Re: seeking new laser printer [solved, mostly]
On Mon, Dec 30, 2024 at 18:15:31 +0000, I wrote:
>> 1. Formerly (but still Bookworm), I had an HP LaserJet 5MP connected with
>> a USB-to-parallel adapter. I saw this character special device:
>>
>> crw-rw---- 1 root lp 180, 1 Dec 3 08:53 /dev/usb/lp1
>>
>> I would typically print with something like "cat file > /dev/usb/lp1".
>> Now, though, with the new laser and a straight USB connection (no
>> wireless), I see these in /dev/usb:
>>
>> crw------- 1 root root 180, 0 Dec 3 08:53 /dev/usb/hiddev0
>> -rw-r--r-- 1 root root 9796 Dec 21 13:01 /dev/usb/lp1
On Monday, December 30, 2024 3:56 PM, Greg Wooledge replied:
> I can't address your other questions, but this one is pretty clear.
> That /dev/usb/lp1 is just an ordinary file. Whatever content you're
> redirecting to that location is just going to disk. Or virtual disk
> in memory, if your /dev is a memory-based virtual file system. It's
> no longer a character special device at all, and it has no connection
> to your printer.
Yes, this is embarrassing. I created that lp1 by using cat to send a file there in the way that caused printing with the character special lp1. So what's there now is just a copy of the PostScript I copied there. Thanks.
________________________________________
From: Greg Wooledge <greg@wooledge.org>
Sent: Monday, December 30, 2024 3:56 PM
To: debian-user@lists.debian.org
Subject: Re: seeking new laser printer [solved, mostly]
External Email: Use Caution
On Mon, Dec 30, 2024 at 18:15:31 +0000, Kleene, Steven (kleenesj) wrote:
> 1. Formerly (but still Bookworm), I had an HP LaserJet 5MP connected with a USB-to-parallel adapter. I saw this character special device:
>
> crw-rw---- 1 root lp 180, 1 Dec 3 08:53 /dev/usb/lp1
>
> I would typically print with something like "cat file > /dev/usb/lp1". Now, though, with the new laser and a straight USB connection (no wireless), I see these in /dev/usb:
>
> crw------- 1 root root 180, 0 Dec 3 08:53 /dev/usb/hiddev0
> -rw-r--r-- 1 root root 9796 Dec 21 13:01 /dev/usb/lp1
I can't address your other questions, but this one is pretty clear.
That /dev/usb/lp1 is just an ordinary file. Whatever content you're
redirecting to that location is just going to disk. Or virtual disk
in memory, if your /dev is a memory-based virtual file system. It's
no longer a character special device at all, and it has no connection
to your printer.
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