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     ZEROS(1)                                                 ZEROS(1)

     NAME
          zeros - write sequence of bytes

     SYNOPSIS
          zeros [ -r ] [ -vvalue ] [ [ blocksize... [ numblocks ] ]

     DESCRIPTION
          Zeros writes a sequence of bytes to standard output. The
          arguments specify the nature of the bytes, block size in
          bytes, and the number of blocks to output.  The -r option
          requests that each block be the same, but randomly gener-
          ated. The -vvalue option sets the value of each byte
          (default 0).  Typically zeros has a specialised use: ensur-
          ing a file has the desired number of blocks in it to hold a
          file system image, before reaming it.

     EXAMPLE
          To create and initialize a file system containing 2880 1024
          byte blocks

               zeros 1024 2880 > kfs
               echo 'ream fs kfs' > '#Kcons/kfsctl'
               echo halt > '#Kcons/kfscons'

     SOURCE
          /appl/cmd/zeros.b

     SEE ALSO
          kfs(3)

     Page 1                       Plan 9            (printed 10/30/25)