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command-help-walletgen.md

  MMGEN-WALLETGEN: Generate an MMGen wallet from a random seed
  USAGE:           mmgen-walletgen [opts]
  OPTIONS:
  -h, --help            Print this help message
      --longhelp        Print help message for long options (common options)
  -d, --outdir       d  Output files to directory 'd' instead of working dir
  -e, --echo-passphrase Echo passphrases and other user input to screen
  -o, --out-fmt      f  Output to wallet format 'f' (see FMT CODES below)
  -J, --hidden-incog-output-params f,o  Write hidden incognito data to file
                        'f' at offset 'o' (comma-separated). File 'f' will be
                        created if necessary and filled with random data.
  -l, --seed-len     l  Specify wallet seed length of 'l' bits.  This option
                        is required only for brainwallet and incognito inputs
                        with non-standard (< 256-bit) seed lengths.
  -L, --label        l  Specify a label 'l' for output wallet
  -p, --hash-preset  p  Use the scrypt hash parameters defined by preset 'p'
                        for password hashing (default: '3')
  -z, --show-hash-presets Show information on available hash presets
  -P, --passwd-file  f  Get wallet passphrase from file 'f'
  -q, --quiet           Produce quieter output; suppress some warnings
  -r, --usr-randchars n Get 'n' characters of additional randomness from user
                        (min=10, max=80, default=30)
  -S, --stdout          Write wallet data to stdout instead of file
  -v, --verbose         Produce more verbose output


  PASSPHRASE NOTE:

  For passphrases all combinations of whitespace are equal, and leading and
  trailing space are ignored.  This permits reading passphrase or brainwallet
  data from a multi-line file with free spacing and indentation.

  BRAINWALLET NOTE:

  To thwart dictionary attacks, it’s recommended to use a strong hash preset
  with brainwallets.  For a brainwallet passphrase to generate the correct
  seed, the same seed length and hash preset parameters must always be used.

  FMT CODES:

    Format             FileExt   Valid codes
    ------             -------   -----------
    BIP39Mnemonic      .bip39    bip39
    Brainwallet        .mmbrain  mmbrain,brainwallet,brain,bw
    DieRollWallet      .b6d      b6d,die,dieroll
    IncogWallet        .mmincog  mmincog,incog,icg,i
    IncogWalletHex     .mmincox  mmincox,incox,incog_hex,ix,xi
    IncogWalletHidden  None      incog_hidden,hincog,ih,hi
    MMGenHexSeedFile   .mmhex    seedhex,hexseed,mmhex
    MMGenMnemonic      .mmwords  mmwords,words,mnemonic,mn,m
    MMGenSeedFile      .mmseed   mmseed,seed,s
    MMGenWallet        .mmdat    wallet,w
    PlainHexSeedFile   .hex      hex,rawhex,plainhex

  MMGEN v15.0.0                  September 2024             MMGEN-WALLETGEN(1)