# authenticator-cli A commandline Authenticator App (for Authy, Google Authenticator, Microsoft Authenticator, Facebook Authenticator, TOTP, etc) **Install node.js 4.0+**: ```bash curl -L https://bit.ly/iojs-min | bash ``` **Install authenticator**: ```bash npm install --global authenticator-cli ``` ``` Usage: authenticator [OPTIONS] Options: --account user@example.com Account Name, typically email address (Default is user@example.com) --algo SHA1 Algorithm, typically SHA1 (also SHA256, SHA512) (Default is SHA1) --digits 6 Number of digits, typically 6 (also 8) (Default is 6) --generate Create a cryptographically-random TOTP key formatted in base32 with spaces. (Default is true) --issuer ACME Issuer, typically the company name (Google, Facebook, Digital Ocean, etc) (Default is ACME) --key 'xxxx xxxx ...' Supply the base32 key yourself (with or without delimeters). Takes precedence over --generate --period 30 Number of seconds between tokens, typically 30 (Default is 30) --qr Print the QR Code to the Terminal. --verify '123 456' Verify a token. Must be used with --key. -h, --help Display help and usage details ```