tell(n) Tcl Built-In Commands tell(n)

NAME
       tell - Return current access position for an open channel

SYNOPSIS
       tteellll channelId



DESCRIPTION
       Returns  an  integer string giving the current access position in chan- |
       nelId.  This value returned is a byte offset that can be passed to sseeeekk |
       in  order  to set the channel to a particular position.  Note that this |
       value is in terms of  bytes,  not  characters  like  rreeaadd.   The  value
       returned is -1 for channels that do not support seeking.

       ChannelId must be an identifier for an open channel such as a Tcl stan- |
       dard channel (ssttddiinn, ssttddoouutt, or ssttddeerrrr), the return value from an invo- |
       cation  of  ooppeenn or ssoocckkeett, or the result of a channel creation command |
       provided by a Tcl extension.


SEE ALSO
       file(n), open(n), close(n), gets(n), seek(n), TclStandardChannels(3)


KKEEYYWWOORRDDSS
       access position, channel, seeking



Tcl                                   8.1                              tell(n)