la75of(8)la75of(8)Namela75of - LA75 dot matrix printer filter
/usr/lib/lpdfilters/la75of [-c] [-nlogin] [-hhost] [-wwidth] [-lnum]
[-iindent] [accounting file]
The filters text data destined for LA75 compact dot matrix printers. It
handles the device dependencies of the printer and performs accounting
functions. As each job completes, the filter writes the accounting
records to the file specified by the af field in The can handle plain
ASCII files as well as files that have been preprocessed by nroff. The
filter correctly handles nroff control sequences for underlining,
superscripting and subscripting.
You can specify the filter in both the of and the if fields of the
file. For further information, see When you specify both fields, the
of filter prints the banner page only; when of stops, the if filter
gains access to the printer and maintains accounting information.
If you specify the of field only, the filter prints the banner page
then stops and restarts to maintain accounting information.
If you specify the if field only, the banner page is sent directly to
the printer. This is not a problem for most impact printers.
For a more detailed discussion on filters see the article, ``Line
Printer Spooler Manual'' in the ULTRIX Supplementary Documents, Volume
The arguments passed to the filter depend on its use. The of filter is
called with the following arguments:
The width and length values come from the pw and pl fields in
the database. The if (or restarted of) filter is passed the fol‐
la75of-c -nlogin -hhost -wwidth -lnum -iindent accounting file
The -c flag is optional and is supplied only when control char‐
acters are to be printed. That is, when the -l option of is used
to print the file. The -w and -l arguments are the same as for
the of filter but might have different values if the -w and/or
-z options of were used to print the file. The -n and -h argu‐
ments specify the login name and host name of the job owner.
These arguments are used to record accounting information. The
-i option specifies the amount of indentation to be used. The
last argument is the name of the accounting file specified from
the af field in the database.
The lf field (default /dev/null) in the database specifies the error
logging file name.
Printer capabilities database
lpr(1), pr(1), printcap(5), lpd(8), MAKEDEV(8), pac(8)
``Line Printer Spooler Manual,'' ULTRIX Supplementary Documents,
Volume 2: Programmer