Here are some program written by Jonathan Hudson to manipulate
QDOS file headers for UQLX, more detailed instructions are in the
programs itself or in the documentation.
Check Jonathans site for some more utilities!

xheader:
  perl script, adjust first line to `which perl`,
  copy UQLX executables and/or set dataspace

qcp.c:
  set header

qls.c:
  list files and their headers