seek(n)                      Tcl ( )                      seek(n)



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     NAME
          seek - Change the access position for an open file

     SYNOPSIS
          seek fileId offset ?origin?
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     DESCRIPTION
          Change the current access position for fileId.  FileId  must
          have  been the return value from a previous call to open, or
          it may be stdin, stdout, or stderr to refer to  one  of  the
          standard  I/O  channels.   The  offset  and origin arguments
          specify the position at which the next read  or  write  will
          occur  for  fileId.  Offset must be an integer (which may be
          negative) and origin must be one of the following:

          start
               The new access position will be offset bytes  from  the
               start of the file.

          current
               The new access position will be offset bytes  from  the
               current  access  position;  a negative offset moves the
               access position backwards in the file.

          end  The new access position will be offset bytes  from  the
               end  of  the file.  A negative offset places the access
               position before the end-of-file, and a positive  offset
               places the access position after the end-of-file.

          The origin argument defaults to start.  This command returns
          an empty string.


     KEYWORDS
          access position, file, seek
















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