When you echo something to new_id the kernelmodule/driver that
owns/manages that "file" handles doing what echoing something to that
"file" is supposed to do.
The defined rule for new_id is it appends the new data to the current
list of pci_ids/usb_ids devices that the driver supports.
Nothing in /sys /proc is a real file and all of these "files" do not
always act exactly like a real file.
Hi Roger, the reason why I queried this was I always thought that "echo
'A' > /run/fred" would write "A" to /run/fred by overwriting /run/fred,
and, to get it to append you needed to use ">>" instead of ">", hence I
was surprised when I looked at the contents of the specified field and
found the data seemed to be being appended.
regards,
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