2 <img src="doc/logo-header.svg" alt="bat - a cat clone with wings"><br>
3 <a href="https://travis-ci.org/sharkdp/bat"><img src="https://travis-ci.org/sharkdp/bat.svg?branch=master" alt="Build Status"></a>
4 <a href="https://ci.appveyor.com/project/sharkdp/bat"><img src="https://ci.appveyor.com/api/projects/status/cptsmtbiwbnr2vhf/branch/master?svg=true"></a>
5 <img src="https://img.shields.io/crates/l/bat.svg" alt="license">
6 <a href="https://crates.io/crates/bat"><img src="https://img.shields.io/crates/v/bat.svg?colorB=319e8c" alt="Version info"></a><br>
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">日本語</a>][<a href="doc/README-ko.md">한국어</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:
110With [`batgrep`](https://github.com/eth-p/bat-extras/blob/master/doc/batgrep.md), `bat` can be used as the printer for [`ripgrep`](https://github.com/BurntSushi/ripgrep) search results.
118`bat` can be combined with `tail -f` to continuously monitor a given file with syntax highlighting.
120tail -f /var/log/pacman.log | bat --paging=never -l log
122Note that we have to switch off paging in order for this to work. We have also specified the syntax
123explicitly (`-l log`), as it can not be auto-detected in this case.
127You can combine `bat` with `git show` to view an older version of a given file with proper syntax
130git show v0.6.0:src/main.rs | bat -l rs
133Note that syntax highlighting within diffs is currently not supported. If you are looking for this, check out [`delta`](https://github.com/dandavison/delta).
137The line numbers and Git modification markers in the output of `bat` can make it hard to copy
138the contents of a file. To prevent this, you can call `bat` with the `-p`/`--plain` option or
139simply pipe the output into `xclip`:
143`bat` will detect that the output is being redirected and print the plain file contents.
147`bat` can be used as a colorizing pager for `man`, by setting the
148`MANPAGER` environment variable:
151export MANPAGER="sh -c 'col -bx | bat -l man -p'"
155It might also be necessary to set `MANROFFOPT="-c"` if you experience
158If you prefer to have this bundled in a new command, you can also use [`batman`](https://github.com/eth-p/bat-extras/blob/master/doc/batman.md).
160Note that the [Manpage syntax](assets/syntaxes/02_Extra/Manpage.sublime-syntax) is developed in this repository and still needs some work.
162#### `prettier` / `shfmt` / `rustfmt`
164The [`prettybat`](https://github.com/eth-p/bat-extras/blob/master/doc/prettybat.md) script is a wrapper that will format code and print it with `bat`.
169[](https://repology.org/project/bat/versions)
172*... and other Debian-based Linux distributions.*
174You can install [the Ubuntu `bat` package](https://packages.ubuntu.com/eoan/bat) or [the Debian `bat` package](https://packages.debian.org/sid/bat) since Ubuntu Eoan 19.10 or Debian unstable sid.
180If you want to run the latest release of bat or if you are on older versions of Ubuntu/Debian, download the latest `.deb` package from the [release page](https://github.com/sharkdp/bat/releases)
183sudo dpkg -i bat_0.13.0_amd64.deb # adapt version number and architecture
188You can install [the `bat` package](https://pkgs.alpinelinux.org/packages?name=bat)
189from the official sources, provided you have the appropriate repository enabled:
197You can install [the `bat` package](https://www.archlinux.org/packages/community/x86_64/bat/)
198from the official sources:
206You 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.
214You can install [the `bat` package](https://packages.gentoo.org/packages/sys-apps/bat)
215from the official sources:
223You can install `bat` via xbps-install:
230You can install a precompiled [`bat` package](https://www.freshports.org/textproc/bat) with pkg:
236or build it on your own from the FreeBSD ports:
239cd /usr/ports/textproc/bat
245You can install `bat` using the [nix package manager](https://nixos.org/nix):
253You can install `bat` with zypper:
261You can install `bat` with [Homebrew](http://braumeister.org/formula/bat):
267Or install `bat` with [MacPorts](https://ports.macports.org/port/bat/summary):
275There are a few options to install `bat` on Windows. Once you have installed `bat`,
276take a look at the ["Using `bat` on Windows"](#using-bat-on-windows) section.
280You can install `bat` via [Chocolatey](https://chocolatey.org/packages/Bat):
287You can install `bat` via [scoop](https://scoop.sh/):
292You will need to install the [Visual C++ Redistributable](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) package.
294#### From prebuilt binaries:
296You can download prebuilt binaries from the [Release page](https://github.com/sharkdp/bat/releases),
298You will need to install the [Visual C++ Redistributable](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) package.
302There is a [Docker image](https://hub.docker.com/r/danlynn/bat/) that you can use to run `bat` in a container:
304docker pull danlynn/bat
305alias bat='docker run -it --rm -e BAT_THEME -e BAT_STYLE -e BAT_TABS -v "$(pwd):/myapp" danlynn/bat'
310You can install `bat` with [Ansible](https://www.ansible.com/):
313# Install role on local machine
314ansible-galaxy install aeimer.install_bat
319# Playbook to install bat
325- [Ansible Galaxy](https://galaxy.ansible.com/aeimer/install_bat)
326- [GitHub](https://github.com/aeimer/ansible-install-bat)
328This should work with the following distributions:
330- ARM (eg. Raspberry PI)
338Check out the [Release page](https://github.com/sharkdp/bat/releases) for
339prebuilt versions of `bat` for many different architectures. Statically-linked
340binaries are also available: look for archives with `musl` in the file name.
344If you want to build `bat` from source, you need Rust 1.37 or
345higher. You can then use `cargo` to build everything:
351On some platforms, you might need to install `llvm` and/or `libclang-dev`.
355### Highlighting theme
357Use `bat --list-themes` to get a list of all available themes for syntax
358highlighting. To select the `TwoDark` theme, call `bat` with the
359`--theme=TwoDark` option or set the `BAT_THEME` environment variable to
360`TwoDark`. Use `export BAT_THEME="TwoDark"` in your shell's startup file to
361make the change permanent. Alternatively, use `bat`s
362[configuration file](https://github.com/sharkdp/bat#configuration-file).
364If you want to preview the different themes on a custom file, you can use
365the following command (you need [`fzf`](https://github.com/junegunn/fzf) for this):
367bat --list-themes | fzf --preview="bat --theme={} --color=always /path/to/file"
370`bat` looks good on a dark background by default. However, if your terminal uses a
371light background, some themes like `GitHub` or `OneHalfLight` will work better for you.
372You can also use a custom theme by following the
373['Adding new themes' section below](https://github.com/sharkdp/bat#adding-new-themes).
377You can use the `--style` option to control the appearance of `bat`s output.
378You can use `--style=numbers,changes`, for example, to show only Git changes
379and line numbers but no grid and no file header. Set the `BAT_STYLE` environment
380variable to make these changes permanent or use `bat`s
381[configuration file](https://github.com/sharkdp/bat#configuration-file).
383### Adding new syntaxes / language definitions
385`bat` uses the excellent [`syntect`](https://github.com/trishume/syntect/)
386library for syntax highlighting. `syntect` can read any
387[Sublime Text `.sublime-syntax` file](https://www.sublimetext.com/docs/3/syntax.html)
388and theme. To add new syntax definitions, do the following.
390Create a folder with syntax definition files:
393mkdir -p "$(bat --config-dir)/syntaxes"
394cd "$(bat --config-dir)/syntaxes"
396# Put new '.sublime-syntax' language definition files
397# in this folder (or its subdirectories), for example:
398git clone https://github.com/tellnobody1/sublime-purescript-syntax
401Now use the following command to parse these files into a binary cache:
407Finally, use `bat --list-languages` to check if the new languages are available.
409If you ever want to go back to the default settings, call:
417This works very similar to how we add new syntax definitions.
419First, create a folder with the new syntax highlighting themes:
421mkdir -p "$(bat --config-dir)/themes"
422cd "$(bat --config-dir)/themes"
424# Download a theme in '.tmTheme' format, for example:
425git clone https://github.com/greggb/sublime-snazzy
427# Update the binary cache
431Finally, use `bat --list-themes` to check if the new themes are available.
433### Using a different pager
435`bat` uses the pager that is specified in the `PAGER` environment variable. If this variable is not
436set, `less` is used by default. If you want to use a different pager, you can either modify the
437`PAGER` variable or set the `BAT_PAGER` environment variable to override what is specified in
440If you want to pass command-line arguments to the pager, you can also set them via the
441`PAGER`/`BAT_PAGER` variables:
444export BAT_PAGER="less -RF"
447Instead 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).
449**Note**: By default, if the pager is set to `less` (and no command-line options are specified),
450`bat` will pass the following command line options to the pager: `-R`/`--RAW-CONTROL-CHARS`,
451`-F`/`--quit-if-one-screen` and `-X`/`--no-init`. The last option (`-X`) is only used for `less`
452versions older than 530.
454The `-R` option is needed to interpret ANSI colors correctly. The second option (`-F`) instructs
455less to exit immediately if the output size is smaller than the vertical size of the terminal.
456This is convenient for small files because you do not have to press `q` to quit the pager. The
457third option (`-X`) is needed to fix a bug with the `--quit-if-one-screen` feature in old versions
458of `less`. Unfortunately, it also breaks mouse-wheel support in `less`.
460If you want to enable mouse-wheel scrolling on older versions of `less`, you can pass just `-R` (as
461in the example above, this will disable the quit-if-one-screen feature). For less 530 or newer,
462it should work out of the box.
466If you make use of the dark mode feature in macOS, you might want to configure `bat` to use a different
467theme based on the OS theme. The following snippet uses the `default` theme when in the light mode
468and the `GitHub` theme when in the dark mode.
471alias cat="bat --theme=\$(defaults read -globalDomain AppleInterfaceStyle &> /dev/null && echo default || echo GitHub)"
476`bat` can also be customized with a configuration file. The location of the file is dependent
477on your operating system. To get the default path for your system, call
482Alternatively, you can use the `BAT_CONFIG_PATH` environment variable to point `bat` to a
483non-default location of the configuration file:
485export BAT_CONFIG_PATH="/path/to/bat.conf"
488A default configuration file can be created with the `--generate-config-file` option.
490bat --generate-config-file
495The 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.
497Example configuration file:
499# Set the theme to "TwoDark"
502# Show line numbers, Git modifications and file header (but no grid)
503--style="numbers,changes,header"
505# Use italic text on the terminal (not supported on all terminals)
508# Use C++ syntax for .ino files
509--map-syntax "*.ino:C++"
511# Use ".gitignore"-style highlighting for ".ignore" files
512--map-syntax ".ignore:Git Ignore"
515## Using `bat` on Windows
517`bat` mostly works out-of-the-box on Windows, but a few features may need extra configuration.
521Windows only includes a very limited pager in the form of `more`. You can download a Windows binary
522for `less` [from its homepage](http://www.greenwoodsoftware.com/less/download.html) or [through
523Chocolatey](https://chocolatey.org/packages/Less). To use it, place the binary in a directory in
524your `PATH` or [define an environment variable](#using-a-different-pager). The [Chocolatey package](#on-windows) installs `less` automatically.
528Windows 10 natively supports colors in both `conhost.exe` (Command Prompt) and PowerShell since
529[v1511](https://en.wikipedia.org/wiki/Windows_10_version_history#Version_1511_(November_Update)), as
530well as in newer versions of bash. On earlier versions of Windows, you can use
531[Cmder](http://cmder.net/), which includes [ConEmu](https://conemu.github.io/).
533**Note:** The Git and MSYS versions of `less` do not correctly interpret colors on Windows. If you
534don’t have any other pagers installed, you can disable paging entirely by passing `--paging=never`
535or by setting `BAT_PAGER` to an empty string.
539`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)`
541This can be solved by creating a wrapper or adding the following function to your `.bash_profile` file:
547 for index in $(seq 0 ${#args[@]}) ; do
548 case "${args[index]}" in
550 *) [ -e "${args[index]}" ] && args[index]="$(cygpath --windows "${args[index]}")";;
553 command bat "${args[@]}"
559### Terminals & colors
561`bat` handles terminals *with* and *without* truecolor support. However, the colors in the syntax
562highlighting themes are not optimized for 8-bit colors and it is therefore strongly recommended
563that you use a terminal with 24-bit truecolor support (`terminator`, `konsole`, `iTerm2`, ...).
564See [this article](https://gist.github.com/XVilka/8346728) for more details and a full list of
565terminals with truecolor support.
567Make sure that your truecolor terminal sets the `COLORTERM` variable to either `truecolor` or
568`24bit`. Otherwise, `bat` will not be able to determine whether or not 24-bit escape sequences
569are supported (and fall back to 8-bit colors).
571### Line numbers and grid are hardly visible
573Please try a different theme (see `bat --list-themes` for a list). The `OneHalfDark` and
574`OneHalfLight` themes provide grid and line colors that are brighter.
578`bat` natively supports UTF-8 as well as UTF-16. For every other file encoding, you may need to
579convert to UTF-8 first because the encodings can typically not be auto-detected. You can `iconv`
581Example: if you have a PHP file in Latin-1 (ISO-8859-1) encoding, you can call:
583iconv -f ISO-8859-1 -t UTF-8 my-file.php | bat
585Note: you might have to use the `-l`/`--language` option if the syntax can not be auto-detected
591# Recursive clone to retrieve all submodules
592git clone --recursive https://github.com/sharkdp/bat
594# Build (debug version)
598# Run unit tests and integration tests
601# Install (release version)
604# Build a bat binary with modified syntaxes and themes
611- [sharkdp](https://github.com/sharkdp)
612- [eth-p](https://github.com/eth-p)
614## Project goals and alternatives
616`bat` tries to achieve the following goals:
618- Provide beautiful, advanced syntax highlighting
619- Integrate with Git to show file modifications
620- Be a drop-in replacement for (POSIX) `cat`
621- Offer a user-friendly command-line interface
623There are a lot of alternatives, if you are looking for similar programs. See
624[this document](doc/alternatives.md) for a comparison.
627Copyright (c) 2018-2020 [bat-developers](https://github.com/sharkdp/bat).
629`bat` is distributed under the terms of both the MIT License and the Apache License 2.0.
631See the [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT) files for license details.
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