4,938 reputation
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location Germany
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visits member for 4 years, 3 months
seen 15 hours ago

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
6
revised How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
added 97 characters in body
Jul
6
revised How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
added 74 characters in body
Jul
6
comment Thumbnail generation with imagemagick doesn't render the correct colors
'...possible to call the 2 commands together with a pipe...' -- But you didn't upvote this answer, eh? :-)
Jul
6
comment Thumbnail generation with imagemagick doesn't render the correct colors
Why do you need to post-process the JPEGs with imagemagick at all? Can't you add all the params to Ghostscript so you get the sizes you want ?
Jul
6
revised Thumbnail generation with imagemagick doesn't render the correct colors
added 79 characters in body; added 65 characters in body
Jul
3
comment Add a remote printer over ssh on OSX?
Are these two descriptions (1) 'my office' and (2) 'at work' describing (a) one and the same place or (b) two different locations? -- Is your MacAir trying to access the printer from the network describing '(1)' or the network describing '(2)' or the location describing '(3) the outside world'?
Jun
29
comment How Can I determine the page count from a postscript file (generated by Opera)?
@Joe: Two minutes for a 3 page document is extreme. It means that this document is a rather complex beast, and that it would take Ghostscript just as long to simply make that document display on screen...
Jun
29
comment How Can I determine the page count from a postscript file (generated by Opera)?
@Joe: The reason why I said the command is 'rather slow' is this: Ghostscript needs to completely interpret and render the PostScript file (without displaying it) in order to reliably extract the page number info. It's just as much work as to completely display the file on screen. The reason for this is that PostScript is a Turing-complete programming language, and to see what's happening at one spot, the interpreter needs to run sequentially all the code which is located before that spot.
Jun
29
comment How Can I determine the page count from a postscript file (generated by Opera)?
@Joe: Should your code rely on simply grep-ping for HiResBoundingBox: it will not work. This word need not be used in input files at all -- its appearance in the output stream is caused by Ghostscript interpreting all of the input and distilling this info snippet for you.
Jun
27
answered How Can I determine the page count from a postscript file (generated by Opera)?
Jun
27
answered How to convert PDF/A to normal PDF?
Jun
26
comment Print PDF file without background
That's what I suspected. That's why I asked...
Jun
26
comment Get current folder name by a DOS command?
@djangofan: So you say 'Wow, interestingly enough you are right...' to something you did know already?! To an answer that didn't contribute to your knowledge? (You know, '+1' is clicking on the ^-arrow -- it's different from making an answer the accepted one....)
Jun
25
comment Print PDF file without background
@Bruce: did this solution really work for your file(s)?
Jun
25
comment Print PDF file without background
Are you really sure that what occurs as 'background' to your eyes isn't really a black box that is painted onto the page first (and hence not 'background' but common page content), before all the other strokes and fills are done?
Jun
24
awarded  Yearling
Jun
23
revised Where are ghostscript options / switches documented?
added 348 characters in body
Jun
23
revised Where are ghostscript options / switches documented?
added 216 characters in body
Jun
23
revised Where are ghostscript options / switches documented?
edited tags
Jun
23
answered Where are ghostscript options / switches documented?