Signed-off-by: Philip Oakley <philipoakley@xxxxxxx>
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+Everyday Git With 20 Commands Or So
+===================================
+
+<<Individual Developer (Standalone)>> commands are essential for
+anybody who makes a commit, even for somebody who works alone.
+
+If you work with other people, you will need commands listed in
+the <<Individual Developer (Participant)>> section as well.
+
+People who play the <<Integrator>> role need to learn some more
+commands in addition to the above.
+
+<<Repository Administration>> commands are for system
+administrators who are responsible for the care and feeding
+of Git repositories.
+
+
+Individual Developer (Standalone)[[Individual Developer (Standalone)]]
+----------------------------------------------------------------------
+
+A standalone individual developer does not exchange patches with
+other people, and works alone in a single repository, using the
+following commands.
+
+ * linkgit:git-init[1] to create a new repository.
+
+ * linkgit:git-show-branch[1] to see where you are.
+
+ * linkgit:git-log[1] to see what happened.
+
+ * linkgit:git-checkout[1] and linkgit:git-branch[1] to switch
+ branches.
+
+ * linkgit:git-add[1] to manage the index file.
+
+ * linkgit:git-diff[1] and linkgit:git-status[1] to see what
+ you are in the middle of doing.
+
+ * linkgit:git-commit[1] to advance the current branch.
+
+ * linkgit:git-reset[1] and linkgit:git-checkout[1] (with
+ pathname parameters) to undo changes.
+
+ * linkgit:git-merge[1] to merge between local branches.
+
+ * linkgit:git-rebase[1] to maintain topic branches.
+
+ * linkgit:git-tag[1] to mark known point.
+
+Examples
+~~~~~~~~
+
+Use a tarball as a starting point for a new repository.::
++
+------------
+$ tar zxf frotz.tar.gz
+$ cd frotz
+$ git init
+$ git add . <1>
+$ git commit -m "import of frotz source tree."
+$ git tag v2.43 <2>
+------------
++
+<1> add everything under the current directory.
+<2> make a lightweight, unannotated tag.
+
+Create a topic branch and develop.::
++
+------------
+$ git checkout -b alsa-audio <1>
+$ edit/compile/test
+$ git checkout -- curses/ux_audio_oss.c <2>
+$ git add curses/ux_audio_alsa.c <3>
+$ edit/compile/test
+$ git diff HEAD <4>
+$ git commit -a -s <5>
+$ edit/compile/test
+$ git reset --soft HEAD^ <6>
+$ edit/compile/test
+$ git diff ORIG_HEAD <7>
+$ git commit -a -c ORIG_HEAD <8>
+$ git checkout master <9>
+$ git merge alsa-audio <10>
+$ git log --since='3 days ago' <11>
+$ git log v2.43.. curses/ <12>
+------------
++
+<1> create a new topic branch.
+<2> revert your botched changes in `curses/ux_audio_oss.c`.
+<3> you need to tell Git if you added a new file; removal and
+modification will be caught if you do `git commit -a` later.
+<4> to see what changes you are committing.
+<5> commit everything as you have tested, with your sign-off.
+<6> take the last commit back, keeping what is in the working tree.
+<7> look at the changes since the premature commit we took back.
+<8> redo the commit undone in the previous step, using the message
+you originally wrote.
+<9> switch to the master branch.
+<10> merge a topic branch into your master branch.
+<11> review commit logs; other forms to limit output can be
+combined and include `--max-count=10` (show 10 commits),
+`--until=2005-12-10`, etc.
+<12> view only the changes that touch what's in `curses/`
+directory, since `v2.43` tag.
+
+
+Individual Developer (Participant)[[Individual Developer (Participant)]]
+------------------------------------------------------------------------
+
+A developer working as a participant in a group project needs to
+learn how to communicate with others, and uses these commands in
+addition to the ones needed by a standalone developer.
+
+ * linkgit:git-clone[1] from the upstream to prime your local
+ repository.
+
+ * linkgit:git-pull[1] and linkgit:git-fetch[1] from "origin"
+ to keep up-to-date with the upstream.
+
+ * linkgit:git-push[1] to shared repository, if you adopt CVS
+ style shared repository workflow.
+
+ * linkgit:git-format-patch[1] to prepare e-mail submission, if
+ you adopt Linux kernel-style public forum workflow.
+
+Examples
+~~~~~~~~
+
+Clone the upstream and work on it. Feed changes to upstream.::
++
+------------
+$ git clone git://git.kernel.org/pub/scm/.../torvalds/linux-2.6 my2.6
+$ cd my2.6
+$ edit/compile/test; git commit -a -s <1>
+$ git format-patch origin <2>
+$ git pull <3>
+$ git log -p ORIG_HEAD.. arch/i386 include/asm-i386 <4>
+$ git pull git://git.kernel.org/pub/.../jgarzik/libata-dev.git ALL <5>
+$ git reset --hard ORIG_HEAD <6>
+$ git gc <7>
+$ git fetch --tags <8>
+------------
++
+<1> repeat as needed.
+<2> extract patches from your branch for e-mail submission.
+<3> `git pull` fetches from `origin` by default and merges into the
+current branch.
+<4> immediately after pulling, look at the changes done upstream
+since last time we checked, only in the
+area we are interested in.
+<5> fetch from a specific branch from a specific repository and merge.
+<6> revert the pull.
+<7> garbage collect leftover objects from reverted pull.
+<8> from time to time, obtain official tags from the `origin`
+and store them under `.git/refs/tags/`.
+
+
+Push into another repository.::
++
+------------
+satellite$ git clone mothership:frotz frotz <1>
+satellite$ cd frotz
+satellite$ git config --get-regexp '^(remote|branch)\.' <2>
+remote.origin.url mothership:frotz
+remote.origin.fetch refs/heads/*:refs/remotes/origin/*
+branch.master.remote origin
+branch.master.merge refs/heads/master
+satellite$ git config remote.origin.push \
+ master:refs/remotes/satellite/master <3>
+satellite$ edit/compile/test/commit
+satellite$ git push origin <4>
+
+mothership$ cd frotz
+mothership$ git checkout master
+mothership$ git merge satellite/master <5>
+------------
++
+<1> mothership machine has a frotz repository under your home
+directory; clone from it to start a repository on the satellite
+machine.
+<2> clone sets these configuration variables by default.
+It arranges `git pull` to fetch and store the branches of mothership
+machine to local `remotes/origin/*` remote-tracking branches.
+<3> arrange `git push` to push local `master` branch to
+`remotes/satellite/master` branch of the mothership machine.
+<4> push will stash our work away on `remotes/satellite/master`
+remote-tracking branch on the mothership machine. You could use this
+as a back-up method.
+<5> on mothership machine, merge the work done on the satellite
+machine into the master branch.
+
+Branch off of a specific tag.::
++
+------------
+$ git checkout -b private2.6.14 v2.6.14 <1>
+$ edit/compile/test; git commit -a
+$ git checkout master
+$ git format-patch -k -m --stdout v2.6.14..private2.6.14 |
+ git am -3 -k <2>
+------------
++
+<1> create a private branch based on a well known (but somewhat behind)
+tag.
+<2> forward port all changes in `private2.6.14` branch to `master` branch
+without a formal "merging".
+
+
+Integrator[[Integrator]]
+------------------------
+
+A fairly central person acting as the integrator in a group
+project receives changes made by others, reviews and integrates
+them and publishes the result for others to use, using these
+commands in addition to the ones needed by participants.
+
+ * linkgit:git-am[1] to apply patches e-mailed in from your
+ contributors.
+
+ * linkgit:git-pull[1] to merge from your trusted lieutenants.
+
+ * linkgit:git-format-patch[1] to prepare and send suggested
+ alternative to contributors.
+
+ * linkgit:git-revert[1] to undo botched commits.
+
+ * linkgit:git-push[1] to publish the bleeding edge.
+
+
+Examples
+~~~~~~~~
+
+My typical Git day.::
++
+------------
+$ git status <1>
+$ git show-branch <2>
+$ mailx <3>
+& s 2 3 4 5 ./+to-apply
+& s 7 8 ./+hold-linus
+& q
+$ git checkout -b topic/one master
+$ git am -3 -i -s -u ./+to-apply <4>
+$ compile/test
+$ git checkout -b hold/linus && git am -3 -i -s -u ./+hold-linus <5>
+$ git checkout topic/one && git rebase master <6>
+$ git checkout pu && git reset --hard next <7>
+$ git merge topic/one topic/two && git merge hold/linus <8>
+$ git checkout maint
+$ git cherry-pick master~4 <9>
+$ compile/test
+$ git tag -s -m "GIT 0.99.9x" v0.99.9x <10>
+$ git fetch ko && git show-branch master maint 'tags/ko-*' <11>
+$ git push ko <12>
+$ git push ko v0.99.9x <13>
+------------
++
+<1> see what I was in the middle of doing, if any.
+<2> see what topic branches I have and think about how ready
+they are.
+<3> read mails, save ones that are applicable, and save others
+that are not quite ready.
+<4> apply them, interactively, with my sign-offs.
+<5> create topic branch as needed and apply, again with my
+sign-offs.
+<6> rebase internal topic branch that has not been merged to the
+master, nor exposed as a part of a stable branch.
+<7> restart `pu` every time from the next.
+<8> and bundle topic branches still cooking.
+<9> backport a critical fix.
+<10> create a signed tag.
+<11> make sure I did not accidentally rewind master beyond what I
+already pushed out. `ko` shorthand points at the repository I have
+at kernel.org, and looks like this:
++
+------------
+$ cat .git/remotes/ko
+URL: kernel.org:/pub/scm/git/git.git
+Pull: master:refs/tags/ko-master
+Pull: next:refs/tags/ko-next
+Pull: maint:refs/tags/ko-maint
+Push: master
+Push: next
+Push: +pu
+Push: maint
+------------
++
+In the output from `git show-branch`, `master` should have
+everything `ko-master` has, and `next` should have
+everything `ko-next` has.
+
+<12> push out the bleeding edge.
+<13> push the tag out, too.
+
+
+Repository Administration[[Repository Administration]]
+------------------------------------------------------
+
+A repository administrator uses the following tools to set up
+and maintain access to the repository by developers.
+
+ * linkgit:git-daemon[1] to allow anonymous download from
+ repository.
+
+ * linkgit:git-shell[1] can be used as a 'restricted login shell'
+ for shared central repository users.
+
+link:howto/update-hook-example.html[update hook howto] has a good
+example of managing a shared central repository.
+
+
+Examples
+~~~~~~~~
+We assume the following in /etc/services::
++
+------------
+$ grep 9418 /etc/services
+git 9418/tcp # Git Version Control System
+------------
+
+Run git-daemon to serve /pub/scm from inetd.::
++
+------------
+$ grep git /etc/inetd.conf
+git stream tcp nowait nobody \
+ /usr/bin/git-daemon git-daemon --inetd --export-all /pub/scm
+------------
++
+The actual configuration line should be on one line.
+
+Run git-daemon to serve /pub/scm from xinetd.::
++
+------------
+$ cat /etc/xinetd.d/git-daemon
+# default: off
+# description: The Git server offers access to Git repositories
+service git
+{
+ disable = no
+ type = UNLISTED
+ port = 9418
+ socket_type = stream
+ wait = no
+ user = nobody
+ server = /usr/bin/git-daemon
+ server_args = --inetd --export-all --base-path=/pub/scm
+ log_on_failure += USERID
+}
+------------
++
+Check your xinetd(8) documentation and setup, this is from a Fedora system.
+Others might be different.
+
+Give push/pull only access to developers.::
++
+------------
+$ grep git /etc/passwd <1>
+alice:x:1000:1000::/home/alice:/usr/bin/git-shell
+bob:x:1001:1001::/home/bob:/usr/bin/git-shell
+cindy:x:1002:1002::/home/cindy:/usr/bin/git-shell
+david:x:1003:1003::/home/david:/usr/bin/git-shell
+$ grep git /etc/shells <2>
+/usr/bin/git-shell
+------------
++
+<1> log-in shell is set to /usr/bin/git-shell, which does not
+allow anything but `git push` and `git pull`. The users should
+get an ssh access to the machine.
+<2> in many distributions /etc/shells needs to list what is used
+as the login shell.
+
+CVS-style shared repository.::
++
+------------
+$ grep git /etc/group <1>
+git:x:9418:alice,bob,cindy,david
+$ cd /home/devo.git
+$ ls -l <2>
+ lrwxrwxrwx 1 david git 17 Dec 4 22:40 HEAD -> refs/heads/master
+ drwxrwsr-x 2 david git 4096 Dec 4 22:40 branches
+ -rw-rw-r-- 1 david git 84 Dec 4 22:40 config
+ -rw-rw-r-- 1 david git 58 Dec 4 22:40 description
+ drwxrwsr-x 2 david git 4096 Dec 4 22:40 hooks
+ -rw-rw-r-- 1 david git 37504 Dec 4 22:40 index
+ drwxrwsr-x 2 david git 4096 Dec 4 22:40 info
+ drwxrwsr-x 4 david git 4096 Dec 4 22:40 objects
+ drwxrwsr-x 4 david git 4096 Nov 7 14:58 refs
+ drwxrwsr-x 2 david git 4096 Dec 4 22:40 remotes
+$ ls -l hooks/update <3>
+ -r-xr-xr-x 1 david git 3536 Dec 4 22:40 update
+$ cat info/allowed-users <4>
+refs/heads/master alice\|cindy
+refs/heads/doc-update bob
+refs/tags/v[0-9]* david
+------------
++
+<1> place the developers into the same git group.
+<2> and make the shared repository writable by the group.
+<3> use update-hook example by Carl from Documentation/howto/
+for branch policy control.
+<4> alice and cindy can push into master, only bob can push into doc-update.
+david is the release manager and is the only person who can
+create and push version tags.
+
+HTTP server to support dumb protocol transfer.::
++
+------------
+dev$ git update-server-info <1>
+dev$ ftp user@xxxxxxxxxxxxxxx <2>
+ftp> cp -r .git /home/user/myproject.git
+------------
++
+<1> make sure your info/refs and objects/info/packs are up-to-date
+<2> upload to public HTTP server hosted by your ISP.
--
1.8.3.msysgit.0
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