tunelp
Configure parallel port device parameters
TLDR
Check status of parallel port
$ tunelp -s [/dev/lp0]
Reset parallel port$ tunelp -r [/dev/lp0]
Set IRQ for device$ tunelp -i 5 [/dev/lp0]
Set retry attempts and timing$ tunelp -c [times] -t [time_in_centiseconds] [/dev/lp0]
Toggle abort on error$ tunelp -a [on|off]
SYNOPSIS
tunelp [OPTIONS] DEVICE
DESCRIPTION
tunelp sets various parameters for parallel port devices. It is used for troubleshooting printer connections or optimizing performance of parallel port printers and other devices.
Part of the util-linux package, tunelp allows adjusting IRQ settings, timeout values, and error handling behavior for legacy parallel port hardware.
PARAMETERS
-s, --status
Check device status-r, --reset
Reset the parallel port-i, --irq N
Set interrupt line (IRQ)-c, --chars N
Number of times to try output before sleeping-t, --time N
Sleep time in centiseconds-a, --abort on|off
Enable or disable abort on error
CAVEATS
Parallel ports are largely obsolete. Requires root privileges. Incorrect IRQ settings can cause system conflicts. Only affects legacy lp devices.
HISTORY
tunelp is part of the util-linux package, providing configuration for parallel port devices that were common in earlier computing eras.
SEE ALSO
lp(4)