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List remote Git branches and the last commit's author and author date for each branch. Sort by most recent commit's author date.
# Credit http://stackoverflow.com/a/2514279
for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ai %ar by %an" $branch | head -n 1` \\t$branch; done | sort -r
# Example output (resulting from running command on the Rails repo — https://github.com/rails/rails)
2012-06-20 14:21:23 -0700 3 weeks ago by Aaron Patterson origin/master
2012-06-17 01:23:02 -0700 4 weeks ago by José Valim origin/3-2-stable
2012-06-15 20:36:09 +0200 4 weeks ago by Piotr Sarnacki origin/actionview-extraction
2012-06-14 10:55:30 -0700 4 weeks ago by Aaron Patterson origin/3-1-stable
2012-06-12 20:05:46 -0700 4 weeks ago by Aaron Patterson origin/3-0-stable
2012-05-29 10:40:14 +0200 6 weeks ago by Piotr Sarnacki origin/cat-gemfile-test
2012-05-27 14:01:44 +0200 7 weeks ago by Piotr Sarnacki origin/helpers-order-fixes
2012-05-27 01:47:37 +0200 7 weeks ago by Piotr Sarnacki origin/possible-railties-fix
2012-03-29 06:26:32 -0700 4 months ago by Xavier Noria origin/2-3-stable
2012-03-02 15:01:20 +0100 4 months ago by Sergey Nartimov + José Valim origin/opt_routes
2011-11-25 09:49:54 +0000 8 months ago by José Valim origin/serializers
2011-06-16 12:08:26 -0700 1 year, 1 month ago by wycats origin/compressor
2011-05-24 16:03:41 -0700 1 year, 2 months ago by wycats origin/sass-cleanup
2011-01-13 15:42:28 +1300 1 year, 6 months ago by Michael Koziarski origin/2-1-stable
2011-01-13 15:33:38 +1300 1 year, 6 months ago by Michael Koziarski origin/2-2-stable
2010-08-17 17:11:17 -0700 1 year, 11 months ago by Aaron Patterson origin/deps_refactor
2010-05-16 15:20:52 -0300 2 years, 2 months ago by Santiago Pastorino origin/encoding
2009-09-09 22:25:23 -0700 2 years, 10 months ago by Beau Harrington origin/2-0-stable
2008-02-19 02:09:55 +0000 4 years, 5 months ago by Jeremy Kemper origin/1-2-stable
@loeschg
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loeschg commented Jul 24, 2015

👍 Awesome.

@aviemzur
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👍 Cool

@kursion
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kursion commented Aug 18, 2015

👍

@joequery
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Awesome!

Here's how you use it as a git alias

[alias]
    branchauthors = "! for branch in `git branch -r | grep -v HEAD`;do echo `git show --format=\"%ai %ar by %an\" $branch | head -n 1` \t$branch; done | sort -r"

@joequery
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This works really well with seeing pull requests locally

@Jerakin
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Jerakin commented Mar 16, 2016

for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --pretty=format:"%Cred %cn %>|(40) %Cblue %ar %>|(80) %Creset" $branch | head -n 1` $branch; done | sort -r

For a version that sorts on name, have age and branch. Also formated with colors.
Piotr Sarnacki 7 days ago origin/3-0-stable
Piotr Sarnacki 4 months ago origin/encoding

@tiagobarbosamelo
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👍

@bauertank
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Thanks 👍

@ananthulasrikar
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Awesome thanks so much.

@dmusican
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dmusican commented Dec 1, 2017

Thank you, this is great!

@dmusican
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dmusican commented Dec 4, 2017

Here's one very minor update I can make to the excellent solution by Jerakin:

[alias]
    branchauthors = "! for branch in `git branch -r | grep -v /HEAD`;do echo `git show --format=\"%ai %ar by %an\" $branch | head -n 1` \t$branch; done | sort -r"

By putting the slash in front of HEAD, it doesn't filter out branches that have HEAD within the name (like my_HEAD_branch) or some such.

@ktornow13
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THANK YOU! This was just what i was looking for - wanted to let you know it is still being used!

@AlexanderLill
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Thank you! Same here, appreciate the snippet.

@ichihara-3
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Thank you! This is Great 👍

@Kapcash
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Kapcash commented Apr 28, 2020

We can add the format placeholder %<(N) or %>(N) to fix the width of every data, so that we have clean columns:

for branch in `git branch -r | grep -v HEAD`;do echo -e "`git show --format="%>(25)%an | %<(25)%ar" $branch | head -n 1`" $branch; done | sort -r

@antonklimov
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If you look at what git show does you will see that it produces diffs, which is not necessary for this case. It might make sense to add something like --name-only to speed up things a bit if there are many remote branches.

@lexjacobs
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for branch in `git branch -r | grep -v HEAD`;do echo -e `git show --format="%ai %ar by %an %s" $branch | head -n 1` \\t$branch; done | sort -r

if you also want the commit message (comes form the %s per https://git-scm.com/docs/git-show)

@penggaolai
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penggaolai commented Jul 23, 2021

If I want to export the result to a csv file, output like "...1 year, 1 month ago..." will be in separate columns, is there any way to fix such a case.

@penguin359
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If I want to export the result to a csv file, output like "...1 year, 1 month ago..." will be in separate columns, is there any way to fix such a case.

Change the format string and add commas and/or double-quotes as needed to make it CSV compliant:

git show --format='"%ai","%ar by %an"' $branch

Or whatever you desire.

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