1. What Problem We Hit A Jenkins build log threw an error: 1 2 3 4 5 6 Started by user admin Lightweight checkout support not available, falling back to full checkout. Checking out git https://github.com/shaowenchen/pipeline-test.git into /var/jenkins_home/workspace/abc@script to read Jenkinsfile ... ... Unable to access '.git/index.lock': File exists. Cause analysis:

1. Pages GitHub, GitLab, Bitbucket and others all offer a free static page hosting service called Pages. With the Pages service you can publish documentation, blogs, and more. Taking GitHub as an example, using Pages usually takes just a few simple steps: Create a new project: [username].github.io Commit static html

Compiled from the “Development Tips” series, gathering practices around Git collaboration and development environment setup. 1. warning: LF will be replaced by CRLF Windows, Linux, and Mac are inconsistent in how they mark line endings in files. Windows uses CRLF as the terminator, while Linux and Mac use LF. Git

1. Basic Concepts Workspace: the working area, the project files Index: the staging area, also called the pending-commit area; before a commit enters the repo, all updates are placed in the staging area Local Repository: the local repo, the version repository kept locally; HEAD points at the current development branch

This article is built around Git, the tool that controls all of our source code. 1. Why Git? For an in-depth discussion of the pros and cons of git versus centralized source control systems, see here. There has been far too much heated argument on this subject. As a developer, I currently prefer Git over other tools.