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Full Discussion: Carrier Detection in FreeBSD
Operating Systems BSD Carrier Detection in FreeBSD Post 302821307 by DGPickett on Friday 14th of June 2013 11:05:14 AM
Old 06-14-2013
So what is the question? FreeBSD knows what i needs to know about peripherals and no more. When it finds a serial port, it creates a support program for it. Different rs232 ports can have different sets of leads implemented. CD may be one that the driver trusts more than say DTR or CTS.
 

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libprinterconf(6)						   Games Manual 						 libprinterconf(6)

NAME
pconf_detect - A command-line utility for autodetecting printers in Linux SYNOPSIS
pconf_detect -m [PPORT|NETWORK] -i <info-string> DESCRIPTION
pconf_detect is a command-line utility for autodetecting printers from Linux. It is a simple wrapper around libprinterconf's pconf_detect_printer() function. It currently supports two methods of autodetection: parallel port detection and network detection. The detection type is specified with the -m option, which can be followed by one of two values: PPORT or NETWORK. Detection specific information is passed following the -i option. For parallel port detection, this will be a comma-separated string of parallel port numbers. For network detection, it will be some method of specifying a range of hosts or IP addresses. The most common form is "10.203.1.2/24", indicating the IP/bitmask to scan. Other formats include an IP range ("10.203.1.12-30"), an IP/netmask ("10.203.1.2/255.255.255.0"), a simple IP address ("10.203.1.2"), or a host name ("myprinter.mydomain.com"). [Note: Detection of large network subnets can take a significant amount of time.] pconf_detect will print out a set of formatted text strings, one for each detected printer. The actual format of these strings will depend on the detection method. For parallel port detection, the string will be in the basic form: "port=p;model=m". For a network printer the form is: "printer=hostaddr;vendor=v;model=m". EXAMPLES
PPORT example: pconf_detect -m PPORT -i 0,1 where "0,1" is a comma-separated list of the parallel port to scan. NETWORK example: pconf_detect -m NETWORK -i "10.203.1.2/24" where "10.203.1.2/24" is the IP/bitmask to scan. SEE ALSO
libprinterconf(3) Printerconf Docs 12 April 2000 libprinterconf(6)
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