Copy data from one channel to another.

Synopsis

• fcopy inchan outchat ?-size size? ?-command callback?

Description

The fcopy command copies data from one I/O channel, inchan to another I/O channel, outchan. The fcopy command lever- ages the buffering in the Tcl I/O system to avoid extra copies and to avoid buffering too much data in main memory when copying large files to slow destinations like network sockets.

See the fcopy(n) man page for further information.

Keywords

blocking, channel, end of line, end of file, nonblocking, read, translation