I don’t know about you, but I have on a lot of different places a directory called ‘hg’ with lot of different mercurial clones inside. Whether on the home of my several computers for my own projects, or inside other directories for external projects, and so on.
Now, remember one important aspect of distributed source control : your clone is actually both a repository and a working directory. This is why you usually (git and others do the same) have two different commands : one to synchronize the repository (pull) and one to update the working directory (update).
Updating comes with a risk : you can have conflicts. This is why I never update a svn repository without thinking first (do I have local modifications ?). But pulling is a lot less problematic. And, especially on my laptop, I often want to ‘sync them all’ as soon as I have some internet connection. Until now i had a script syncall with the path of all (svn,unison and) mercurial repositories hardcoded. This does not scale, and I now need that in at least 5 different places. I dont feel like maintaining such scripts.
And now comes the magic alias that made my day. I’m usually lame at shell scripting, so I’m sure there are better ways. But it works, now, on my computer. And this is so useful.
alias hgbulk '\ls */.hg -d | cut -d\/ -f1 | xargs -i bash -c "(cd {}; hg pull )"'
(yes, I use tcsh, but i’ve tested that in bash too. Don’t ask why I use tcsh.)
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