The general gist is a basic introduction to both git and github, for developers who are already using version control (i.e. cvs or svn) but have yet to try distributed version control tools such as git.

I’ve seen things like this posted on the net before but never really had a chance to play with the idea. But as I’m now using git and svn a lot more these days (fingers crossed i’ll be totally free of cvs soon!) I thought it was about time I pulled my finger out.

So here’s the end goal, in a normal directory, we just get a normal bash promt, but in a directory controlled by git or svn, we also get an addition telling us the source control tool in use and the current branch:

So, fire up yer terminal and add the following to your .profile, .bash_profile or .bashrc (whichever one you use):

parse_git_branch () {
	git name-rev HEAD 2> /dev/null | sed 's#HEAD\ \(.*\)# (git::\1)#'
}
parse_svn_branch() {
	parse_svn_url | sed -e 's#^'"$(parse_svn_repository_root)"'##g' | awk '{print " (svn::"$1")" }'
}
parse_svn_url() {
	svn info 2>/dev/null | sed -ne 's#^URL: ##p'
}
parse_svn_repository_root() {
	svn info 2>/dev/null | sed -ne 's#^Repository Root: ##p'
}
 
BLACK="\[\033[0;38m\]"
RED="\[\033[0;31m\]"
RED_BOLD="\[\033[01;31m\]"
BLUE="\[\033[01;34m\]"
GREEN="\[\033[0;32m\]"
 
export PS1="$BLACK[ \u@$RED\h $GREEN\w$RED_BOLD\$(parse_git_branch)\$(parse_svn_branch)$BLACK ] "

Simples. Now just open up a new terminal and move into a project directory using svn or git.

I have a dream wherein future developers don’t even have to install Git for themselves in order to be able to use it. Apple has shown a very forward thinking attitude towards shipping OS X with various programming languages and version control systems. Right now is a critical time in which we can help push to have Git preinstalled on the next version of their operating system. The more people that use Git, the better the ecosystem becomes, and removing the installation barrier is a big step in that direction.

I’m told, on good authority, that the best way to make this happen is to let Apple know that it’s something we desire. So if you’d like to be able to fire up a fresh Mac and type git without ever installing it, open a ticket on Apple’s bug reporting site:

http://bugreporter.apple.com

Let them know that you’re using Git on your mac, and that you’d love to see it shipped with the next version of OS X so that even more developers can experience the joy of distributed version control!

via Github