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# Usage
The main way to use delta is to configure it as the pager for git: see [Configuration](./configuration.md).
Delta can also be used as a shorthand for diffing two files, even if they are not in a git repo: the following two commands do the same thing:
```sh
delta /somewhere/a.txt /somewhere/else/b.txt
git diff /somewhere/a.txt /somewhere/else/b.txt
```
You can also use [process substitution](https://en.wikipedia.org/wiki/Process_substitution) shell syntax with delta, e.g.
```sh
delta <(sort file1) <(sort file2)
```
In addition to git output, delta handles standard unified diff format, e.g. `diff -u a.txt b.txt | delta`.
For Mercurial, you can add delta, with its command line options, to the `[pager]` section of `.hgrc`.
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