> For the complete documentation index, see [llms.txt](https://linux-tutorial-cli.gitbook.io/linux-cli-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://linux-tutorial-cli.gitbook.io/linux-cli-tutorial/txt-files/cmp.md).

# cmp

## cmp

The `cmp` command in Linux is used to compare two files or directories. It is a simple command that can be used to quickly check if two files are identical.

The `cmp` command is used in the following syntax:

```
cmp [options] [file1] [file2]
```

The `options` can be used to specify the following:

* `-l` : Compare files line by line.
* `-s` : Silent mode.
* `-n` : Compare only the first `n` characters.

For example, to compare the files `my_file1.txt` and `my_file2.txt` line by line, you would run the following command:

```
cmp -l my_file1.txt my_file2.txt
```

This command will compare the files `my_file1.txt` and `my_file2.txt` line by line. If the files are identical, the command will not output anything. If the files are different, the command will output the line number where the difference occurs.

To compare the files `my_file1.txt` and `my_file2.txt` silently, you would run the following command:

```
cmp -s my_file1.txt my_file2.txt
```

This command will compare the files `my_file1.txt` and `my_file2.txt` silently. If the files are identical, the command will not output anything. If the files are different, the command will not output anything.

To compare the first 10 characters of the files `my_file1.txt` and `my_file2.txt`, you would run the following command:

```
cmp -n 10 my_file1.txt my_file2.txt
```

This command will compare the first 10 characters of the files `my_file1.txt` and `my_file2.txt`. If the files are identical, the command will not output anything. If the files are different, the command will output the first 10 characters of the files where the difference occurs.

The `cmp` command is a simple command that can be used to quickly check if two files are identical. It is a versatile command that can be used to compare files in a variety of ways.

Here are some additional things to note about the `cmp` command:

* The `cmp` command is part of the coreutils package.
* The `cmp` command can be used on any system that uses the Linux kernel.
* The `cmp` command can be used to compare any two files that are supported by the Linux kernel.
* The `cmp` command is a safe tool to use. It will not damage any files.

## help

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