Command option Sample:cipher /X

Search command sample in the internet.It is the result.

cipher /X オプション

cipher /x [filename]
    Section 8.3. Encryption :: Chapter 8. Security :: Part II: Nutshell Reference :: Windows Vista in a nutshell :: Microsoft Products :: eTutorials.org : http://etutorials.org/Microsoft+Products/windows+vista/Part+II+Nutshell+Reference/Chapter+8.+Security/Section+8.3.+Encryption/
cipher /x .This will prompt you for a passwordtwiceand will use that to encrypt the private key information within the PFX.You can also export an EFS encryption key pair used for a particular file
    Syngress - Microsoft Vista for IT Security Professionals - PDF Free Download : http://mxdoc.com/syngress-microsoft-vista-for-it-security-professionals.html
CIPHER /x c:\myefsbackup
    cipher Encrypt or Decrypt files and folders - Windows CMD - SS64.com : http://ss64.com/nt/cipher.html
CIPHER /X and press ENTER. A new file with the name specified by you and the extension .pfx will be created in the current directory. Please note that since this is an operation related to your computer
    File Encryption Utility - A Wonderful Encryption Tool by Microsoft - Windows Code Bits : http://www.wincodebits.in/2015/11/file-encryption-utility-a-wonderful-encryption-tool-by-microsoft.html@2e3055&2e3055
Cipher /x can backup your keys
    Bill Cipher`s Death Дубляж (Rus) - YouTube : http://www.youtube.com/watch@v=3KOPo4j01yw
CIPHER /x c:\myefsbackup
    DOS - Microsoft DOS and Windows Command Line - CIPHER : http://www.zoltis.com/component/seoglossary/2-dos-microsoft-dos-and-windows-command-line/encrypt-or-decrypt-files-folders

cipher のオプション一覧