-*- mode: outline; coding: utf-8; fill-column: 80 -*-

* Setup git.

** Debian.

For Etch Degian release use git-core package from backports,

old 1.4 version of git very dumb compared to new version 1.5.

  $ sudo apt-get install git-core

After install setup some options:

  $ git config --global user.name "Oleksandr Gavenko"

  $ git config --global user.mail "gavenkoa@gmail.com"

  $ cat ~/.gitconfig

[user]

    name = Oleksandr Gavenko

    mail = gavenkoa@gmail.com

** Windows.

No official support for Windows OS.

*** Cygwin.

  $ setup.exe -p git

*** MSys.

Native port.

  $ cat gitconfig

[core]

autocrlf = false

symlinks = false

  http://code.google.com/p/msysgit

* git over proxy.

Only http:// protocol support proxy (not git://).

  $ export http_proxy="http://username:password@proxy:port/"

  $ git clone http://github.com/$user/$proj.git $proj

* Start your project.

Setup proj space on fs.

  $ mkdir proj

  $ cd proj

  $ git init

Initialized empty Git repository in /home/user/tmp/proj/.git/

  $ ls -a

. .. .git

Add file, make changes, commit all.

  $ emacs Makefile

... C-x C-c

  $ emacs app.c

... C-x C-c

  $ git add Makefile app.c

  $ git status

# On branch master

#

# Initial commit

#

# Changes to be committed:

#   (use "git rm --cached <file>..." to unstage)

#

#       new file: Makefile

#       new file: app.c

#

or just

  $ git add .

Commit newlly added file:

  $ git commit

... Write message log ...

Created initial commit 2169263: My first commit massage.

 1 files changed, 4 insertions(+), 0 deletions(-)

 create mode 100644 app.c

* Undo tracking added file.

You do

  $ git add badfile

  $ git status

# On branch master

# Changes to be committed:

#   (use "git reset HEAD <file>..." to unstage)

#

#       new file:   badfile

#

To stop tracking badfile do

  $ git rm --cached badfile

  $ git status

# On branch master

# Untracked files:

#   (use "git add <file>..." to include in what will be committed)

#

#       file

nothing added to commit but untracked files present (use "git add" to track)

or

  $ git reset badfile

* Doing changes.

  $ printf "clean:\n<TAB>rm $(wildcard *.o)\n" >>Makefile

  $ git diff

diff --git a/Makefile b/Makefile

index e84f7e9..cd2438a 100644

--- a/Makefile

+++ b/Makefile

@@ -1,2 +1,5 @@

 all:

        @echo XXX

        exit 1

+

+clean:

+       rm -f *.o

  $ git add Makefile

  $ git commit -m "Added clean target."

Created commit 11272b9: Added clean target.

 1 files changed, 1 insertions(+), 0 deletions(-)

 create mode 100644 file

or just

  $ git commit -a -m "Added clean target."

* git analog of 'hg incoming'.

git does not directly support such feature. You can emulate it by:

  $ git fetch

  $ git log master..origin/master   # or just '..origin/master'

By previous commands you grab changes from remote server! You can apply them:

  TODO

  $ git merge

* Debug git network operation.

Git uses libcurl for network operation.

  $ export GIT_CURL_VERBOSE=1

  $ git ...

* Using git to work with SVN offline.

Prepare SVN and git utilities:

  $ sudo apt-get svn git-core git-svn

Making SVN repo

  $ cd $HOME/tmp

  $ svnadmin create svn-repo

  $ svn co file://$HOME/tmp/svn-repo svn-devel

  $ cd svn-devel

  $ mkdir tags trunk branches

  $ svn add *

A         branches

A         tags

A         trunk

  $ cd trunk/

  $ printf "all:\n  echo XXX\n" >Makefile

  $ printf "int main() {return 0;}" >main.c

  $ svn add *

  $ cd ..

  $ svn st

A      trunk

A      trunk/main.c

A      trunk/Makefile

A      branches

A      tags

  $ svn ci -m init

Adding         branches

Adding         tags

Adding         trunk

Adding         trunk/Makefile

Adding         trunk/main.c

Transmitting file data ..

  $ svn cp -m v0.0 file://$HOME/tmp/svn/trunk file://$HOME/tmp/svn/tags/v0.0

  $ svn cp -m v0.1 file://$HOME/tmp/svn/trunk file://$HOME/tmp/svn/branches/v0.1

Moving SVN changset to git repo

  $ cd $HOME/tmp

  $ git svn init file://$HOME/tmp/svn git-repo

  $ ls -a

.  ..  .git

  $ git svn fetch

    A   trunk/main.c

    A   trunk/Makefile

W: +empty_dir: branches

W: +empty_dir: tags

r1 = 52ccd9882979dd53ec198dbac108783ec660410f (git-svn)

    A   tags/v0.0/main.c

    A   tags/v0.0/Makefile

r2 = 8ec8a772bb6f37ace56b3649066dc84e481ed427 (git-svn)

    M   trunk/Makefile

r3 = 2c169ff409ed504dd6a092b1e302beb3fd94871e (git-svn)

    A   branches/v0.1/main.c

    A   branches/v0.1/Makefile

r4 = e68d76f4ba6beea4b9059c1884c1f38ce10831a7 (git-svn)

    M   trunk/Makefile

r5 = cdde63974454b13ac53f2eeb201aa76c49fd875c (git-svn)

Checked out HEAD:

  file:///home/sasha/tmp/svn r5

or (in old git version):

  $ git svn clone file://$HOME/tmp/svn git-repo

Making changes in svn:

  $ cd $HOME/tmp/svn-devel/trunk

  $ echo ".PHONY: clean" >>Makefile

  $ svn ci -m "Added clean to phony."

Sending        trunk/Makefile

Transmitting file data .

Committed revision 6.

Making committed in git:

  $ cd $HOME/tmp/git-repo/trunk

  $ echo ".PHONY: all" >>Makefile

  $ echo "int foo(int x) {return x+x;}" >>main.c

  $ git status

# On branch master

# Changed but not updated:

#   (use "git add <file>..." to update what will be committed)

#

#       modified:   Makefile

#       modified:   main.c

#

no changes added to commit (use "git add" and/or "git commit -a")

  $ git commit -a -m "Bug fixed."

Created commit 222d399: Bug fixed.

 2 files changed, 2 insertions(+), 0 deletions(-)

Getting changes from SVN to git:

  $ git svn rebase

    M   trunk/Makefile

r6 = 8165e9bfb38e9df09a7313d19606ec227629b670 (git-svn)

First, rewinding head to replay your work on top of it...

Applying Bug fixed.

error: patch failed: trunk/Makefile:6

error: trunk/Makefile: patch does not apply

Using index info to reconstruct a base tree...

Falling back to patching base and 3-way merge...

Auto-merged trunk/Makefile

CONFLICT (content): Merge conflict in trunk/Makefile

Failed to merge in the changes.

Patch failed at 0001.

When you have resolved this problem run "git rebase --continue".

If you would prefer to skip this patch, instead run "git rebase --skip".

To restore the original branch and stop rebasing run "git rebase --abort".

rebase refs/remotes/git-svn: command returned error: 1

  $ git add Makefile

  $ git rebase --continue

Applying Bug fixed.

and return all from git to SVN:

  $ git svn dcommit

Committing to file:///home/sasha/tmp/svn ...

    M   trunk/Makefile

    M   trunk/main.c

Committed r7

    M   trunk/main.c

    M   trunk/Makefile

r7 = 68e782c8d06635f2db4dd69b9ca8599f99da22e2 (git-svn)

No changes between current HEAD and refs/remotes/git-svn

Resetting to the latest refs/remotes/git-svn

See what going to SVN repo:

  $ cd $HOME/tmp/svn-devel/trunk

  $ svn diff -r BASE:HEAD

Index: Makefile

===================================================================

--- Makefile    (working copy)

+++ Makefile    (revision 7)

@@ -6,4 +6,4 @@

 .o: .c

    $(CC) $(CFLAGS) -c -o $@ $<

-.PHONY: clean

+.PHONY: all clean

Index: main.c

===================================================================

--- main.c  (working copy)

+++ main.c  (revision 7)

@@ -2,3 +2,4 @@

 {

     return 0;

 }

+int foo(int x) {return x+x;}

  $ svn up

U    Makefile

U    main.c

Updated to revision 7.

* gitk

gitk - The git repository browser

Installing:

  $ sudo apt-get instal gitk

Using:

  $ cd /path/to/git-repo

  $ gitk

See

  gitk(1)