To connect to a Git repository with authentication over HTTP(S), every time it needs to set a username and password. You can configure Git to remember a username and password by storing them in a remote URL or by using Git credential helper. In this article i am showing how to clone Git repository by […]
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Pip – Install Specific Version of a Package
By default, the pip install command installs the latest version of a package. However, it is often necessary to install an old version of a package to much some specific requirements. In this post i am showing how to install the specific version of a package using the pip install command.
Git – Create New Branch
Instead of committing directly in local master branch, a good developer creates a new branch each time he starts working on a new bug or feature. To create a new branch there is a git branch command. Below i will show the examples of how to create a new local branch in Git from another […]
Windows: Set Environment Variable – CMD & PowerShell
What is an environment variable in Windows? An environment variable is a dynamic “object” containing an editable value which may be used by one or more software programs in Windows. In this note i am showing how to set an environment variable in Windows from the command-line prompt (CMD) and from the Windows PowerShell. In […]
Windows: Grep Equivalent – CMD & PowerShell
The grep command in Linux is widely used for parsing files and searching for useful data in the outputs of different commands. The findstr command is a Windows grep equivalent in a Windows command-line prompt (CMD). In a Windows PowerShell the alternative for grep is the Select-String command. Below you will find some examples of […]
Windows: List Environment Variables – CMD & PowerShell
What is an environment variable in Windows? An environment variable is a dynamic “object” containing an editable value which may be used by one or more software programs in Windows. In this note i am showing how to list environment variables and display their values from the Windows command-line prompt and from the PowerShell.
Jenkins: Credentials Plugin – Decrypt Password
Jenkins credentials plugin hides secrets like passwords and SSH or API keys by encrypting them. Nevertheless these credentials can be decrypted and printed in a plain text. In this note i will show 2 ways of how to decrypt secrets masked by Jenkins credentials plugin.
Ansible Debug: Print Variable & List All Variables – Playbook
During Ansible playbook debugging it is useful to know how to display host facts or registered variables. To print a message from Ansible playbook, as well as a value of a variable, we can use Ansible debug module. In the examples below i am showing how to print particular Ansible variables and how to list […]
Jenkins Pipeline: How to Define a Variable – Jenkins Variables
Variables in a Jenkinsfile can be defined by using the def keyword. Such variables should be defined before the pipeline block starts. When variable is defined, it can be called from the Jenkins declarative pipeline using ${…} syntax.
Jenkins Pipeline: Conditionally Define Variables – Groovy Script
The Groovy scripting language supports conditional structures, that can be used in Jenkins pipelines. Assume that you have a parametrized Jenkins job and in a Jenkinsfile you have a variable that should be defined depending on provided parameters. Here is an example of how to conditionally define variables in a Jenkins pipeline using the Groovy […]