01-01-2019
WOW!
Absolutely terrific, congratulations.
Well done Rav', you have earned that position.
Look forwards to more input from you.
Bazza...
This User Gave Thanks to wisecracker For This Post:
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Congrats to Ravinder Singh for his new Green Web Dev Ops badge.
Everyone starts to learn and grown in technology and Ravinder is starting to learn Web Dev and is making progress quickly.
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seek(n) Tcl Built-In Commands seek(n)
__________________________________________________________________________________________________________________________________________________
NAME
seek - Change the access position for an open channel
SYNOPSIS
seek channelId offset ?origin?
_________________________________________________________________
DESCRIPTION
Changes the current access position for channelId. ChannelId must be a channel identifier such as returned from a previous invocation of
open or socket. The offset and origin arguments specify the position at which the next read or write will occur for channelId. 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 underlying file or device.
current The new access position will be offset bytes from the current access position; a negative offset moves the access position back-
wards in the underlying file or device.
end The new access position will be offset bytes from the end of the file or device. 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.
The command flushes all buffered output for the channel before the command returns, even if the channel is in nonblocking mode. It also
discards any buffered and unread input. This command returns an empty string. An error occurs if this command is applied to channels
whose underlying file or device does not support seeking.
Note that offset values are byte offsets, not character offsets. Both seek and tell operate in terms of bytes, not characters, unlike |
read.
SEE ALSO
file(n), open(n), close(n), gets(n), tell(n)
KEYWORDS
access position, file, seek
Tcl 8.1 seek(n)