telinit 1
   mount -o remount,ro /dev/sda1
   zerofree -v /dev/sda1

   With a Windows Guest, download SDelete from Sysinternals and run this:

   sdelete.exe c: -z

   (replace C: with the drive letter of the VDI)

3. Shutdown the guest VM
4. Now run VBoxManage's modifymedium command with the --compact option:
   With a Linux Host run this:

   vboxmanage modifymedium --compact /path/to/thedisk.vdi

   With a Windows Host run this:

   VBoxManage.exe modifymedium --compact c:\path\to\thedisk.vdi

   With a Mac Host run this:

   VBoxManage modifymedium --compact /path/to/thedisk.vdi

This reduces the vdi size.