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A Version 1 Technical Meetup talk covering the deep internals of git.
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A Version 1 Technical Meetup talk covering the deep internals of git.
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** Introduction
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** Introduction
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This is the slide-deck and set-up scripts used to give the /Git
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This is the slide-deck and set-up scripts used to give the /Git Deep Dive/ technical meet-up talk on 2018-06-25 in Version 1, by Éibhear Ó hAnluain.
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Deep Dive/ technical meet-up talk on [2018-06-25 Mon] in Version 1,
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by Éibhear Ó hAnluain.
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The pack comes with the following:
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The pack comes with the following:
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- This document
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- This document
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- The slide-deck, =GitDeepDive.pdf=
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- The slide-deck, =GitDeepDive.pdf=
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- A script to set up a simple git repository for exploration
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- A script to set up a simple git repository for exploration purposes: =simple-setup.sh=
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purposes: =merge-setup.sh=
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- A script to set up the mimic of a development team and processes: =gitDemo.sh=
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- A script to set up the mimic of a development team and processes:
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- A script to set up another simple repository to run through the process for completely clearing a file out of a git database: =largeFile-setup.sh=.
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=gitDemo.sh=
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- A script to set up another simple repository to run through the
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process for completely clearing a file out of a git database:
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=largeFile-setup.sh=.
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- A =.gitignore= file.
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- A =.gitignore= file.
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** Setup
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** Setup
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1) Run the script =merge-setup.sh=. This will create a git
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1) Run the script =simple-setup.sh=. This will create a git repository in =simpleRepo= and populate it with some commits. The commits in this repository will correspond to the diagrams in the slide-deck that relate to merging.
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repository in =simpleRepo= and populate it with some
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2) Run the script =largeFile-setup.sh=. This will create another git repository in =largeFileRepo= and populate it with the same commits as in =simpleRepo=, and then puts in some more to create and manipulate a large binary file, and then to remove it. This will be used for the demonstration to remove a file completely from the repository.
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commits. The commits in this repository will correspond to the
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3) Run the script =gitDemo.sh=. This will replicate a previous git repository as a bare repo in =devTeamDemo/javaBootcampNoEclipse.git=, and then create a number of clones to represent the actions of a team lead and two developers, and mimic collaborative development among them. =gitDemo.sh= takes one optional parameter, =-s=, which will cause the progression to stop for 15 seconds following each "actor's" push in order to afford the opportunity to look at the git log.
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diagrams in the slide-deck that relate to merging.
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4) Use the =gpg= utility to generate a key-pair so that you can work through the commit- and tag-signing slide and sample commands. If you have access to =gpg2= and not =gpg=, you'll need to set the following =git config= to make sure it's picked up: =git config --global gpg.program gpg2=.
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2) Run the script =largeFile-setup.sh=. This will create another
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5) Open the file =GitDeepDive.pdf=, and as you go through the slides, refer to the /Sample Commands/ section below for commands you can execute to get further insights.
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git repository in =largeFileRepo= and populate it with the same
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commits as in =simpleRepo=, and then puts in some more to create
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and manipulate a large binary file, and then to remove it. This
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will be used for the demonstration to remove a file completely
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from the repository.
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3) Run the script =gitDemo.sh=. This will replicate a previous git
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repository as a bare repo in
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=devTeamDemo/javaBootcampNoEclipse.git=, and then create a
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number of clones to represent the actions of a team lead and two
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developers, and mimic collaborative development among
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them. =gitDemo.sh= takes one optional parameter, =-s=, which
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will cause the progression to stop for 15 seconds following each
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"actor's" push in order to afford the opportunity to look at the
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git log.
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4) Use the =gpg= utility to generate a key-pair so that you can
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work through the commit- and tag-signing slide and sample
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commands. If you have access to =gpg2= and not =gpg=, you'll
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need to set the following =git config= to make sure it's picked
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up: =git config --global gpg.program gpg2=.
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5) Open the file =GitDeepDive.pdf=, and as you go through the
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slides, refer to the /Sample Commands/ section below for
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commands you can execute to get further insights.
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** Sample commands
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** Sample commands
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*** Slide: Merging approaches: Rebase
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*** Slide: Merging approaches: Rebase
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#+BEGIN_SRC shell
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#+BEGIN_SRC shell
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# Remove and refresh the simpleRepo
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# Remove and refresh the simpleRepo
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${BASE_DIR}/merge-setup.sh
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${BASE_DIR}/simple-setup.sh
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cd ${BASE_DIR}/simpleRepo
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cd ${BASE_DIR}/simpleRepo
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# Check out master, review its log, merge Rel1 and review the log
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# Check out master, review its log, merge Rel1 and review the log
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*** Slide: refs
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*** Slide: refs
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#+BEGIN_SRC shell
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#+BEGIN_SRC shell
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# Remove and refresh the simpleRepo
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# Remove and refresh the simpleRepo
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${BASE_DIR}/merge-setup.sh
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${BASE_DIR}/simple-setup.sh
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cd ${BASE_DIR}/simpleRepo
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cd ${BASE_DIR}/simpleRepo
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# Look at the contents of .git/refs/heads and one of the heads itself
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# Look at the contents of .git/refs/heads and one of the heads itself
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git log --follow -- "largeInformation.md"
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git log --follow -- "largeInformation.md"
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#+END_SRC
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#+END_SRC
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*** Slide: Permanently removing a file from your git db [1/2]
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*** Slide: Permanently removing a file from your git db
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#+BEGIN_SRC shell
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#+BEGIN_SRC shell
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# Preserve information on the tags, as you may need this later.
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# Preserve information on the tags, as you may need this later.
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