### Install mkcert on Windows

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Instructions for installing mkcert on Windows using either Chocolatey or Scoop package managers, or building from source (requires Go 1.10+).

```Shell
choco install mkcert
```

```Shell
scoop bucket add extras
scoop install mkcert
```

--------------------------------

### Install mkcert on Linux

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Various methods to install mkcert on Linux, including using Homebrew, building from source (requires Go 1.13+), using pre-built binaries, or installing from the official Arch Linux repository.

```Shell
brew install mkcert
```

```Shell
git clone https://github.com/FiloSottile/mkcert && cd mkcert
```

```Go
go build -ldflags "-X main.Version=$(git describe --tags)"
```

```Shell
curl -JLO "https://dl.filippo.io/mkcert/latest?for=linux/amd64"
chmod +x mkcert-v*-linux-amd64
sudo cp mkcert-v*-linux-amd64 /usr/local/bin/mkcert
```

```Shell
sudo pacman -Syu mkcert
```

--------------------------------

### Example: Custom Output Paths for mkcert

Source: https://github.com/filosottile/mkcert/blob/master/README.md

An example demonstrating how to use the `-key-file` and `-cert-file` flags to specify custom output paths for the generated certificate and key files when creating a new certificate.

```Shell
mkcert -key-file key.pem -cert-file cert.pem example.com *.example.com
```

--------------------------------

### Install mkcert on macOS

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Instructions for installing mkcert and NSS (for Firefox support) on macOS using either Homebrew or MacPorts package managers.

```Shell
brew install mkcert
brew install nss
```

```Shell
sudo port selfupdate
sudo port install mkcert
sudo port install nss
```

--------------------------------

### Install certutil on Linux

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Commands to install the `certutil` dependency, which is part of `nss-tools` or `libnss3-tools`, on various Linux distributions (Debian/Ubuntu, RHEL/CentOS, Arch, OpenSUSE) before installing mkcert.

```Shell
sudo apt install libnss3-tools
```

```Shell
sudo yum install nss-tools
```

```Shell
sudo pacman -S nss
```

```Shell
sudo zypper install mozilla-nss-tools
```

--------------------------------

### Install mkcert CA and Generate Certificates

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Demonstrates how to install the local Certificate Authority (CA) for mkcert into the system trust store and generate a new locally-trusted SSL certificate for multiple domains and IP addresses, including wildcards and localhost.

```Shell
mkcert -install
mkcert example.com "*.example.com" example.test localhost 127.0.0.1 ::1
```

--------------------------------

### Install mkcert Root CA on Another Machine

Source: https://github.com/filosottile/mkcert/blob/master/README.md

This process outlines how to install an existing mkcert root CA certificate on a different machine without transferring the private key. It involves locating the CA file, copying it, setting the `$CAROOT` environment variable, and running `mkcert -install`.

```Shell
mkcert -CAROOT
# copy rootCA.pem to a different machine
export CAROOT="/path/to/copied/rootCA.pem/directory"
mkcert -install
```

--------------------------------

### Generate S/MIME Certificate with mkcert

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Example of generating an S/MIME certificate by providing an email address as one of the names to mkcert. mkcert automatically detects and generates an S/MIME certificate in this case.

```Shell
mkcert filippo@example.com
```

--------------------------------

### mkcert Advanced Command-Line Options

Source: https://github.com/filosottile/mkcert/blob/master/README.md

Details on advanced command-line flags for mkcert, allowing customization of output paths, generation of client authentication certificates, use of ECDSA keys, creation of PKCS #12 files, and certificate generation based on a supplied CSR.

```APIDOC
-cert-file FILE, -key-file FILE, -p12-file FILE
    Customize the output paths.

-client
    Generate a certificate for client authentication.

-ecdsa
    Generate a certificate with an ECDSA key.

-pkcs12
    Generate a ".p12" PKCS #12 file, also know as a ".pfx" file,
    containing certificate and key for legacy applications.

-csr CSR
    Generate a certificate based on the supplied CSR. Conflicts with
    all other flags and arguments except -install and -cert-file.
```

--------------------------------

### Configure Node.js to Trust mkcert Root CA

Source: https://github.com/filosottile/mkcert/blob/master/README.md

This snippet shows how to configure Node.js to trust certificates issued by mkcert by setting the `NODE_EXTRA_CA_CERTS` environment variable. Node.js does not automatically use the system root store, requiring this explicit configuration.

```Shell
export NODE_EXTRA_CA_CERTS="$(mkcert -CAROOT)/rootCA.pem"
```

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