1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
|
<p align="center">
<img src="doc/logo-header.svg" alt="bat - a cat clone with wings"><br>
<a href="https://github.com/sharkdp/bat/actions?query=workflow%3ACICD"><img src="https://github.com/sharkdp/bat/workflows/CICD/badge.svg" alt="Build Status"></a>
<img src="https://img.shields.io/crates/l/bat.svg" alt="license">
<a href="https://crates.io/crates/bat"><img src="https://img.shields.io/crates/v/bat.svg?colorB=319e8c" alt="Version info"></a><br>
A <i>cat(1)</i> clone with syntax highlighting and Git integration.
</p>
<p align="center">
<a href="#syntax-highlighting">Key Features</a> •
<a href="#how-to-use">How To Use</a> •
<a href="#installation">Installation</a> •
<a href="#customization">Customization</a> •
<a href="#project-goals-and-alternatives">Project goals, alternatives</a><br>
[English]
[<a href="doc/README-zh.md">中文</a>]
[<a href="doc/README-ja.md">日本語</a>]
[<a href="doc/README-ko.md">한국어</a>]
[<a href="doc/README-ru.md">Русский</a>]
</p>
### Sponsors
A special *thank you* goes to our biggest <a href="doc/sponsors.md">sponsors</a>:<br>
<a href="https://workos.com/?utm_campaign=github_repo&utm_medium=referral&utm_content=bat&utm_source=github">
<img src="doc/sponsors/workos-logo-white-bg.svg" width="200" alt="WorkOS">
<br>
<strong>Your app, enterprise-ready.</strong>
<br>
<sub>Start selling to enterprise customers with just a few lines of code.</sub>
<br>
<sup>Add Single Sign-On (and more) in minutes instead of months.</sup>
</a>
### Syntax highlighting
`bat` supports syntax highlighting for a large number of programming and markup
languages:
![Syntax highlighting example](https://imgur.com/rGsdnDe.png)
### Git integration
`bat` communicates with `git` to show modifications with respect to the index
(see left side bar):
![Git integration example](https://i.imgur.com/2lSW4RE.png)
### Show non-printable characters
You can use the `-A`/`--show-all` option to show and highlight non-printable
characters:
![Non-printable character example](https://i.imgur.com/WndGp9H.png)
### Automatic paging
By default, `bat` pipes its own output to a pager (e.g. `less`) if the output is too large for one screen.
If you would rather `bat` work like `cat` all the time (never page output), you can set `--paging=never` as an option, either on the command line or in your configuration file.
If you intend to alias `cat` to `bat` in your shell configuration, you can use `alias cat='bat --paging=never'` to preserve the default behavior.
#### File concatenation
Even with a pager set, you can still use `bat` to concatenate files :wink:.
Whenever `bat` detects a non-interactive terminal (i.e. when you pipe into another process or into a file), `bat` will act as a drop-in replacement for `cat` and fall back to printing the plain file contents, regardless of the `--pager` option's value.
## How to use
Display a single file on the terminal
```bash
> bat README.md
```
Display multiple files at once
```bash
> bat src/*.rs
```
Read from stdin, determine the syntax automatically (note, highlighting will
only work if the syntax can be determined from the first line of the file,
usually through a shebang such as `#!/bin/sh`)
```bash
> curl -s https://sh.rustup.rs | bat
```
Read from stdin, specify the language explicitly
```bash
> yaml2json .travis.yml | json_pp | bat -l json
```
Show and highlight non-printable characters:
```bash
> bat -A /etc/hosts
```
Use it as a `cat` replacement:
```bash
bat > note.md # quickly create a new file
bat header.md content.md footer.md > document.md
bat -n main.rs # show line numbers (only)
bat f - g # output 'f', then stdin, then 'g'.
```
### Integration with other tools
#### `fzf`
You can use `bat` as a previewer for [`fzf`](https://github.com/junegunn/fzf). To do this,
use `bat`s `--color=always` option to force colorized output. You can also use `--line-range`
option to restrict the load times for long files:
```bash
fzf --preview 'bat --color=always --style=numbers --line-range=:500 {}'
```
For more information, see [`fzf`'s `README`](https://github.com/junegunn/fzf#preview-window).
#### `find` or `fd`
You can use the `-exec` option of `find` to preview all search results with `bat`:
```bash
find … -exec bat {} +
```
If you happen to use [`fd`](https://github.com/sharkdp/fd), you can use the `-X`/`--exec-batch` option to do the same:
```bash
fd … -X bat
```
#### `ripgrep`
With [`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.
```bash
batgrep needle src/
```
#### `tail -f`
`bat` can be combined with `tail -f` to continuously monitor a given file with syntax highlighting.
```bash
tail -f /var/log/pacman.log | bat --paging=never -l log
```
Note that we have to switch off paging in order for this to work. We have also specified the syntax
explicitly (`-l log`), as it can not be auto-detected in this case.
#### `git`
You can combine `bat` with `git show` to view an older version of a given file with proper syntax
highlighting:
```bash
git show v0.6.0:src/main.rs | bat -l rs
```
#### `git diff`
You can combine `bat` with `git diff` to view lines around code changes with proper syntax
highlighting:
```bash
batdiff() {
git diff --name-only --relative --diff-filter=d | xargs bat --diff
}
```
If you prefer to use this as a separate tool, check out `batdiff` in [`bat-extras`](https://github.com/eth-p/bat-extras).
If you are looking for more support for git and diff operations, check out [`delta`](https://github.com/dandavison/delta).
#### `xclip`
The line numbers and Git modification markers in the output of `bat` can make it hard to copy
the contents of a file. To prevent this, you can call `bat` with the `-p`/`--plain` option or
simply pipe the output into `xclip`:
```bash
bat main.cpp | xclip
```
`bat` will detect that the output is being redirected and print the plain file contents.
#### `man`
`bat` can be used as a colorizing pager for `man`, by setting the
`MANPAGER` environment variable:
```bash
export MANPAGER="sh -c 'col -bx | bat -l man -p'"
man 2 select
```
(replace `bat` with `batcat` if you are on Debian or Ubuntu)
It might also be necessary to set `MANROFFOPT="-c"` if you experience
formatting problems.
If 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).
Note that the [Manpage syntax](assets/syntaxes/02_Extra/Manpage.sublime-syntax) is developed in this repository and still needs some work.
Also, note that this will [not work](https://github.com/sharkdp/bat/issues/1145) with Mandocs `man` implementation.
#### `prettier` / `shfmt` / `rustfmt`
The [`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`.
#### Highlighting `--help` messages
You can use `bat` to colorize help text: `$ cp --help | bat -plhelp`
You can also use a wrapper around this:
```bash
# in your .bashrc/.zshrc/*rc
alias bathelp='bat --plain --language=help'
help() {
"$@" --help 2>&1 | bathelp
}
```
Then you can do `$ help cp` or `$ help git commit`.
Please report any issues with the help syntax in [this repository](https://github.com/victor-gp/cmd-help-sublime-syntax).
## Installation
[![Packaging status](https://repology.org/badge/vertical-allrepos/bat-cat.svg)](https://repology.org/project/bat-cat/versions)
### On Ubuntu (using `apt`)
*... and other Debian-based Linux distributions.*
`bat` is available on [Ubuntu since 20.04 ("Focal")](https://packages.ubuntu.com/search?keywords=bat&exact=1) and [Debian since August 2021 (Debian 11 - "Bullseye")](https://packages.debian.org/bullseye/bat).
If your Ubuntu/Debian installation is new enough you can simply run:
```bash
sudo apt install bat
```
**Important**: If you install `bat` this way, please note that the executable may be installed as `batcat` instead of `bat` (due to [a name
clash with another package](https://github.com/sharkdp/bat/issues/982)). You can set up a `bat -> batcat` symlink or alias to prevent any issues that may come up because of this and to be consistent with other distributions:
``` bash
mkdir -p ~/.local/bin
ln -s /usr/bin/batcat ~/.local/bin/bat
```
### On Ubuntu (using most recent `.deb` packages)
*... and other Debian-based Linux distributions.*
If the package has not yet been promoted to your Ubuntu/Debian installation, or you want
the most recent release of `bat`, download the latest `.deb` package from the
[release page](https://github.com/sharkdp/bat/releases) and install it via:
```bash
sudo dpkg -i bat_0.18.3_amd64.deb # adapt version number and architecture
```
### On Alpine Linux
You can install [the `bat` package](https://pkgs.alpinelinux.org/packages?name=bat)
from the official sources, provided you have the appropriate repository enabled:
```bash
apk add bat
```
### On Arch Linux
You can install [the `bat` package](https://www.archlinux.org/packages/community/x86_64/bat/)
from the official sources:
```bash
pacman -S bat
```
### On Fedora
You 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.
```bash
dnf install bat
```
### On Funtoo Linux
You can install [the `bat` package](https://github.com/funtoo/dev-kit/tree/1.4-release/sys-apps/bat) from dev-kit.
```bash
emerge sys-apps/bat
```
### On Gentoo Linux
You can install [the `bat` package](https://packages.gentoo.org/packages/sys-apps/bat)
from the official sources:
```bash
emerge sys-apps/bat
```
### On Void Linux
You can install `bat` via xbps-install:
```bash
xbps-install -S bat
```
### On Termux
You can install `bat` via pkg:
```bash
pkg install bat
```
### On FreeBSD
You can install a precompiled [`bat` package](https://www.freshports.org/textproc/bat) with pkg:
```bash
pkg install bat
```
or build it on your own from the FreeBSD ports:
```bash
cd /usr/ports/textproc/bat
make install
```
### On OpenBSD
You can install `bat` package using [`pkg_add(1)`](https://man.openbsd.org/pkg_add.1):
```bash
pkg_add bat
```
### Via nix
You can install `bat` using the [nix package manager](https://nixos.org/nix):
```bash
nix-env -i bat
```
### On openSUSE
You can install `bat` with zypper:
```bash
zypper install bat
```
### Via snap package
There is currently no recommended snap package available.
Existing packages may be available, but are not officially supported and may contain [issues](https://github.com/sharkdp/bat/issues/1519).
### On macOS (or Linux) via Homebrew
You can install `bat` with [Homebrew on MacOS](https://formulae.brew.sh/formula/bat) or [Homebrew on Linux](https://formulae.brew.sh/formula-linux/bat):
```bash
brew install bat
```
### On macOS via MacPorts
Or install `bat` with [MacPorts](https://ports.macports.org/port/bat/summary):
```bash
port install bat
```
### On Windows
There are a few options to install `bat` on Windows. Once you have installed `bat`,
take a look at the ["Using `bat` on Windows"](#using-bat-on-windows) section.
#### Prerequisites
You will need to install the [Visual C++ Redistributable](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) package.
#### With Chocolatey
You can install `bat` via [Chocolatey](https://chocolatey.org/packages/Bat):
```bash
choco install bat
```
#### With Scoop
You can install `bat` via [scoop](https://scoop.sh/):
```bash
scoop install bat
```
#### From prebuilt binaries:
You can download prebuilt binaries from the [Release page](https://github.com/sharkdp/bat/releases),
You will need to install the [Visual C++ Redistributable](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) package.
### From binaries
Check out the [Release page](https://github.com/sharkdp/bat/releases) for
prebuilt versions of `bat` for many different architectures. Statically-linked
binaries are also available: look for archives with `musl` in the file name.
### From source
If you want to build `bat` from source, you need Rust 1.60.0 or
higher. You can then use `cargo` to build everything:
```bash
cargo install --locked bat
```
Note that additional files like the man page or shell completion
files can not be installed in this way. They will be generated by `cargo` and should be available in the cargo target folder (under `build`).
## Customization
### Highlighting theme
Use `bat --list-themes` to get a list of all available themes for syntax
highlighting. To select the `TwoDark` theme, call `bat` with the
`--theme=TwoDark` option or set the `BAT_THEME` environment variable to
`TwoDark`. Use `export BAT_THEME="TwoDark"` in your shell's startup file to
make the change permanent. Alternatively, use `bat`s
[configuration file](https://github.com/sharkdp/bat#configuration-file).
If you want to preview the different themes on a custom file, you can use
the following command (you need [`fzf`](https://github.com/junegunn/fzf) for this):
```bash
bat --list-themes | fzf --preview="bat --theme={} --color=always /path/to/file"
```
`bat` looks good on a dark background by default. However, if your terminal uses a
light background, some themes like `GitHub` or `OneHalfLight` will work better for you.
You can also use a custom theme by following the
['Adding new themes' section below](https://github.com/sharkdp/bat#adding-new-themes).
### 8-bit themes
`bat` has three themes that always use [8-bit colors](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors),
even when truecolor support is available:
- `ansi` looks decent on any terminal. It uses 3-bit colors: black, red, green,
yellow, blue, magenta, cyan, and white.
- `base16` is designed for [base16](https://github.com/chriskempson/base16) terminal themes. It uses
4-bit colors (3-bit colors plus bright variants) in accordance with the
[base16 styling guidelines](https://github.com/chriskempson/base16/blob/master/styling.md).
- `base16-256` is designed for [base16-shell](https://github.com/chriskempson/base16-shell).
It replaces certain bright colors with 8-bit colors from 16 to 21. **Do not** use this simply
because you have a 256-color terminal but are not using base16-shell.
Although these themes are more restricted, they have three advantages over truecolor themes. They:
- Enjoy maximum compatibility. Some terminal utilities do not support more than 3-bit colors.
- Adapt to terminal theme changes. Even for already printed output.
- Visually harmonize better with other terminal software.
### Output style
You can use the `--style` option to control the appearance of `bat`s output.
You can use `--style=numbers,changes`, for example, to show only Git changes
and line numbers but no grid and no file header. Set the `BAT_STYLE` environment
variable to make these changes permanent or use `bat`s
[configuration file](https://github.com/sharkdp/bat#configuration-file).
### Adding new syntaxes / language definitions
Should you find that a particular syntax is not available within `bat`, you can follow these
instructions to easily add new syntaxes to your current `bat` installation.
`bat` uses the excellent [`syntect`](https://github.com/trishume/syntect/)
library for syntax highlighting. `syntect` can read any
[Sublime Text `.sublime-syntax` file](https://www.sublimetext.com/docs/3/syntax.html)
and theme.
A good resource for finding Sublime Syntax packages is [Package Control](https://packagecontrol.io/). Once you found a
syntax:
1. Create a folder with syntax definition files:
```bash
mkdir -p "$(bat --config-dir)/syntaxes"
cd "$(bat --config-dir)/syntaxes"
# Put new '.sublime-syntax' language definition files
# in this folder (or its subdirectories), for example:
git clone https://github.com/tellnobody1/sublime-purescript-syntax
```
2. Now use the following command to parse these files into a binary cache:
```bash
bat cache --build
```
3. Finally, use `bat --list-languages` to check if the new languages are available.
If you ever want to go back to the default settings, call:
```bash
bat cache --clear
```
4. If you think that a specific syntax should be included in `bat` by default, please
consider opening a "syntax request" ticket after reading the policies and
instructions [here](doc/assets.md): [Open Syntax Request](https://github.com/sharkdp/bat/issues/new?labels=syntax-request&template=syntax_request.md).
### Adding new themes
This works very similar to how we add new syntax definitions.
First, create a folder with the new syntax highlighting themes:
```bash
mkdir -p "$(bat --config-dir)/themes"
cd "$(bat --config-dir)/themes"
# Download a theme in '.tmTheme' format, for example:
git clone https://github.com/greggb/sublime-snazzy
# Update the binary cache
bat cache --build
```
Finally, use `bat --list-themes` to check if the new themes are available.
### Adding or changing file type associations
You can add new (or change existing) file name patterns using the `--map-syntax`
command line option. The option takes an argument of the form `pattern:syntax` where
`pattern` is a glob pattern that is matched against the file name and
the absolute file path. The `syntax` part is the full name of a supported language
(use `bat --list-languages` for an overview).
**Note:** You probably want to use this option as [an entry in `bat`'s configuration file](#configuration-file)
for persistence instead of passing it on the command line as a one-off. Generally
you'd just use `-l` if you want to manually specify a language for a file.
Example: To use "INI" syntax highlighting for all files with a `.conf` file extension, use
```bash
--map-syntax='*.conf:INI'
```
Example: To open all files called `.ignore` (exact match) with the "Git Ignore" syntax, use:
```bash
--map-syntax='.ignore:Git Ignore'
```
Example: To open all `.conf` files in subfolders of `/etc/apache2` with the "Apache Conf"
syntax, use (this mapping is already built in):
```bash
--map-syntax='/etc/apache2/**/*.conf:Apache Conf'
```
### Using a different pager
`bat` uses the pager that is specified in the `PAGER` environment variable. If this variable is not
set, `less` is used by default. If you want to use a different pager, you can either modify the
`PAGER` variable or set the `BAT_PAGER` environment variable to override what is specified in
`PAGER`.
**Note**: If `PAGER` is `more` or `most`, `bat` will silently use `less` instead to ensure support for colors.
If you want to pass command-line arguments to the pager, you can also set them via the
`PAGER`/`BAT_PAGER` variables:
```bash
export BAT_PAGER="less -RF"
```
Instead 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).
**Note**: By default, if the pager is set to `less` (and no command-line options are specified),
`bat` will pass the following command line options to the pager: `-R`/`--RAW-CONTROL-CHARS`,
`-F`/`--quit-if-one-screen` and `-X`/`--no-init`. The last option (`-X`) is only used for `less`
versions older than 530.
The `-R` option is needed to interpret ANSI colors correctly. The second option (`-F`) instructs
less to exit immediately if the output size is smaller than the vertical size of the terminal.
This is convenient for small files because you do not have to press `q` to quit the pager. The
third option (`-X`) is needed to fix a bug with the `--quit-if-one-screen` feature in old versions
of `less`. Unfortunately, it also breaks mouse-wheel support in `less`.
If you want to enable mouse-wheel scrolling on older versions of `less`, you can pass just `-R` (as
in the example above, this will disable the quit-if-one-screen feature). For less 530 or newer,
it should work out of the box.
### Indentation
`bat` expands tabs to 4 spaces by itself, not relying on the pager. To change this, simply add the
`--tabs` argument with the number of spaces you want to be displayed.
**Note**: Defining tab stops for the pager (via the `--pager` argument by `bat`, or via the `LESS`
environment variable for `less`) won't be taken into account because the pager will already get
expanded spaces instead of tabs. This behaviour is added to avoid indentation issues caused by the
sidebar. Calling `bat` with `--tabs=0` will override it and let tabs be consumed by the pager.
### Dark mode
If you make use of the dark mode feature in macOS, you might want to configure `bat` to use a different
theme based on the OS theme. The following snippet uses the `default` theme when in the _dark mode_
and the `GitHub` theme when in the _light mode_.
```bash
alias cat="bat --theme=\$(defaults read -globalDomain AppleInterfaceStyle &> /dev/null && echo default || echo GitHub)"
```
## Configuration file
`bat` can also be customized with a configuration file. The location of the file is dependent
on your operating system. To get the default path for your system, call
```bash
bat --config-file
```
Alternatively, you can use the `BAT_CONFIG_PATH` environment variable to point `bat` to a
non-default location of the configuration file:
```bash
export BAT_CONFIG_PATH="/path/to/bat.conf"
```
A default configuration file can be created with the `--generate-config-file` option.
```bash
bat --generate-config-file
```
There is also now a systemwide configuration file, which is located under `/etc/bat/config` on
Linux and Mac OS and `C:\ProgramData\bat\config` on windows. If the system wide configuration
file is present, the content of the user configuration will simply be appended to it.
### Format
The 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.
Example configuration file:
```bash
# Set the theme to "TwoDark"
--theme="TwoDark"
# Show line numbers, Git modifications and file header (but no grid)
--style="numbers,changes,header"
# Use italic text on the terminal (not supported on all terminals)
--italic-text=always
# Use C++ syntax for Arduino .ino files
--map-syntax "*.ino:C++"
```
## Using `bat` on Windows
`bat` mostly works out-of-the-box on Windows, but a few features may need extra configuration.
### Prerequisites
You will need to install the [Visual C++ Redistributable](https://support.microsoft.com/en-us/help/2977003/the-latest-supported-visual-c-downloads) package.
### Paging
Windows only includes a very limited pager in the form of `more`. You can download a Windows binary
for `less` [from its homepage](http://www.greenwoodsoftware.com/less/download.html) or [through
Chocolatey](https://chocolatey.org/packages/Less). To use it, place the binary in a directory in
your `PATH` or [define an environment variable](#using-a-different-pager). The [Chocolatey package](#on-windows) installs `less` automatically.
### Colors
Windows 10 natively supports colors in both `conhost.exe` (Command Prompt) and PowerShell since
[v1511](https://en.wikipedia.org/wiki/Windows_10_version_history#Version_1511_(November_Update)), as
well as in newer versions of bash. On earlier versions of Windows, you can use
[Cmder](http://cmder.net/), which includes [ConEmu](https://conemu.github.io/).
**Note:** The Git and MSYS versions of `less` do not correctly interpret colors on Windows. If you
don’t have any other pagers installed, you can disable paging entirely by passing `--paging=never`
or by setting `BAT_PAGER` to an empty string.
### Cygwin
`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)`
This can be solved by creating a wrapper or adding the following function to your `.bash_profile` file:
```bash
bat() {
local index
local args=("$@")
for index in $(seq 0 ${#args[@]}) ; do
case "${args[index]}" in
-*) continue;;
*) [ -e "${args[index]}" ] && args[index]="$(cygpath --windows "${args[index]}")";;
esac
done
command bat "${args[@]}"
}
```
## Troubleshooting
### Garbled output
If an input file contains color codes or other ANSI escape sequences or control characters, `bat` will have problems
performing syntax highlighting and text wrapping, and thus the output can become garbled.
When displaying such files it is recommended to disable both syntax highlighting and wrapping by
passing the `--color=never --wrap=never` options to `bat`.
### Terminals & colors
`bat` handles terminals *with* and *without* truecolor support. However, the colors in most syntax
highlighting themes are not optimized for 8-bit colors. It is therefore strongly recommended
that you use a terminal with 24-bit truecolor support (`terminator`, `konsole`, `iTerm2`, ...),
or use one of the basic [8-bit themes](#8-bit-themes) designed for a restricted set of colors.
See [this article](https://gist.github.com/XVilka/8346728) for more details and a full list of
terminals with truecolor support.
Make sure that your truecolor terminal sets the `COLORTERM` variable to either `truecolor` or
`24bit`. Otherwise, `bat` will not be able to determine whether or not 24-bit escape sequences
are supported (and fall back to 8-bit colors).
### Line numbers and grid are hardly visible
Please try a different theme (see `bat --list-themes` for a list). The `OneHalfDark` and
`OneHalfLight` themes provide grid and line colors that are brighter.
### File encodings
`bat` natively supports UTF-8 as well as UTF-16. For every other file encoding, you may need to
convert to UTF-8 first because the encodings can typically not be auto-detected. You can `iconv`
to do so.
Example: if you have a PHP file in Latin-1 (ISO-8859-1) encoding, you can call:
``` bash
iconv -f ISO-8859-1 -t UTF-8 my-file.php | bat
```
Note: you might have to use the `-l`/`--language` option if the syntax can not be auto-detected
by `bat`.
## Development
```bash
# Recursive clone to retrieve all submodules
git clone --recursive https://github.com/sharkdp/bat
# Build (debug version)
cd bat
cargo build --bins
# Run unit tests and integration tests
cargo test
# Install (release version)
cargo install --path . --locked
# Build a bat binary with modified syntaxes and themes
bash assets/create.sh
cargo install --path . --locked --force
```
If you want to build an application that uses `bat`s pretty-printing
features as a library, check out the [the API documentation](https://docs.rs/bat/).
Note that you have to use either `regex-onig` or `regex-fancy` as a feature
when you depend on `bat` as a library.
## Contributing
Take a look at the [`CONTRIBUTING.md`](CONTRIBUTING.md) guide.
## Maintainers
- [sharkdp](https://github.com/sharkdp)
- [eth-p](https://github.com/eth-p)
- [keith-hall](https://github.com/keith-hall)
- [Enselic](https://github.com/Enselic)
## Security vulnerabilities
Please contact [David Peter](https://david-peter.de/) via email if you want to report a vulnerability in `bat`.
## Project goals and alternatives
`bat` tries to achieve the following goals:
- Provide beautiful, advanced syntax highlighting
- Integrate with Git to show file modifications
- Be a drop-in replacement for (POSIX) `cat`
- Offer a user-friendly command-line interface
There are a lot of alternatives, if you are looking for similar programs. See
[this document](doc/alternatives.md) for a comparison.
## License
Copyright (c) 2018-2021 [bat-developers](https://github.com/sharkdp/bat).
`bat` is made available under the terms of either the MIT License or the Apache License 2.0, at your option.
See the [LICENSE-APACHE](LICENSE-APACHE) and [LICENSE-MIT](LICENSE-MIT) files for license details.
|