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Mercurial: Modern Source Control Management
- 1. Mercurial Modern Source Control Management John Paulett April 5, 2010
- 2. Overview CVS Issues Modern Alternatives Distributed Version Control Mercurial Next Steps
- 3. CVS Shortcomings Network connectivity required Lack of support for renaming/moving Lack of atomic commits Single point of failure Expensive branch operations Day-long merges 2010.04.05 3
- 4. CVS Replacements Subversion (2000) - svn ● “CVS done right” Git (2005) – git ● Created by Linus Torvalds for kernel development Mercurial (2005) – hg ● Created after Linux-Bitkeeper incident Bazaar, darcs, monotone ... 2010.04.05 4
- 5. Distributed Version Control (DVCS) Complete, local repository Branching & merging are trivial Central server for sharing repositories 2010.04.05 5
- 6. Mercurial mercurial.selenic.com Changesets, not files Mozilla, OpenJDK, OpenSolaris, Python, Zen, OpenOffice, NetBeans 2010.04.05 6
- 7. Create a new repository $ hg init demo $ cd demo $ ls -a . .. .hg 2010.04.05 7
- 8. Add a file $ echo "Hello world" > README $ hg add README $ hg status A README 2010.04.05 8
- 9. Commit the changeset $ hg commit -m "Adding basic README" $ hg log 0[tip] 9b1b9c995571 2010-01-13 12:37 -0600 jpaulett Adding basic README 2010.04.05 9
- 10. Push to remote repository $ hg push ssh://hg@bitbucket.org/nrg/demo/ pushing to ssh://hg@bitbucket.org/nrg/demo/ searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files ... 2010.04.05 10
- 11. Clone Existing Repository $ hg clone http://bitbucket.org/nrg/demo/ destination directory: demo requesting all changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 2010.04.05 11
- 12. Get Updates $ hg pull pulling from https://johnpaulett@bitbucket.org/nrg/demo/ searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (run 'hg update' to get a working copy) $ hg update 1 files updated, 0 files merged, 0 files removed, 0 files unresolved 2010.04.05 12
- 13. Workflow Multiple workflows are possible “Integration Manager” blessed developer developer repository public public integration developer developer manager private private 2010.04.05 http://whygitisbetterthanx.com/#any-workflow 13
- 14. Workflow mainline john cnda 1.4.1 changeset repository tag 1.4.2 2010.04.05 14
- 15. Hosting bitbucket.org Self-hosted via Apache & SSH ● hg.xnat.org Google Code / Sourceforge 2010.04.05 15
- 16. Tools $ hg MercurialEclipse TortoiseHg CuteHg 2010.04.05 16
- 17. Resources mercurial.selenic.com hgbook.red-bean.com hginit.com 2010.04.05 17
- 18. Resources http://nrg.wikispaces.com/Mercurial http://betterexplained.com/articles/intro-to-distributed- version-control-illustrated/ http://code.google.com/p/support/wiki/DVCSAnalysis 2010.04.05 18
- 19. hg Advantages Easy learning curve coming from CVS/SVN Allows 3rd parties to more easily contribute No more day long merges 2010.04.05 19
- 20. Next Steps Try out Mercurial: ● bitbucket.org/nrg 2010.04.05 20
- 21. 2010.04.05 21