Summary:
Meant to make tasks like #53728 easier. The `-n` flag enables line numbers, and the `-o` flag reduces noise by only showing the part of the line that matched (which in this case is just the trailing whitespace).

Pull Request resolved: #53733

Test Plan:
```
$ git checkout e937db5
```

Before:
```
$ (! git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu
The above files have trailing spaces; please remove them
```

After:

```
$ (! git grep -I -no ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu:1972:
The above files have trailing spaces; please remove them
```

Reviewed By: mruberry

Differential Revision: D26953538

Pulled By: samestep

fbshipit-source-id: 5f7d48b79f1a02e5e5a09fe00316ec350cfc340e

Summary:
Fixes

```
Run (! git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu
The above files have trailing spaces; please remove them
Error: Process completed with exit code 1.
```

Pull Request resolved: pytorch#53728

Reviewed By: ngimel

Differential Revision: D26953099

Pulled By: mruberry

fbshipit-source-id: 5f1ed2cd767de49447fcbd8e03cb3af7841cbcaf

Summary:
Meant to make tasks like pytorch#53728 easier. The `-n` flag enables line numbers, and the `-o` flag reduces noise by only showing the part of the line that matched (which in this case is just the trailing whitespace).

Pull Request resolved: pytorch#53733

Test Plan:
```
$ git checkout e937db5
```

Before:
```
$ (! git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu
The above files have trailing spaces; please remove them
```

After:

```
$ (! git grep -I -no ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu:1972:
The above files have trailing spaces; please remove them
```

Reviewed By: mruberry

Differential Revision: D26953538

Pulled By: samestep

fbshipit-source-id: 5f7d48b79f1a02e5e5a09fe00316ec350cfc340e

Summary:
Fixes

```
Run (! git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu
The above files have trailing spaces; please remove them
Error: Process completed with exit code 1.
```

Pull Request resolved: pytorch#53728

Reviewed By: ngimel

Differential Revision: D26953099

Pulled By: mruberry

fbshipit-source-id: 5f1ed2cd767de49447fcbd8e03cb3af7841cbcaf

Summary:
Meant to make tasks like pytorch#53728 easier. The `-n` flag enables line numbers, and the `-o` flag reduces noise by only showing the part of the line that matched (which in this case is just the trailing whitespace).

Pull Request resolved: pytorch#53733

Test Plan:
```
$ git checkout 6d7f62f
```

Before:
```
$ (! git grep -I -l ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu
The above files have trailing spaces; please remove them
```

After:

```
$ (! git grep -I -no ' $' -- . ':(exclude)**/contrib/**' ':(exclude)third_party' || (echo "The above files have trailing spaces; please remove them"; false))
aten/src/ATen/native/cuda/BatchLinearAlgebra.cu:1972:
The above files have trailing spaces; please remove them
```

Reviewed By: mruberry

Differential Revision: D26953538

Pulled By: samestep

fbshipit-source-id: 5f7d48b79f1a02e5e5a09fe00316ec350cfc340e