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# GIT Cheat's


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Initial


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URLs

  git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
  git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.git
  git://git.kernel.org/pub/scm/linux/kernel/git/acme/pahole.git
  http://sources.redhat.com/git/systemtap.git
  rsync://rsync.kernel.org/pub/scm/linux/kernel/git/tglx/hrtimer-2.6.git
  rsync://rsync.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git
  rsync://rsync.kernel.org/pub/scm/linux/kernel/git/axboe/blktrace.git

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Clone

  vanilla clone
  # git-clone git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git linux-2.6

  Clone via reference
  # git-clone --reference ./linux-2.6 git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6.git net-2.6

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New Project (aka initial import)

  New Project
  # mkdir hack_session; cd hack_session
  # git init-db
  # git add .
  # git commit

  

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Change Repository


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Checkout

  Revert a file local
  # git checkout -- <filename>

  Revert all local files
  # git checkout -f

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Commit

  Commit everything what changed since last commit
  with a SoB message (display with "git diff HEAD")
  # git commit -a -s 
 
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Pull

  Fast Forward Merge
  # git pull

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Branches

  Create a branch
  # git branch -f <branchname>
  or
  # git branch workingbranch master
  # git checkout workingbranch

  Show all branches
  # git branch

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See what happend -- Gather Information


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Diff

  See what you commit if you commit
  # git diff HEAD


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Log

  Display what changed since a defined amount of time
  # git log --since='2 days ago'

  Display log between current branch (HEAD) and master
  # git log master..HEAD

  As usual, the best way to get some grip on a particular
  subsystem would tend to be with some script like.
  List by commiters
  # git log --no-merges v2.6.18.. drivers/usb | git shortlog | less -S

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Blame

  Display who wrote a specific lime of code
  # git blame <filename>


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Show

  Display what changed through the specific commit
  # git show <commit>


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Patch

  Generate a patch for diff between master and HEAD
  # git format-patch master..HEAD

  Generate a patch for the last local commit
  with SoB message and ignore introduced whitespace errors
  and generate a nice looking subject line ([PATCH n/m] ...)
  the C option detect copies
  # git format-patch -s -b -n -C -1 

  Generate a delta between you branch and the master branch (HEAD
  is an alias for your working branch)
  # git format-patch master workingbranch

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Subversion and GIT

  Initialize a repo (like git init):
  #git-svn clone svn+ssh://hgndgtl@svn.berlios.de/svnroot/repos/netsend netsend
  #git svn init https://libhashish.svn.sourceforge.net/svnroot/libhashish

  Do some work, and then commit your new changes to SVN, as well as
  automatically updating your working HEAD:
  # git-svn dcommit

  Something has been committed to trunk, rebase the latest into your branch:
  #git-svn rebase



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Find A Bug (good luck)

  Bisect the source
  # git bisect start
  # git bisect bad
  # git bisect good v2.6.13-rc2
  # git bad
  or
  # git good

  # git bisect reset


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Additional Information

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Send patch via mutt

  Generate a patch (git format-patch) and invoke mutt
  via -H <patch>
  # mutt -H 00*.patch

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Send multiple patches

  Send multiple patches via git-send-email and compose an
  introduction email, but first generate all patches:
  # git format-patch -C -n -1
  # git send-email --compose --suppress-from --to <email-address> 00*.patch

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Apply patched received via mutt

  Save the patch (as a normal attachment), go
  to the git repo and type
  git am <path-to-patchfiles>

  

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Global Configuration


# ~/.gitconfig

[user]
  name = "Hagen Paul Pfeifer"
  email = "hagen@jauu.net"

[sendemail]
    bcc = hagen@jauu.net
    chainreplyto = false
    smtpserver = /home/pfeifer/bin/sendmail.sh

[color]
	status = auto
	diff = auto
	branch = auto

[color "branch"]
  current = yellow reverse
  local = yellow
  remote = green

[color "diff"]
  meta = yellow bold
  frag = magenta bold
  old = red bold
  new = green bold

[color "status"]
  added = yellow
  changed = green
  untracked = cyan

[alias]
	st = status
	ci = commit
	co = checkout

[core]
	legacyheaders = false
	excludesfile = /home/pfeifer/.gitignore

[repack]

	usedeltabaseoffset = true



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The upper sendmail script:


#!/bin/sh

exec /usr/bin/ssh -T pfeifer@0xdef.net /usr/sbin/sendmail "$@"