How about getting rid of the backspaces before you print the script files?
O'Reilly's Unix Power Tools, second edition, section 51.06 "Cleaning
script files"
Search Google for "script.tidy" and you will find it.
Phillip Griffith (803) 952-8776
Information Technology Department
Westinghouse Savannah River Company
Lisa Weihl <[EMAIL PROTECTED]>
Sent by: [EMAIL PROTECTED]
11/27/2001 08:21 PM
Please respond to lprng
To: [EMAIL PROTECTED]
cc:
Subject: LPRng: mostly ascii file getting typed as data
I have a unique situation in which professors are dealing with files that
students create via a shell script called photo. The photo script
basically runs the Unix script command and saves the output to a
file. Usually the things they do while running the photo script are to
cat
out their programs, issue some commands and execute their programs. If
they make mistakes while typing and backspace those characters end up as
non-printable in the photo log file. These files reside on another Unix
system outside my dept. and when they are printed (currently from DEC
Unix)
they are simply handed over to my lpd. I'm using LPRng 3.7.4 and ifhp
3.4.4 The problem is that even though the majority of the file is ascii
text the GNU file command in my ifhp filter is declaring these files as
type data because of those non-printable characters. The file type data
is
not defined and so ifhp quits without printing. As a quick fix I tried
just to tell ifhp to run it through a2ps anyway even if the type was data.
In that case a2ps is complaining that the file is binary and won't convert
it. The strange thing (or maybe not strange to those of you who
understand
this better than I) is that running a2ps -Pmyprinter
--non-printable-format=space thenastyfile on the original system lets the
file come through just fine.
Below for reference here's the relevant section of my ifhp.conf
file. Nothing fancy. Anyone have any ideas of anything I can do to
handle
this situation? To be honest I got LPRng + ifhp up and running and
haven't
worked with it much since then. TIA for any help.
# set forceconversion to force the file(1) utility to be used
default_language=text
forceconversion@
## UNIX File utility path
file_util_path= /usr/local/bin/file -
## Patterns and Converters
# example conversion program
file_output_match = [
*postscript* ps \%s{ps_converter}
*pcl* pcl \%s{pcl_converter}
*pjl* pjl \%s{pjl_converter}
*pdf* ps \%s{pdf_converter}
*jpeg* ps \%s{a2ps_converter}
*gif* ps \%s{a2ps_converter}
*printer*job*language* pjl
# *text* pcl \%s{text_converter}
*text* ps \%s{a2ps_converter}
*data* ps \%s{a2ps_converter}
*gzip_compressed* filter \%s{gzip_decompress}
]
# gs_device=epsonc
# gs_options=-r240x72
# gs_converter= /usr/local/bin/gs -dSAFER -dBATCH -q -sOutputfile=-
-sDEVICE=\%
s{device}
# \%s{gs_options} -
#
#
gs_converter= /usr/local/bin/gs -q -dSAFER -dBATCH -sOutputFile=-
-sPAPERSIZE=\
%L{papersize} -sDEVICE=\%s{gs_device} \%s{gs_options} -
gs_unidriver= /usr/local/bin/gs -q -dSAFER -dBATCH -sOutputFile=-
-sPAPERSIZE=\
%L{papersize} @\%s{gs_device} \%s{gs_options} -
#a2ps_options= -q -B -1 -M \%M{papersize} --borders=no -o-
a2ps_options= -q --non-printable-format=space '--header=Printed by:
\%s{n}' '--
stdin=\%s{N}' --font-size=9 --columns=1 --portrait -M \%M{papersize}
--borders=
yes -o-
a2ps_converter= /usr/local/bin/a2ps \%s{a2ps_options}
gzip_decompress = /usr/local/bin/gzip -c -d
pdf_converter = /usr/local/libexec/filters/acroread-wrapper.sh
**********************************************************************************
Lisa Weihl, System Administrator E-mail:
[EMAIL PROTECTED]
Department of Computer Science Office: Hayes 225
Bowling Green State University Phone: (419)
372-0116
Bowling Green, Ohio 43403-0214 Fax: (419) 372-8061
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