Life Beyond Fife

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git•

add and remove (rm), checkout and reset

Git is a stickler for detail, but helpfully so. It tries not to do things unless you specifically tell it to. So if you make changes to the codebase, git won't include your changes unless you explicitly tell git that it's intended. For example, say you add a new file called myProg.c to your codebase, or edit an existing file called myProg.c, the intended change must be signalled to git using the add command. $ git add myProg.c Thankfully, git lets you add whole subdirectories easily enough with the add command so you can do multiple files in a one...

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checkout this branch
git•

checkout this branch

Welcome to one of the most easily confused git commands there is: checkout. Many people use the phrase, “Checkout the code” to mean “retrieve the latest copy of the code from the origin repo.” This is not the case (you retrieve the latest copy of the code with the pull command – see push and pull). [](/images/originals/05-gimp.png)As mentioned previously, any new independent work is added to its own branch and these are pushed and pulled to/from the origin repo. The checkout command is how you move from one branch to another. Only one branch can be active in git at...

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push and pull
git•

push and pull

The state of a codebase on a git server, whether an origin repo in a server or on someone's laptop, is represented by one or more branches. A commit is a self contained set of code changes (modifications, new, moved and deleted files) made by one developer. A branch is a chronological series of commits that stretches back in time from the most recent change to the beginning of the codebase i.e. the very first commit. The main branch that contains all developers' commits is named master by default. The word branch is appropriate as it fits with the tree...

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init, clone and origin
git•

init, clone and origin

Hopefully you, and the powers that be at your company, are convinced: git is the future and the way forward. We now begin the journey of understanding the ways in which git is different to server-client VCSs. We assume the user has already installed git and is familiar with navigating directories using the command line. init A git server can hold multiple code repositories known as repos. The simplest way to get started with git is to create a new directory with an empty repo. $ git init MyFirstRepo Congratulations. You created a git repo to hold the version changes...

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git•

End to Big Bang commits

No matter how agile we get, or small and isolated we try to make our changes, collaborative development will always leave us stepping on each other's toes. When there are big changes to the codebase to be made by multiple developers the key to victory is to selfishly make sure to get yours committed first, otherwise be left open to a three-way merge from hell. Git allows programmers to break-up the merge process into smaller manageable chunks. Having the power of the server on your client means that you don't have to wait until your commit is ready before merging...

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git•

Backup as often as you like

Have you ever experimented with a few different approaches to solving a tricky problem only later to try to salvage an earlier working state with a mixture of <Ctrl>+Z bashing and consulting the last known state in the VCS server? Or do you get round that by making occasional copies of files or subdirectories, possibly with "v1" suffixes? Well with git, there's a better way. You wouldn't commit code to the origin repo that was broken, incomplete or didn't pass all unit, integration and acceptance tests. And the same applies to the origin repo with DVCS as well. However, remember...

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