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VENTI(1)							      VENTI(1)

       read, write, copy - simple Venti clients

       venti/read [ -h host ] [ -t type ] score
       venti/write [ -z ] [ -h host ] [ -t type ]
       venti/copy [ -fir ] [ -t type ] srchost dsthost score [ type ]

       Venti  is  a  SHA1-addressed  block storage server.  See venti(6) for a
       full introduction.

       Read reads a block with the given  score	 and  numeric  type  from  the
       server  host and prints the block to standard output.  If the -h option
       is omitted, read consults the environment variable $venti for the  name
       of  the	Venti server.  If the -t option is omitted, read will try each
       type, one at a time, until it finds one that works.  It prints the cor‐
       responding  read	 -t  command to standard error to indicate the type of
       the block.

       Write writes at most 56 kilobytes of data from standard	input  to  the
       server  host and prints the resulting score to standard output.	If the
       -t option is omitted, write uses type 0, denoting a data block.	If the
       -z option is given, write zero truncates the block before writing it to
       the server.

       Copy expects score to be the score of a VtRoot block.   It  copies  the
       entire  tree  of	 blocks	 reachable from the root block from the server
       srchost to the server dsthost.

       The -f option causes copy to run in `fast' mode,	 assuming  that	 if  a
       block  already exists on the destination Venti server, all its children
       also exist and need not be checked.

       The -i and -r options control copy's reaction to	 errors	 reading  from
       srchost.	  Copy	always prints information to standard error about each
       read error.  By default, copy exits after printing the first error.  If
       the  -i	option	is  given, read errors are ignored.  This is dangerous
       behavior because it breaks the assumption made by `fast' mode.  If  the
       -r  option  is  given, copy replaces pointers to unreadable blocks with
       pointers to the zero block.  It writes the new root score  to  standard


       vac(1), venti(2), vacfs(4), venti(6), venti(8), venti-backup(8), venti-

       There should be programs to read and write venti files and directories.

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