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Home Page: http://metacpan.org/release/GitMeta
Read-only release history for GitMeta
Home Page: http://metacpan.org/release/GitMeta
###################################################################### GitMeta 0.05 ###################################################################### NAME GitMeta - Clone/update many Git repositories using Meta repos SYNOPSIS # use the command line interface gitmeta-update gitmeta-repo-loc meta.gmf /local/git/repo/dir DESCRIPTION GetMeta allows you to work on dozens of git repositories hosted on different servers, and update all of your local copies with a single command. It defines a new syntax, called GMF (git meta format), to configure many different remote git repository locations and provides a script, "gitmeta-update", to create local copies of all of these repos or updates them if they already exist. This is useful to * periodically update your local clones while you have an Internet connection going so they're up-to-date later when you're offline. * move to a new system and create clones of all of your favorite git repos with a single command. SIMPLE EXAMPLE For example, if you want to follow the Perl core developers on perl5.git.perl.org and also the Log4perl project on Github, simply put these lines into a new file "myrepos.gmf": # myrepos.gmf # Log4perl project - git://github.com/mschilli/log4perl.git # Perl core development - git://perl5.git.perl.org/perl.git Then, if you run gitmeta-update myrepos.gmf ~/my-git-repos the script will create clones of theses repos in the directory "~/my-git-repos" (it will ask to create it if it doesn't exist yet) or update them if they're already cloned but out-of-date: Updating git://perl5.git.perl.org/perl.git ... Updating git://github.com/mschilli/log4perl.git ... If you look your local "~/my-git-repos" directory, you now have clones of both projects, ready to use: $ ls ~/my-git-repos log4perl perl REMOTE GITMETA REPOS Having the meta configuration "myrepos.gmf" local on your box is nice for testing, but it's much more powerful to store it in a new repo somewhere on the Net, e.g. "github.com/mschilli/gitmeta-test" (this actually exists for your testing pleasure). Now, wherever you are, simply call gitmeta-update git://github.com/mschilli/gitmeta-test \ myrepos.gmf ~/my-git-repos and the script will go out and fetch the git meta configuration from github, process each entry, and create or update the corresponding repositories in your local git repo directory ("~/my-git-repos"). ADVANCED EXAMPLE If you want to follow all repositories of a given user (like yourself) on Github, or you want to clone all repositories in a given directory on your hosting service, it would be tiresome to constantly update your .gmf file when you create new repositories or remove retired ones. This is why GitMeta offers additional modules to automate this: "GitMeta::Github" Expands to all git repos of a given user on Github. Put # All github projects of user 'mschilli' - type: Github user: mschilli in your .gmf file (note the peculiar YAML syntax requiring indentation and an empty - line to define an array entry referencing a hash) then "gitmeta-update" will fetch a list of all Github projects of user "user" and add them to the processing list, before it starts cloning/updating those repos. "GitMeta::SshDir" Expands to all git repos in the given directory on a server via ssh. If you put # All projects in directory 'projects' # on some host via git/SSH - type: SshDir host: [email protected] dir: projects in your .gmf, then "gitmeta-update" will fetch a list of all repositories in the given directory on the given host and add them to the processing list. Requires ssh keys to be set up or you'll be prompted for your password. "GitMeta::GMF" You guessed it: You can refer to other .gmf files in other gitmeta repos, which "gitmeta-update" will dutifully follow. If you put - type: GMF repo: [email protected]:git/gitmeta gmf_path: privdev.gmf in your .gmf file, "gitmeta-update" will fetch the .gmf file "privdev.gmf" from [email protected]:git/gitmeta, process its directives and add the results to the processing list. This mechanism allows you to group repos into several meta repos and retrieve them separately or combined. For example, if you have your private repositories in "[email protected]:git/gitmeta/priv.gmf" and your public repos in "[email protected]:git/gitmeta/pub.gmf", you can write a .gmf file that fetches them all at once: # all.gmf - type: GMF repo: [email protected]:git/gitmeta gmf_path: priv.gmf - type: GMF repo: [email protected]:git/gitmeta gmf_path: pub.gmf If you put that file in [email protected]:git/gitmeta as well, all you need to do is run gitmeta-update [email protected]:git gitmeta/all.gmf ~/local-dir to get all repos created/updated. To combine all of the above, let's say that you're following several projects on Github.com, another set of git repositories located on a private hosting service, the perl core development on "perl5.git.perl.org", and another git meta definition in another gitmeta repo. You define the following .gmf file (in YAML format): # gitmeta.gmf # Perl core development - git://perl5.git.perl.org/perl.git # All github projects of user 'mschilli' - type: Github user: mschilli # All projects in directory 'projects' # on some host via git/SSH - type: SshDir host: [email protected] dir: projects # Private Project via git/SSH - [email protected]:git/private-project.git # Another .gmf file somewhere in another gitmeta repo - type: GMF repo: [email protected]:git/gitmeta gmf_path: privdev.gmf Note that in order to update a local repository, gitsync will fetch the remote changes, but won't merge them into the local clone. This is because there might be merge conflicts and when updating dozens of repos in one quick run, you don't want to be interrupted to resolve a conflicted merge. So, in git parlance, "gitsync" performs a "git fetch", not a "git pull". The updates will therefore be available in your locally defined remote branches, and if you want to merge them into the local branches, you need to run a "git merge" (you don't need an Internet connection for that, so you can do this later), e.g. use git merge origin/master to merge the changes in the 'master' branch of the 'origin' remote into the local branch you're currently on (presumably 'master' as well). TROUBLESHOOTING Make sure that 'git' is in your PATH. FIRST PUBLICATION This module was first published in the German edition of Linux Magazin in August 2010: http://www.linux-magazin.de/Heft-Abo/Ausgaben/2010/08/Ueberall-Projekte An English translation is available here: http://www.linux-magazine.com/w3/issue/118/050-055_perl.pdf LEGALESE Copyright 2010-2011 by Mike Schilli, all rights reserved. This program is free software, you can redistribute it and/or modify it under the same terms as Perl itself. AUTHOR 2010, Mike Schilli <[email protected]>
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