General :: Convert A PDF To Greyscale On The Command Line In FLOSS?
Feb 4, 2010
I have a colour PDF file, and I'm going to print it out and then photocopy it in black and white. I'd like to know what it's like in B&W before photocopying it. Is it possible to 'greyscale' a PDF on the command line using free software? I'm using Ubuntu 9.10.
I'm having trouble finding information on using gstreamer to convert videos from the command line. I've seen examples to convert audio and know it's possible to convert video (Thoggen does this with gstreamer) but what would the command be to execute this? I assume it will use gst-launch but there are so many following switches that it gets confusing. I'm interested in converting a DVD to OGG (as Thoggen does). I ask this because Thoggen:
1) Doesn't remember my preferences (quality, picture size etc.) 2) Gives me a huge preview window that I do not need (while it is encoding)
I am making a text search engine. I need to first convert binary documents to text. I want to go with cross-platform (we develop both on windows and linux) command line (so that I can get the output via python subprocess). What are the choices for this?
I need to be able to convert HTML email messages saved as text files (.eml or .msg) to PDF documents, one PDF per email, retaining formatting and images.
Are there any Linux tools that will allow me to do this from the command line (so it can be scripted)?
I've spent a lot of time googling on this one, but could not really find anything that would convert HTML to images. Does anyone know if there are some command line tools that can do this? I need to convert simple HTML documents to images to be attached to Powerpoint presentations. Could firefox gecko be tapped into to do this without a GUI?
1) capturing an RDF formatted RSS feed as a file on my computer
2) converting the result to HTML using local command line tools
I've sorted 1) with wget? I've discovered xsltproc but I'm going round in circles. The master plan is to import my pinboard bookmarks into a static web site produced on my linux box using a handful of clever bash scripts.
i've gotten my fedora 12 to the point where i can run python3 scripts from command line and can call up python 2.6.2 idle with the command 'idle' from command line. what command will call up python3 (3.1.2 to be exact) idle?
I know my way around MS Windows much better, but I just don't feel right trying to program something for Android on a Microsoft operating system. I am interested in Android programming so I followed the instructions on [URL] to install the environment on my computer...
I just installed the JDK, SDK, Eclipse successfully (or I assume):
* When I get to Step 4 where I'm supposed to run 'android' it will not run. I get the error message "android: command not found" (I am definitely in the right directory).
** When I double-click it in nautilus, it opens up in gedit. I can set the permissions in nautilus (through the properties - Allow executing file as a program) and get it to work,
I have a Canon IP2600 printer and have the drivers from:*Post by almikul*And it works but when i go to print something i don't have the option to print in black only. I tried messing with the settings but i can't find anything.I'm printing from Firefox btw and i'm using 9.10 32 bit.
Just want to know what OS is, Fedora/RH/... Tried the following on a redhat machine: uname -o : GNU/Linux less /proc/version: Linux version 2.6.18-164.el5 (mockbuild@x86-002.build.bos.redhat.com) (gcc version 4.1.2 20080704) (Red Hat 4.1.2-46)) #1 SMP Tue Aug 18 15:51:54 EDT 2009 What is the right command to do it?
I can click the "movie player" from the GUI of Ubuntu, but how could I know the corresponding command line cmd. I want to run the movie player from commmand line. And this is not only about the background command for the movie player, I want to know all the actual command that was run by the x-window shell when I click on one of the icon on the menu.
$ ls one.tar.gz one.tar.gz $ tar -xvfz one.tar.gz tar: z: Cannot open: No such file or directory tar: Error is not recoverable: exiting now $ tar -xvzf one.tar.gz one $ tar -xzvf one.tar.gz one $ tar -zxvf one.tar.gz one $
I installed an older version of gdm and created a new XR1196 directory in /usr/bin and now my computer only boots into command line...
I can get to the GUI using startx, but in doing so I lose all audio output, and the option to shutdown or reboot from both CairoDock and the default panel...
I was trying to learn more about xorg configuration and came through an exercise that should be run at run level 3. So, I wrote init 3 in the command line then the x server stopped and the system was trying to enter run level 3 but then it hangs and nothing happens. At that time I was connected to the system via putty and wrote the command init 5 and the x server started again normally. I tried init 3 again and had the same thing.
Is there a single key strike through which i can do it ? like going to the word "to" and striking that key will put rest of the words in new line. ( i want to do it in normal mode , not in the usual insert mode where it obviously can be done by typing <Enter> )
I typed in sudo apt-get install ubuntu-desktop and it tells me it's already installed. Good. So it should work. I type sudo/etc/init.d/gdm start and the screen goes blank for 8 seconds three times in a row and then back to the command line. I have also tried gdm start without the path before and it says GDM already running. Aborting! I have 8.10 and it's a valid disk (no errors).
i'm using ubuntu with the GUIi have a .pps (power point presentation) on the desktop. I installed the powerpoint viewer and made it the default program for opening the file.when i double click on the file everything works.my problem is i need this on a schedule so i downloaded scheduled task.in scheduled task they ask me the command line i want to execute and that's where it doesn't work. I checked the "allow executing file as program" box on the file but i get the error cannot execute binary file.