# Install rsc_2fa

Two-factor authentication on the command-line. Version 1.2.0 via Homebrew; verified from local package data.

## Install

```sh
sudo av install brew:rsc_2fa
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install rsc_2fa
```

  Evidence: local Homebrew formula metadata

## Package Facts

- **Package key:** brew:rsc_2fa
- **Package manager:** Homebrew
- **Package manager URL:** <https://formulae.brew.sh/formula/rsc_2fa>
- **Version:** 1.2.0
- **Source summary:** Two-factor authentication on the command-line
- **Homepage:** <https://pkg.go.dev/rsc.io/2fa>
- **Repository:** <https://github.com/rsc/2fa>
- **Upstream docs:** <https://github.com/rsc/2fa#readme>
- **License:** BSD-3-Clause
- **Source archive:** <https://github.com/rsc/2fa/archive/refs/tags/v1.2.0.tar.gz>
- **Generated:** 2026-06-10T07:18:26+00:00

## Executables

- 2fa (cli)
- 2fa (alias)

## Build Dependencies

- go

## Install Behavior

- Post-install hook: not defined
- Bottle: available on arm64_big_sur, arm64_linux, arm64_monterey, arm64_sequoia, arm64_sonoma, arm64_tahoe, arm64_ventura, big_sur, catalina, monterey, sonoma, ventura

## Freshness

- Page generated: 2026-06-10
- Package-manager version: 1.2.0
- Local data status: ok
- Upstream repository: https://github.com/rsc/2fa
- Upstream latest detected: v1.2.0 (current)
- info: No package-manager update timestamp was available.

## 安全说明

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals

## Source Database Details

- **Source Database:** Homebrew formula API
- **Tap:** homebrew/core
- **Full Name:** rsc_2fa
- **Version Scheme:** 0
- **Revision:** 0
- **Bottle Stable Root URL:** <https://ghcr.io/v2/homebrew/core>
- **Deprecated:** no
- **Disabled:** no
- **Keg Only:** no
- **URL Keys:** stable


## Related Links

- [Terminal utility packages](https://www.automicvault.com/zh-hans/pkg/terminal-utilities/) - Matched terminal and command-line workflow metadata.
- [Language runtime packages](https://www.automicvault.com/zh-hans/pkg/language-runtime-packages/) - Matched language runtime, compiler, or interpreter metadata.
- [Networking and protocol packages](https://www.automicvault.com/zh-hans/pkg/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata.
- [Security and crypto packages](https://www.automicvault.com/zh-hans/pkg/security-crypto-tools/) - Matched security, identity, cryptography, password, signing, or certificate metadata.
- [go](https://www.automicvault.com/zh-hans/pkg/brew/go/) - Build dependency declared by Homebrew.
- [steamguard-cli](https://www.automicvault.com/zh-hans/pkg/brew/steamguard-cli/) - Shares av.db curated category or tags: authentication, cli, security, totp, two-factor.
- [google-authenticator-libpam](https://www.automicvault.com/zh-hans/pkg/brew/google-authenticator-libpam/) - Shares av.db curated category or tags: authentication, cli, security, totp, two-factor-authentication.
- [oath-toolkit](https://www.automicvault.com/zh-hans/pkg/brew/oath-toolkit/) - Shares av.db curated category or tags: authentication, cli, security, totp.
- [totp-cli](https://www.automicvault.com/zh-hans/pkg/brew/totp-cli/) - Shares av.db curated category or tags: authentication, cli, security, totp.
- [cotp](https://www.automicvault.com/zh-hans/pkg/brew/cotp/) - Shares av.db curated category or tags: authentication, cli, security, totp, two-factor-authentication.
- [gauth](https://www.automicvault.com/zh-hans/pkg/brew/gauth/) - Shares av.db curated category or tags: authentication, cli, security, totp, two-factor-authentication.
- [krb5](https://www.automicvault.com/zh-hans/pkg/brew/krb5/) - Shares av.db curated category or tags: authentication, cli, security.
- [cyrus-sasl](https://www.automicvault.com/zh-hans/pkg/brew/cyrus-sasl/) - Shares av.db curated category or tags: authentication, cli, security.

## Sources

- Nucleus package database
- Geiger risk classifier
- package-page enrichment
- package version freshness
- av.db category and tag curation
- package relationship graph
- cross-ecosystem install command graph