2 <img src="doc/logo-header.svg" alt="bat - a cat clone with wings"><br>
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7 A <i>cat(1)</i> clone with syntax highlighting and Git integration.
11 <a href="#syntax-highlighting">Key Features</a> •
12 <a href="#how-to-use">How To Use</a> •
13 <a href="#installation">Installation</a> •
14 <a href="#customization">Customization</a> •
15 <a href="#project-goals-and-alternatives">Project goals, alternatives</a> •
16 Translation [<a href="https://github.com/chinanf-boy/bat-zh">中文</a>][<a href="doc/README-ja.md">日本文</a>]
19### Syntax highlighting
21`bat` supports syntax highlighting for a large number of programming and markup
24
28`bat` communicates with `git` to show modifications with respect to the index
31
33### Show non-printable characters
35You can use the `-A`/`--show-all` option to show and highlight non-printable
38
42`bat` can pipe its own output to `less` if the output is too large for one screen.
46Oh.. you can also use it to concatenate files :wink:. Whenever
47`bat` detects a non-interactive terminal (i.e. when you pipe into another process
48or into a file), `bat` will act as a drop-in replacement for `cat` and
49fall back to printing the plain file contents.
53Display a single file on the terminal
59Display multiple files at once
65Read from stdin, determine the syntax automatically
68> curl -s https://sh.rustup.rs | bat
71Read from stdin, specify the language explicitly
74> yaml2json .travis.yml | json_pp | bat -l json
77Show and highlight non-printable characters:
82Use it as a `cat` replacement:
85bat > note.md # quickly create a new file
87bat header.md content.md footer.md > document.md
89bat -n main.rs # show line numbers (only)
91bat f - g # output 'f', then stdin, then 'g'.
94### Integration with other tools
98You can use the `-exec` option of `find` to preview all search results with `bat`:
103If you happen to use [`fd`](https://github.com/sharkdp/fd), you can use the `-X`/`--exec-batch` option to do the same:
110`bat` can be combined with `tail -f` to continuously monitor a given file with syntax highlighting.
112tail -f /var/log/pacman.log | bat --paging=never -l log
114Note that we have to switch off paging in order for this to work. We have also specified the syntax
115explicitly (`-l log`), as it can not be auto-detected in this case.
119You can combine `bat` with `git show` to view an older version of a given file with proper syntax
122git show v0.6.0:src/main.rs | bat -l rs
127The line numbers and Git modification markers in the output of `bat` can make it hard to copy
128the contents of a file. To prevent this, you can call `bat` with the `-p`/`--plain` option or
129simply pipe the output into `xclip`:
133`bat` will detect that the output is being redirected and print the plain file contents.
137`bat` can be used as a pager for `man`. It can be used like this:
139export MANPAGER="sh -c 'col -b | bat -l man -p'"
144The [Manpage syntax](assets/syntaxes/Manpage.sublime-syntax) is developed in this repository and still needs some work.
148[](https://repology.org/project/bat/versions)
151*... and other Debian-based Linux distributions.*
153Download the latest `.deb` package from the [release page](https://github.com/sharkdp/bat/releases)
156sudo dpkg -i bat_0.12.1_amd64.deb # adapt version number and architecture
161You can install [the `bat` package](https://pkgs.alpinelinux.org/packages?name=bat)
162from the official sources, provided you have the appropriate repository enabled:
170You can install [the `bat` package](https://www.archlinux.org/packages/community/x86_64/bat/)
171from the official sources:
179You can install [the `bat` package](https://koji.fedoraproject.org/koji/packageinfo?packageID=27506) from the official [Fedora Modular](https://docs.fedoraproject.org/en-US/modularity/using-modules/) repository.
187You can install [the `bat` package](https://packages.gentoo.org/packages/sys-apps/bat)
188from the official sources:
196You can install `bat` via xbps-install:
203You can install a precompiled [`bat` package](https://www.freshports.org/textproc/bat) with pkg:
209or build it on your own from the FreeBSD ports:
212cd /usr/ports/textproc/bat
218You can install `bat` using the [nix package manager](https://nixos.org/nix):
226You can install `bat` with zypper:
234You can install `bat` with [Homebrew](http://braumeister.org/formula/bat):
242You can download prebuilt binaries from the [Release page](https://github.com/sharkdp/bat/releases),
243or install it with [scoop](https://scoop.sh/) or [Chocolatey](https://chocolatey.org):
253[See below](#using-bat-on-windows) for notes.
257There is a [Docker image](https://hub.docker.com/r/danlynn/bat/) that you can use to run `bat` in a container:
259docker pull danlynn/bat
260alias bat='docker run -it --rm -e BAT_THEME -e BAT_STYLE -e BAT_TABS -v "$(pwd):/myapp" danlynn/bat'
265You can install `bat` with [Ansible](https://www.ansible.com/):
268# Install role on local machine
269ansible-galaxy install aeimer.install_bat
274# Playbook to install bat
280- [Ansible Galaxy](https://galaxy.ansible.com/aeimer/install_bat)
281- [GitHub](https://github.com/aeimer/ansible-install-bat)
283This should work with the following distributions:
285- ARM (eg. Raspberry PI)
293Check out the [Release page](https://github.com/sharkdp/bat/releases) for
294prebuilt versions of `bat` for many different architectures. Statically-linked
295binaries are also available: look for archives with `musl` in the file name.
299If you want to build `bat` from source, you need Rust 1.35 or
300higher. You can then use `cargo` to build everything:
306You may have to install `cmake` and the `libz` development package
307(`libz-dev` or `libz-devel`) in order for the build to succeed.
311### Highlighting theme
313Use `bat --list-themes` to get a list of all available themes for syntax
314highlighting. To select the `TwoDark` theme, call `bat` with the
315`--theme=TwoDark` option or set the `BAT_THEME` environment variable to
316`TwoDark`. Use `export BAT_THEME="TwoDark"` in your shell's startup file to
317make the change permanent. Alternatively, use `bat`s
318[configuration file](https://github.com/sharkdp/bat#configuration-file).
320If you want to preview the different themes on a custom file, you can use
321the following command (you need [`fzf`](https://github.com/junegunn/fzf) for this):
323bat --list-themes | fzf --preview="bat --theme={} --color=always /path/to/file"
326`bat` looks good on a dark background by default. However, if your terminal uses a
327light background, some themes like `GitHub` or `OneHalfLight` will work better for you.
328You can also use a custom theme by following the
329['Adding new themes' section below](https://github.com/sharkdp/bat#adding-new-themes).
333You can use the `--style` option to control the appearance of `bat`s output.
334You can use `--style=numbers,changes`, for example, to show only Git changes
335and line numbers but no grid and no file header. Set the `BAT_STYLE` environment
336variable to make these changes permanent or use `bat`s
337[configuration file](https://github.com/sharkdp/bat#configuration-file).
339### Adding new syntaxes / language definitions
341`bat` uses the excellent [`syntect`](https://github.com/trishume/syntect/)
342library for syntax highlighting. `syntect` can read any
343[Sublime Text `.sublime-syntax` file](https://www.sublimetext.com/docs/3/syntax.html)
344and theme. To add new syntax definitions, do the following.
346Create a folder with syntax definition files:
349mkdir -p "$(bat --config-dir)/syntaxes"
350cd "$(bat --config-dir)/syntaxes"
352# Put new '.sublime-syntax' language definition files
353# in this folder (or its subdirectories), for example:
354git clone https://github.com/tellnobody1/sublime-purescript-syntax
357Now use the following command to parse these files into a binary cache:
363Finally, use `bat --list-languages` to check if the new languages are available.
365If you ever want to go back to the default settings, call:
373This works very similar to how we add new syntax definitions.
375First, create a folder with the new syntax highlighting themes:
377mkdir -p "$(bat --config-dir)/themes"
378cd "$(bat --config-dir)/themes"
380# Download a theme in '.tmTheme' format, for example:
381git clone https://github.com/greggb/sublime-snazzy
383# Update the binary cache
387Finally, use `bat --list-themes` to check if the new themes are available.
389### Using a different pager
391`bat` uses the pager that is specified in the `PAGER` environment variable. If this variable is not
392set, `less` is used by default. If you want to use a different pager, you can either modify the
393`PAGER` variable or set the `BAT_PAGER` environment variable to override what is specified in
396If you want to pass command-line arguments to the pager, you can also set them via the
397`PAGER`/`BAT_PAGER` variables:
400export BAT_PAGER="less -RF"
403Instead of using environment variables, you can also use `bat`s [configuration file](https://github.com/sharkdp/bat#configuration-file) to configure the pager (`--pager` option).
405**Note**: By default, if the pager is set to `less` (and no command-line options are specified),
406`bat` will pass the following command line
407options to the pager: `-R`/`--RAW-CONTROL-CHARS`, `-F`/`--quit-if-one-screen` and `-X`/`--no-init`.
408The first (`-R`) is needed to interpret ANSI colors correctly. The second option (`-F`) instructs
409less to exit immediately if the output size is smaller than the vertical size of the terminal.
410This is convenient for small files because you do not have to press `q` to quit the pager. The
411third option (`-X`) is needed to fix a bug with the `--quit-if-one-screen` feature in old versions
412of `less`. Unfortunately, it also breaks mouse-wheel support in `less`. If you want to enable
413mouse-wheel scrolling, you can either pass just `-R` (as in the example above, this will disable
414the quit-if-one-screen feature), or you can use a recent version of `less` and pass `-RF` which
415will hopefully enable both quit-if-one-screen and mouse-wheel scrolling.
417If scrolling still doesn't work for you, you can try to pass the `-S` option in addition.
421If you make use of the dark mode feature in macOS, you might want to configure `bat` to use a different
422theme based on the OS theme. The following snippet uses the `default` theme when in the light mode
423and the `GitHub` theme when in the dark mode.
426alias cat="bat --theme=\$(defaults read -globalDomain AppleInterfaceStyle &> /dev/null && echo default || echo GitHub)"
431`bat` can also be customized with a configuration file. The location of the file is dependent
432on your operating system. To get the default path for your system, call
437Alternatively, you can use the `BAT_CONFIG_PATH` environment variable to point `bat` to a
438non-default location of the configuration file:
440export BAT_CONFIG_PATH="/path/to/bat.conf"
445The configuration file is a simple list of command line arguments. Use `bat --help` to see a full list of possible options and values. In addition, you can add comments by prepending a line with the `#` character.
447Example configuration file:
449# Set the theme to "TwoDark"
452# Show line numbers, Git modifications and file header (but no grid)
453--style="numbers,changes,header"
455# Use italic text on the terminal (not supported on all terminals)
458# Add mouse scrolling support in less (does not work with older
462# Use C++ syntax (instead of C) for .h header files
465# Use "gitignore" highlighting for ".ignore" files
466--map-syntax .ignore:.gitignore
469## Using `bat` on Windows
471`bat` mostly works out-of-the-box on Windows, but a few features may need extra configuration.
475Windows only includes a very limited pager in the form of `more`. You can download a Windows binary
476for `less` [from its homepage](http://www.greenwoodsoftware.com/less/download.html) or [through
477Chocolatey](https://chocolatey.org/packages/Less). To use it, place the binary in a directory in
478your `PATH` or [define an environment variable](#using-a-different-pager). The [Chocolatey package](#on-windows) installs `less` automatically.
482Windows 10 natively supports colors in both `conhost.exe` (Command Prompt) and PowerShell since
483[v1511](https://en.wikipedia.org/wiki/Windows_10_version_history#Version_1511_(November_Update)), as
484well as in newer versions of bash. On earlier versions of Windows, you can use
485[Cmder](http://cmder.net/), which includes [ConEmu](https://conemu.github.io/).
487**Note:** The Git and MSYS versions of `less` do not correctly interpret colors on Windows. If you
488don’t have any other pagers installed, you can disable paging entirely by passing `--paging=never`
489or by setting `BAT_PAGER` to an empty string.
493`bat` on Windows does not natively support Cygwin's unix-style paths (`/cygdrive/*`). When passed an absolute cygwin path as an argument, `bat` will encounter the following error: `The system cannot find the path specified. (os error 3)`
495This can be solved by creating a wrapper or adding the following function to your `.bash_profile` file:
501 for index in $(seq 0 ${#args[@]}) ; do
502 case "${args[index]}" in
504 *) [ -e "${args[index]}" ] && args[index]="$(cygpath --windows "${args[index]}")";;
507 command bat "${args[@]}"
513### Terminals & colors
515`bat` handles terminals *with* and *without* truecolor support. However, the colors in the syntax
516highlighting themes are not optimized for 8-bit colors and it is therefore strongly recommended
517that you use a terminal with 24-bit truecolor support (`terminator`, `konsole`, `iTerm2`, ...).
518See [this article](https://gist.github.com/XVilka/8346728) for more details and a full list of
519terminals with truecolor support.
521Make sure that your truecolor terminal sets the `COLORTERM` variable to either `truecolor` or
522`24bit`. Otherwise, `bat` will not be able to determine whether or not 24-bit escape sequences
523are supported (and fall back to 8-bit colors).
525### Line numbers and grid are hardly visible
527Please try a different theme (see `bat --list-themes` for a list). The `OneHalfDark` and
528`OneHalfLight` themes provide grid and line colors that are brighter.
533# Recursive clone to retrieve all submodules
534git clone --recursive https://github.com/sharkdp/bat
536# Build (debug version)
540# Run unit tests and integration tests
543# Install (release version)
546# Build a bat binary with modified syntaxes and themes
553- [sharkdp](https://github.com/sharkdp)
554- [eth-p](https://github.com/eth-p)
556## Project goals and alternatives
558`bat` tries to achieve the following goals:
560- Provide beautiful, advanced syntax highlighting
561- Integrate with Git to show file modifications
562- Be a drop-in replacement for (POSIX) `cat`
563- Offer a user-friendly command-line interface
565There are a lot of alternatives, if you are looking for similar programs. See
566[this document](doc/alternatives.md) for a comparison.
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