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May
9
comment Extract and replace images form a PDF file
To extract images (but not replace them) you can use pdfimages; for replacing, I found this link How to replace images in a PDF? | RubyPDF Blog, which has Java and C# code, but I'm not sure if it uses a specific library or something....
Mar
2
comment Have Firefox prompt whether to open PDF in browser, or in external application, or for saving?
Thanks, @Ramhound - I'll give that a try; but wouldn't that open Firefox in a new instance? I'd like the PDF opened as preview in the same instance, when I choose to do so ... EDIT: just tried it, opens in new instance (even asks for a profile choice at start with --safe-mode) - this is bound to get recursive without ever opening the PDF.
Mar
2
comment Have Firefox prompt whether to open PDF in browser, or in external application, or for saving?
Thanks @Ramhound - but if Firefox built-in PDF viewer is set as default application, then I get no prompt whatsoever; the PDF just opens directly in Firefox when I click on it, without asking me anything in a prompt first? And what I want is to be prompted about it...
Feb
23
comment Video players that have frame by frame playback feature
Also the command line MLT melt can function as a player, and has "h = previous frame, l = next frame"
Jan
31
comment How to find which files and folders were deleted recently in Linux?
ravi, @SampoSarrala - is this applicable if I want to watch files in the / root, taking into account mounting/unmounting drives? I would guess, in that case the only thing viable for keeping a deletion log would be a kernel module that would hook into unlink (see stackoverflow.com/questions/8588386/…); also man inotifywait states: "--recursive: Warning: ... this option while watching ... a large tree, it may take quite a while. Also, ..., the maximum amount of inotify watches per user will be reached. The default maximum is 8192;"
Jan
30
comment How to create an uncompressed AVI from a series of 1000's of PNG images using FFMPEG
Just wanted to say thanks for that list with the file sizes; great stuff for quick reference.. Cheers!
Jan
28
comment How can I make ffmpeg be quieter/less verbose?
Just a note: on my ancient ffmpeg I get "ffmpeg: unrecognized option" for -nostats and -hide_banner; however -v 0 disables progress output (while -loglevel quiet doesn't); I also tried -vstats_file /dev/null, but that doesn't influence the stderr output.
Jan
26
comment How to convert a multi-page PDF file to PNG files, with one PNG file per page of the PDF document?
Just a note: ImageMagick's convert does use Ghostscript when rendering .pdfs, see stackoverflow.com/questions/14705727/…
Jan
26
comment ffmpeg - Create a video from image frame with a start and a cout
I appreciate this command, because it works with old ffmpeg which I have to use right now; the only thing is -t is not "end time", man ffmpeg states it is "duration"; so end time would be start+duration. Cheers!
Jan
25
comment Continuously re-execute a command when it finishes in Bash
Thanks for this, I was looking for it, especially since yourcommand; !! does not actually work with commands on the same line, however, !# seems to do. Cheers!
Jan
23
comment Command-line video editing in Linux (cut, join and preview)
Thanks, @user196805 - good to have that noted; cheers!
Jan
21
comment What format are Firefox Marketplace apps in, and where are they installed under desktop Firefox?
Related (but doesn't answer this): 14.04 - How to uninstall apps installed through Firefox Marketplace? - Ask Ubuntu
Oct
8
comment Downloading an (apache) online directory locally using cli (wget …)
Also related: unix.stackexchange.com/questions/36798/…
Aug
14
comment How to open nokia photo images with .nrw extension?
Just tried it, the site will seemingly do a conversion of NOKIARAW files, but the output is meaningless noise, unfortunately..
Jul
17
comment Move a layer to specific X,Y position in Gimp
Not exactly "move a layer", but related: there is "pastexy.py -- Paste the clipboard at location X,Y" from the post: Pasting at a specific location - comp.graphics.apps.gimp
Mar
23
comment avoid permission denied spam when using find-command
Also related: Ubuntu grep, find etc: "Permission denied" and "No such file or directory" output - Super User
Feb
23
comment Open Office Calc time to decimal
... having selected the result cell, click on the formula entry again; and now add the *24 to, say, (D7-C7) - and now you should (hopefully) get the result with decimals; after this, you could re-format the number with the proper amount of decimals, I guess. Hope this helps - cheers! (EDIT: may have forgotten to say, that at first, I didn't enter the whole formula (with *24), just the difference (D7-C7)).
Feb
23
comment Open Office Calc time to decimal
You could have also edited the original question post, and added what you typed here there, and then written a comment to the answerer.. Anyway - what I did was to format the time cells as [HH]:MM in Format cells/Format code (as per Documentation/How Tos/Calc: Date & Time functions - Apache OpenOffice Wiki); then after you enter the formula (and get the 2), right-click and "Clear Direct Formatting" - this should give you a floating point number (0.1041666667); now ...
Feb
17
comment How to tell apt that dependencies are resolved manually?
I've had a similar problem described here: Ignoring specific unmet dependencies with aptitude? - Ask Ubuntu; also, there's a nice explanation here: How can I install a package without installing its dependencies? - Ask Ubuntu
Feb
13
comment Fax from Mac OS X 10.6 via bluetooth phone?
Not exactly for Mac - but you may want to check my post in ubuntu - Sending and receiving fax via GSM Network in Linux - Super User, which documents some stuff I've found about sending fax via bluetooth phone; maybe it helps.