flush all pending disk output
If fileId is not specified, or if it is and this system does
not support the fsync system call, this issues a sync system
call to flush all pending disk output. If fileId is specified
and the system does support the fsync system call, it issues an
fsync on the file corresponding to the specified Tcl fileId
to force all pending output to that file out to the disk.
If fileId is specified, the file must be writable.
A flush is issued against the fileId before the sync.
The infox have_fsync command can be used to determine if
sync fileId will do a sync or an fsync.
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003