tell(n) Tcl Built-In Commands tell(n)______________________________________________________________________________NAMEtell - Return current access position for an open channel
SYNOPSIStell 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 seek │
in order to set the channel to a particular position. Note that this │
value is in terms of bytes, not characters like read. The value
returned is -1 for channels that do not support seeking.
KEYWORDS
access position, channel, seeking
Tcl 8.1 tell(n)