bhpayne/delete_large_file.md

## delete_large_file.md

      
    Raw
  

              delete_large_file.md
            
          
    Following command edits the bare repo (rather than a clone of the repo)
cd bare_git_repo
git filter-branch --prune-empty -d /Users/username/software/git_test/git_backup --index-filter "git rm --cached -f --ignore-unmatch a_large_binary" --tag-name-filter cat -- --all

Then run the following on the bare repo
git update-ref -d refs/original/refs/heads/master
git reflog expire --expire=now --all
git gc --prune=now

Now that the bare repo is cleaned, users should discard old clone and get a new clone
cd cloned_git_repo
rm -rf bare_git_repo/
git clone file:///Users/username/software/git_test/bare_git_repo/
cd bare_git_repo/

Verify in the cloned version the file is actually gone:
git log --graph --decorate --pretty=oneline --abbrev-commit --all --name-status


## make_git_entries.sh
#!/usr/bin/env bash

# chmod u+x make_and_delete_big_file.sh
# rm -rf bare_git_repo/ cloned_git_repo/

set -eux
STARTING_DIRECTORY=`pwd`

mkdir bare_git_repo
cd bare_git_repo
GIT_BARE_REPO_DIRECTORY=`pwd`
git init --bare

cd ${STARTING_DIRECTORY}
mkdir cloned_git_repo
cd cloned_git_repo
GIT_CLONED_REPO_DIRECTORY=`pwd`
git clone ${GIT_BARE_REPO_DIRECTORY}
cd bare_git_repo

cat << EOF > README.md
This is the first file
commited to the repo
EOF
git add README.md
git commit -m "first file"
git push

cat << EOF > a_small_file.dat
Second commited file
in the repo
EOF
git add a_small_file.dat
git commit -m "second file"
git push

cat << EOF > a_large_binary
This file should be removed
from the repo
EOF
git add a_large_binary
git commit -m "a binary"
git push

cat << EOF > another_small_file.dat
This file was added
after the binary
EOF
git add another_small_file.dat
git commit -m "post-binary file"
git push

cat << EOF > yet_another.dat
latest file
in repo
EOF
git add yet_another.dat
git commit -m "latest"
git push

## view_git_history.md

      
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              view_git_history.md
            
          
    To review the history, use
git log

That's not very helpful for visualizing the history and files.
As per https://stackoverflow.com/a/2158271/1164295 the command
git lola --name-status

is actually
git log --graph --decorate --pretty=oneline --abbrev-commit --all --name-status

source: http://blog.kfish.org/2010/04/git-lola.html
	#!/usr/bin/env bash

	# chmod u+x make_and_delete_big_file.sh
	# rm -rf bare_git_repo/ cloned_git_repo/

	set -eux
	STARTING_DIRECTORY=`pwd`

	mkdir bare_git_repo
	cd bare_git_repo
	GIT_BARE_REPO_DIRECTORY=`pwd`
	git init --bare

	cd ${STARTING_DIRECTORY}
	mkdir cloned_git_repo
	cd cloned_git_repo
	GIT_CLONED_REPO_DIRECTORY=`pwd`
	git clone ${GIT_BARE_REPO_DIRECTORY}
	cd bare_git_repo

	cat << EOF > README.md
	This is the first file
	commited to the repo
	EOF
	git add README.md
	git commit -m "first file"
	git push

	cat << EOF > a_small_file.dat
	Second commited file
	in the repo
	EOF
	git add a_small_file.dat
	git commit -m "second file"
	git push

	cat << EOF > a_large_binary
	This file should be removed
	from the repo
	EOF
	git add a_large_binary
	git commit -m "a binary"
	git push

	cat << EOF > another_small_file.dat
	This file was added
	after the binary
	EOF
	git add another_small_file.dat
	git commit -m "post-binary file"
	git push

	cat << EOF > yet_another.dat
	latest file
	in repo
	EOF
	git add yet_another.dat
	git commit -m "latest"
	git push