File I/O commands (TCLX)
These commands extend the stdio-style file I/O
capabilities present in Tcl and above.
These extensions include searching ASCII-sorted data files,
copying files, duplicating file descriptors,
control of file access options, retrieving open
file status, and creating pipes with the pipe system call.
An interface to the select system call is available on
UNIX systems that support it.
See the manual pages for the following commands: