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I happen to know a thing or two about printing, PDF, PostScript, PJL, Fonts and related stuff.

Also familiar with some bits and pieces of Linux, Unix, Samba and Solaris printing. Not to forget bash programming and Windows cmd.exe batch scripting. I also do consultancy in these topics.

If you want, I share some of this knowledge here and on Stackoverflow (SO). Just click to browse for all.

Stackoverflow.com:

Superuser.com:

Serverfault.com:


Jul
1
comment ubuntu 9.10 cups server cupsd.conf
That's not correct. What you indeed do have to avoid is multiple Listen ... statements with overlapping sockets. What is completely "legal" with CUPS is having 2 (or more) separate Listen ... statements, one with Listen 127.0.0.1:631, another one with Listen 192.168.1.101:631. These do not overlap. What will always overlap is to use wildcard statements, such as Listen *:631 and also add specific ones such as Listen 192.168.1.101:631.
Jul
1
answered ubuntu 9.10 cups server cupsd.conf
Jul
1
revised Is there a freeware program for editing the text stream of PDFs?
clarify some statements, since they were not unambigous enough
Jul
1
answered Is there a (free or commercial) print server which print PDFs from networks?
Jun
27
answered How to know which fonts are used in selected part of a PDF document
Jun
25
comment How do you type Unicode characters using hexadecimal codes?
you can also calculate with set /a in a command window ;-). To convert hex=4321 into decimal, just type set /a 4*16*16*16+3*16*16+2*16+1 and the result will show up as 17185
Jun
25
comment How do you type Unicode characters using hexadecimal codes?
@Arjan: you do not type hex chars with the "alt+nnn" method. You do only type decimal character codes. That's why you cannot type even straight "U+1234" strings (which do not contain any of your loathed "a-f" characters) into your numeric keypad as "alt+1234", but you need to convert hex==1234 into dec==4660 and then type "alt+4660" before you (MAY) get what you want. So your statement "using the Alt-trick does not work for hexdecimal codes" nails the problem exactly, but you missed to understand it yourself :-)
Jun
25
comment How do you type Unicode characters using hexadecimal codes?
@Will: the "alt+NN..." method expects decimal, not hex notation of the character position. Unicode uses hex. So if you want to type what Unicode represents as "U+23AF" you need to convert hex==23AF into decimal==9135, and then type "alt+9135". That's the only general method there is on offer. But: You wanted character may still not appear as expect in the text field or document, if your currently selected font does not have the "U+23AF" place filled (or if it is not a Unicode font in the first place!).
Jun
25
comment How can I type U+200B character?
@RobertPitt: if you want to use the "alt+NMO" method with numeric keypad, the "NMO" part must not be the identical string as the Unicode codepoint description. Unicode codepoints are given as hex values. The "alt+NMO" method needs decimal values. You MUST convert the Unicode "NMOP" into a decimal. Then use "alt+<decimal-of-NMOP>" on your numeric keypad. (Doesn't work for me with the examples Mehper had given, I don't have fonts. But works for all cases of "normal" characters, as well as characters which are displayed by my local charmap.exe.)
Jun
25
answered How to know which fonts are used in selected part of a PDF document
Jun
25
comment How can I type U+200B character?
Which operating system are you using?
Jun
25
comment Is there a freeware program for editing the text stream of PDFs?
(After all, there are tons of OCR'd PDF documents out there. And OCR working with 99% accuracy is already regarded as "good". (But looking from the p.o.v. of a high school teacher, any text that has 10 spelling errors for each 1000 characters is earning one of the worst school grades you can imagine....)
Jun
25
comment Is there a freeware program for editing the text stream of PDFs?
This is an interesting question. I never needed to think about it, and I don't know enough. As soon as I have some time on hand I'll do some research (like study the relevant parts of the PDF spec) in order to find out more. Could well be that these hidden OCR'd text strings are made to be not editable at all. But maybe there is a workaround...
Jun
25
revised Is there a freeware program for editing the text stream of PDFs?
added 1 characters in body
Jun
24
answered Is there a freeware program for editing the text stream of PDFs?
Jun
24
revised How do I convert a PRN file to PDF?
deleted 1 characters in body
Jun
24
answered Finding duplicate pages in pdf document
Jun
24
revised Is it faster to print PDF or PS?
deleted 3 characters in body
Jun
24
revised How do I convert a PRN file to PDF?
added 7 characters in body
Jun
24
comment How to resume CUPS printer from command line?
Aren't you accepting any of the answers you got?