b08f3dd81a
As discussed in #5498, Windows users in particular may need to restart their command shell after installing a Git LFS binary in order for changes to $PATH to take effect, so we add a note to our installation instructions on this point.
251 lines
10 KiB
Markdown
251 lines
10 KiB
Markdown
# Git Large File Storage
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[![CI status][ci_badge]][ci_url]
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[ci_badge]: https://github.com/git-lfs/git-lfs/workflows/CI/badge.svg
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[ci_url]: https://github.com/git-lfs/git-lfs/actions?query=workflow%3ACI
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[Git LFS](https://git-lfs.github.com) is a command line extension and
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[specification](docs/spec.md) for managing large files with Git.
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The client is written in Go, with pre-compiled binaries available for Mac,
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Windows, Linux, and FreeBSD. Check out the [website](http://git-lfs.github.com)
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for an overview of features.
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## Getting Started
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### Installing
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#### On Linux
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Debian and RPM packages are available from packagecloud, see the [Linux installation instructions](INSTALLING.md).
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#### On macOS
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[Homebrew](https://brew.sh) bottles are distributed and can be installed via `brew install git-lfs`.
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#### On Windows
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Git LFS is included in the distribution of [Git for Windows](https://gitforwindows.org/).
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Alternatively, you can install a recent version of Git LFS from the [Chocolatey](https://chocolatey.org/) package manager.
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#### From binary
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[Binary packages](https://github.com/git-lfs/git-lfs/releases) are
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available for Linux, macOS, Windows, and FreeBSD.
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The binary packages include a script which will:
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- Install Git LFS binaries onto the system `$PATH`. On Windows in particular, you may need to restart your command shell so any change to `$PATH` will take effect and Git can locate the Git LFS binary.
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- Run `git lfs install` to perform required global configuration changes.
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```ShellSession
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$ ./install.sh
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```
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Note that Debian and RPM packages are built for multiple Linux distributions and versions for both amd64 and i386.
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For arm64, only Debian packages are built and only for recent versions due to the cost of building in emulation.
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#### From source
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- Ensure you have the latest version of Go, GNU make, and a standard Unix-compatible build environment installed.
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- On Windows, install `goversioninfo` with `go install github.com/josephspurrier/goversioninfo/cmd/goversioninfo@latest`.
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- Run `make`.
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- Place the `git-lfs` binary, which can be found in `bin`, on your system’s executable `$PATH` or equivalent.
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- Git LFS requires global configuration changes once per-machine. This can be done by
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running: `git lfs install`
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#### Verifying releases
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Releases are signed with the OpenPGP key of one of the core team members. To
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get these keys, you can run the following command, which will print them to
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standard output:
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```ShellSession
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$ curl -L https://api.github.com/repos/git-lfs/git-lfs/tarball/core-gpg-keys | tar -Ozxf -
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```
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Once you have the keys, you can download the `sha256sums.asc` file and verify
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the file you want like so:
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```ShellSession
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$ gpg -d sha256sums.asc | grep git-lfs-linux-amd64-v2.10.0.tar.gz | shasum -a 256 -c
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```
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For the convenience of distributors, we also provide a wider variety of signed
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hashes in the `hashes.asc` file. Those hashes are in the tagged BSD format, but
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can be verified with Perl's `shasum` or the GNU hash utilities, just like the
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ones in `sha256sums.asc`.
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## Example Usage
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To begin using Git LFS within a Git repository that is not already configured
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for Git LFS, you can indicate which files you would like Git LFS to manage.
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This can be done by running the following _from within a Git repository_:
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```bash
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$ git lfs track "*.psd"
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```
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(Where `*.psd` is the pattern of filenames that you wish to track. You can read
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more about this pattern syntax
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[here](https://git-scm.com/docs/gitattributes)).
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> *Note:* the quotation marks surrounding the pattern are important to
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> prevent the glob pattern from being expanded by the shell.
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After any invocation of `git-lfs-track(1)` or `git-lfs-untrack(1)`, you _must
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commit changes to your `.gitattributes` file_. This can be done by running:
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```bash
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$ git add .gitattributes
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$ git commit -m "track *.psd files using Git LFS"
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```
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You can now interact with your Git repository as usual, and Git LFS will take
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care of managing your large files. For example, changing a file named `my.psd`
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(tracked above via `*.psd`):
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```bash
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$ git add my.psd
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$ git commit -m "add psd"
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```
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> _Tip:_ if you have large files already in your repository's history, `git lfs
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> track` will _not_ track them retroactively. To migrate existing large files
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> in your history to use Git LFS, use `git lfs migrate`. For example:
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>
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> ```
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> $ git lfs migrate import --include="*.psd" --everything
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> ```
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>
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> **Note that this will rewrite history and change all of the Git object IDs in your
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> repository, just like the export version of this command.**
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>
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> For more information, read [`git-lfs-migrate(1)`](https://github.com/git-lfs/git-lfs/blob/main/docs/man/git-lfs-migrate.adoc).
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You can confirm that Git LFS is managing your PSD file:
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```bash
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$ git lfs ls-files
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3c2f7aedfb * my.psd
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```
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Once you've made your commits, push your files to the Git remote:
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```bash
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$ git push origin main
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Uploading LFS objects: 100% (1/1), 810 B, 1.2 KB/s
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# ...
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To https://github.com/git-lfs/git-lfs-test
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67fcf6a..47b2002 main -> main
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```
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Note: Git LFS requires at least Git 1.8.2 on Linux or 1.8.5 on macOS.
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### Uninstalling
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If you've decided that Git LFS isn't right for you, you can convert your
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repository back to a plain Git repository with `git lfs migrate` as well. For
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example:
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```ShellSession
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$ git lfs migrate export --include="*.psd" --everything
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```
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**Note that this will rewrite history and change all of the Git object IDs in your
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repository, just like the import version of this command.**
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If there's some reason that things aren't working out for you, please let us
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know in an issue, and we'll definitely try to help or get it fixed.
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## Limitations
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Git LFS maintains a list of currently known limitations, which you can find and
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edit [here](https://github.com/git-lfs/git-lfs/wiki/Limitations).
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Git LFS source code utilizes Go modules in its build system, and therefore this
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project contains a `go.mod` file with a defined Go module path. However, we
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do not maintain a stable Go language API or ABI, as Git LFS is intended to be
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used solely as a compiled binary utility. Please do not import the `git-lfs`
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module into other Go code and do not rely on it as a source code dependency.
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## Need Help?
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You can get help on specific commands directly:
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```bash
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$ git lfs help <subcommand>
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```
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The [official documentation](docs) has command references and specifications for
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the tool. There's also a [FAQ](https://github.com/git-lfs/git-lfs/blob/main/docs/man/git-lfs-faq.adoc)
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shipped with Git LFS which answers some common questions.
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If you have a question on how to use Git LFS, aren't sure about something, or
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are looking for input from others on tips about best practices or use cases,
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feel free to
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[start a discussion](https://github.com/git-lfs/git-lfs/discussions).
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You can always [open an issue](https://github.com/git-lfs/git-lfs/issues), and
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one of the Core Team members will respond to you. Please be sure to include:
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1. The output of `git lfs env`, which displays helpful information about your
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Git repository useful in debugging.
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2. Any failed commands re-run with `GIT_TRACE=1` in the environment, which
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displays additional information pertaining to why a command crashed.
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## Contributing
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See [CONTRIBUTING.md](CONTRIBUTING.md) for info on working on Git LFS and
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sending patches. Related projects are listed on the [Implementations wiki
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page](https://github.com/git-lfs/git-lfs/wiki/Implementations).
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See also [SECURITY.md](SECURITY.md) for info on how to submit reports
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of security vulnerabilities.
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## Core Team
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These are the humans that form the Git LFS core team, which runs the project.
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In alphabetical order:
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| [@bk2204][bk2204-user] | [@chrisd8088][chrisd8088-user] | [@larsxschneider][larsxschneider-user] |
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| :---: | :---: | :---: |
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| [![][bk2204-img]][bk2204-user] | [![][chrisd8088-img]][chrisd8088-user] | [![][larsxschneider-img]][larsxschneider-user] |
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| [PGP 0223B187][bk2204-pgp] | [PGP 088335A9][chrisd8088-pgp] | [PGP A5795889][larsxschneider-pgp] |
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[bk2204-img]: https://avatars1.githubusercontent.com/u/497054?s=100&v=4
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[chrisd8088-img]: https://avatars1.githubusercontent.com/u/28857117?s=100&v=4
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[larsxschneider-img]: https://avatars1.githubusercontent.com/u/477434?s=100&v=4
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[bk2204-user]: https://github.com/bk2204
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[chrisd8088-user]: https://github.com/chrisd8088
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[larsxschneider-user]: https://github.com/larsxschneider
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[bk2204-pgp]: https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x88ace9b29196305ba9947552f1ba225c0223b187
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[chrisd8088-pgp]: https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x86cd3297749375bcf8206715f54fe648088335a9
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[larsxschneider-pgp]: https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xaa3b3450295830d2de6db90caba67be5a5795889
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### Alumni
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These are the humans that have in the past formed the Git LFS core team, or
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have otherwise contributed a significant amount to the project. Git LFS would
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not be possible without them.
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In alphabetical order:
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| [@andyneff][andyneff-user] | [@PastelMobileSuit][PastelMobileSuit-user] | [@rubyist][rubyist-user] | [@sinbad][sinbad-user] | [@technoweenie][technoweenie-user] | [@ttaylorr][ttaylorr-user] |
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| :---: | :---: | :---: | :---: | :---: | :---: |
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| [![][andyneff-img]][andyneff-user] | [![][PastelMobileSuit-img]][PastelMobileSuit-user] | [![][rubyist-img]][rubyist-user] | [![][sinbad-img]][sinbad-user] | [![][technoweenie-img]][technoweenie-user] | [![][ttaylorr-img]][ttaylorr-user] |
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[andyneff-img]: https://avatars1.githubusercontent.com/u/7596961?v=3&s=100
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[PastelMobileSuit-img]: https://avatars2.githubusercontent.com/u/37254014?s=100&v=4
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[rubyist-img]: https://avatars1.githubusercontent.com/u/143?v=3&s=100
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[sinbad-img]: https://avatars1.githubusercontent.com/u/142735?v=3&s=100
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[technoweenie-img]: https://avatars3.githubusercontent.com/u/21?v=3&s=100
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[ttaylorr-img]: https://avatars2.githubusercontent.com/u/443245?s=100&v=4
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[andyneff-user]: https://github.com/andyneff
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[PastelMobileSuit-user]: https://github.com/PastelMobileSuit
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[sinbad-user]: https://github.com/sinbad
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[rubyist-user]: https://github.com/rubyist
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[technoweenie-user]: https://github.com/technoweenie
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[ttaylorr-user]: https://github.com/ttaylorr
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