fghack — an anti-backgrounding tool
fghack runs child with many extra descriptors writing to a pipe.
fghack reads and discards any data written to the pipe.
After child has exited and the pipe has been closed, fghack exits.
fghack was originally part of Daniel J. Bernstein's daemontools toolset in 2001.
Original code and documentation by Daniel J. Bernstein.
Documentation modernizations by Jonathan de Boyne Pollard.