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4 min readTo use YAML files with Vagrant, you can define your virtual machine configurations in a separate YAML file instead of writing them directly in the Vagrantfile. This can make your Vagrantfile cleaner and more organized.To use a YAML file with Vagrant, you need to create a new YAML file (e.g., config.yml) and define your virtual machine configurations in this file using appropriate YAML syntax. You can include configurations such as box, hostname, network settings, provisioners, etc.
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4 min readThe "sh" function in Groovy is used to execute shell commands directly from the Groovy script. It allows for interacting with the command line, running external programs, and performing system operations. The "sh" function takes a String parameter containing the command to be executed and returns the output of the command as a String. This function is often used when a Groovy script needs to run system commands or perform actions that require using the shell.
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7 min readTo create an .exe file from an Elixir project, you can use tools like Exrm or Distillery. These tools allow you to generate a release package that includes all necessary dependencies and configurations in a standalone executable file.First, you need to add the chosen tool (Exrm or Distillery) to your project's dependencies in the mix.exs file. Then, you will need to configure the tool to build the release for the desired platform (e.g. Windows).
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6 min readTo use Ansible with Vagrant locally, you first need to ensure that both Ansible and Vagrant are installed on your machine. You can then create a Vagrantfile to define the virtual machine configuration and provisioning. Within the Vagrantfile, you can specify the Ansible provisioner, which allows you to run Ansible playbooks to configure the virtual machine.You will also need to create an Ansible playbook to define the tasks that you want to run on the virtual machine.
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6 min readTo make a patch HTTP request in Groovy, you can use the third-party library HTTPBuilder. This library allows you to easily send HTTP requests and handle responses in a Groovy script. First, you will need to include the HTTPBuilder library in your Groovy script by adding the following import statement at the beginning of your script: import groovyx.net.http.HTTPBuilder Next, you can create an instance of the HTTPBuilder class and use it to send a patch request.
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7 min readTo run the sleep command in a Vagrantfile, you can simply add the command within the provision block of the Vagrant configuration. The sleep command can be used to pause the execution of scripts or commands for a specified amount of time. For example, to make the Vagrant machine sleep for 60 seconds, you can add the following line within the provision block:config.vm.
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6 min readIn Elixir, you can truncate a string using the String.slice/2 function. This function takes two arguments: the string to be truncated and the maximum length of the truncated string. Here's an example of how to use it: string = "This is a long string that needs to be truncated" truncated_string = String.slice(string, 0..10) IO.puts truncated_string In this example, the String.slice/2 function is used to truncate the original string to 10 characters.
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4 min readIn Groovy, global variables can be accessed simply by referring to them by their name throughout the code. Global variables are defined outside of any functions or blocks in the script and can be accessed from any part of the script. To access global variables, simply use the variable name directly in the code without any additional qualifications or prefixes. This allows for easy and convenient access to shared data throughout the Groovy script.
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3 min readWhen running the command "vagrant destroy," any tasks that need to be executed before destroying the virtual machine can be added by using the "v.destroy" provisioner within the Vagrantfile. This provisioner allows you to define tasks that will be run before destroying the virtual machine. This can be useful for tasks such as cleaning up files or database entries before the machine is destroyed. By adding the v.
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6 min readTo get data from an XML file using Groovy, you can use the XmlSlurper class provided in Groovy. XmlSlurper allows you to parse and navigate through XML documents easily.You can create an instance of XmlSlurper by passing the XML file as an argument to its constructor. Once you have the XmlSlurper object, you can use its methods like children(), depthFirst(), find(), etc., to navigate through the XML document and retrieve the desired data.
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4 min readTo gracefully restart an Elixir app, you can use the System module to send a signal to the running application, forcing it to shut down and restart. This can be done by calling System.restart/0 or System.halt/1 function. Additionally, you can implement a callback in your supervision tree to handle the graceful shutdown of processes before restarting the app. This ensures that all processes are properly cleaned up before the restart, preventing any potential issues.