It is necessary to remove "parport" driver and/or "lp" driver, before using the cygnal device.
在使用cygnal设备之前,必须移除“parport”驱动和/或“lp”驱动。
What this means is that all standard output from our selpg process will go to the standard input of the lp process.
这意味着所有来自selpg进程的标准输出将进入lp进程的标准输入。
An example of "other_command" could be lp, which would cause the output to be printed on the default printer for the system.
“other_command”的示例可以是lp,它使输出在系统缺省打印机上打印。
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