How do I make imagemagick convert things one at a time? I know how to make imaggemagick convert all pages of a pdf into individual jpeg files by storing it all in the RAM at once but if there isn't enough RAM, this will use swap like crazy and be suuuuuuuper slow.
Here is the command for the "crazy swap-using" way:
convert --units PixelsPerInch -density 150x150 filename.pdf filename.jpg
When I run
convert *.jpg output.pdf
the output looks like this:
Why is the first page bigger then the others in the PDF? The original JPEGs were all the same size!
I'm trying to use convert, I have installed the imagemagick. I use this line:convert *.jpg test.pdf but I'm only able to convert to pdf 1 single jpg file, not multiple files at once. When there's more than one file, I get the following error: Segmentation fault
View 5 Replies View RelatedWhen I try converting a pdf in jpeg files, I get this error :
Code:
domino@domino-desktop:~$ convert Foundation.pdf Foundation.jpg
^Cconvert: Postscript delegation failed `Foundation.pdf': No such file or directory. @
[code]....
I keep trying to convert a bunch of jpg files into pdf, but ImageMagick just seems to keep failing there. Well well, after three thousand fix and reinstall attempts (seriously, I've been trying to fix it for the last month or so), this is what I'm getting today:
[Code]...
I have a large number of scanned JPG images that I would like to convert into a single PDF file -- each image will be on its own page, and I want the pages to be in a certain order.What is the command for ImageMagick to take a batch of JPGs and convert them to PDF, and order the pages in a certain way.
(by the way: I am working on writing a Gentoo ebuild for convert2pdf at the moment, but until I get that worked out, I'd like to figure out how to do this using Imagemagick, which is already in the portage tree, and already installed)
I am trying to split a PDF into component pages that are of equal quality to the original. If I use display mypdf.pdf, then the PDF is split into pages of acceptable quality. The problem here is that I have to save each page individually. If, however, I use convert mypdf.pdf mypdf.bmp, I get the individual pages of the PDF in .BMP format (which is fine, but not exactly what I want), but the quality is substantially less than the original. I've tried dozens of combinations of commands to try to increase this quality, but to no avail.
Even if I do convert mypdf.pdf mypdfagain.pdf, there is a big loss of quality. Anyone familiar with splitting a PDF into individual pages without suffering a loss in quality?
Ideally, I would just save all the "scenes/frames" from display, but that feature unfortunately does not exist (though I may endeavor myself to add it if no formal solution exists).
NOTE: I think part of my problem might be: by using identify mypdf.pdf I can see that the resolution is specified, and when I convert it the resolution is much lower. This could be a source of quality loss, but I'm not familiar enough with image conversion to say that for sure. Whatever this command does, it removes the extra layer or whatever it is that prevents OCR from succeeding. I'd really like to understand that technology.. What is it about a PDF that allows an individual to embed some meta-data into every page of the PDF so that the only thing seen, say, through OCR, or a text search function, is the embedded text?
the section where the wireless signal and sound control is?To the left of the time/date in this picture:
View 2 Replies View RelatedI was using openSUSE, then went to Mint. Before I had to tinker with all sorts of settings, and things to get wireless internet to work. Ubuntu just detected what drivers I needed & its simply got my wireless to work all on its' own.
Is 11.3 similar? I want to move back to openSUSE, but I don't want to tinker with this. I want to use my time on the computer for more productive things.
I used the following command to get the unix time of root user creation:
Code:
awk -F":" '$1 == "root" {print $3}' /etc/shadow
How can i convert this into the date/time of creation?
I am writing a shell script, which determines the OS installation date among other stuff, and i am assuming the root user's account creation date should be a pretty accurate pointer. Are there reasons why i should not be assuming so?I would be open to other suggestion for getting this date/time, but it would nevertheless be interesting to convert the unix time to "real" time without doing complex manual(or otherwise) computation..
What's the easiest way to make things autostart in KDE? The only method I know is to make links to the applications and then put them in the KDE autostart folder. Last time I did that, I had a lot of trouble with not being allowed to make the links unless I was root. Is there a simpler way?
View 1 Replies View RelatedRunning Opensuse 11.1 on an HP laptop. When I resume from hibernation or standby, I usually have to wait for about a minute for the wireless card to find my router. Is there any way to speed up this time to connect process ?
Interestingly when I boot from cold, the wireless connection is most times ready to go as soon as the boot has finished. So just wondering how I can make things quicker for resume from standby or hibernation
I'm working through some problems in a beginners programming book. The author mentions a formula for calculating the number of ways of picking out n things from a collection of m of them:
Code:
/ m m!
| | = -----------
n / n! (m-n)!
But he does not give a name for the formula. Does anyone happen to know what it is called? I need to do some related research.
My computer has different time when booting to linux or Windows.How to make the time the same?My computer time is 10:57pm Apr 14 when booting to linux.My computer time is 2:57am Apr 14 when booting to Windows Vista Home Premimum SP2.Both OS are set to the same time zone (GMT-5. Eastern Time US & Canada).
View 5 Replies View RelatedDoes anyone know how I can obtain a DVD ISO or how to convert the CD ISO to DVD to make it bootable?
View 2 Replies View RelatedI'm developing a C++ application which is run on linux. I need to calculate epoch time for a given date and vice versa. (no of seconds elapsed since 1979-01-01) I used the following two methods.I need to convert the given date to epoch time and again convert that epoch time to the corresponding date.But the following methods doesn't give me the correct answer. Method to calculate the epoch time:
Code:
time_t HistoryCache::ConvertTimeToEpoc(const char* _zTime,const char* _zFormat)
{
struct tm tmTime;
strptime(_zTime,_zFormat, &tmTime);
[code]....
My problem is this. Lets think that the value I get as epoch time for the 2010-01-05:000000 is 1262649600. (lTime value) Then I use the same value (1262649600) as a input to the GetTimeStamp method, I didnt get the dateString as 2010-01-05:000000. The date is changed by one day.
How to convert videos to mpg format so that I can make VCD using them.
I'm using Slackware 12.2
Is there any software already installed?
Or I have to install it manually?
I need to make a few folders, but I need the fold name to reflect the time which they were created. For example: if I create a folder at on 2010.06.03 at 13:01:34 then I would need a file name something similar to the following 20100603_130134. In addition, could the same method be used for .tar files? I would like a bash script which I can run to perform the following; however, I am not familiar with scripting in Linux yet.
View 2 Replies View RelatedI've noticed that every time this desktop is turned on the date & time are as they were the last time I used it, and then have to put in the correct date & time again (this is why I chose the word 'persistent' within the tittle). When I try to change those have to write in the password for the date as well as for the time as if 'login-in' once were not enough! What I want to know is how to put in the date & time and receive the correct amounts the next time I turn the unit on again, as it should be? Do I've to open a terminal & do it with administrator's authority/credentials?
View 3 Replies View RelatedI own a netbook (samsung nf210 to be exact) which has Linux Mint 10 installed. What I want to do is to make both, headphones and speakers, play the same output at the same time. I believe it is possible to make it since many people are facing such condition and treat it as a pulseaudio bug (or smth like that) And it would be perfect if it was possible to easily switch between the modified configuration (dual output) and original configuration. I've noticed there are some profiles (analog output, duplex, surround etc.). Is there any way to modify those profiles? If it was, I could modify the Analog Surround Output 4.0 profile and assign rear speakers to headphones and front speakers to internal speakers of my computer.
View 1 Replies View RelatedHow do I change the default OS on grub, and adding more time to make my choice?
View 3 Replies View RelatedI have Ubuntu 10.04.1 32bit installed on my flash drive so wherever I go I can have my own mini personal computer, but one problem I'm having is every computer it is run on the next time it's rebooted to the OS on the hard drive it has UTC time instead of the actual time for the timezone you're in that Windows uses. So is their a way I can make Ubuntu not automatically change the clock to what it wants?
View 2 Replies View RelatedHow to make the system boot faster by removing the idle time between 5s to 10s? bootchart attached. It is Ubuntu10.04LTS by the way. One more hint, the screen black out for ~4s after "Begin: Running /scripts/init-bottom... Done." I don't know what is going on during that 4s, but my best guess is there is a way we can get rid of it.
Bootchart can be found here:
I have been using the terminal command "convert" to make PDFs and I noticed that some of the pictures are out of order. The script I wrote is thus:
Quote:
#!/bin/bash
cd /home/zach/Documents/PDFing
convert *.jpg -resize 50% *.png
[code]...
During the stage where all the images are .png, they are still ordered properly in the folder. However upon converting to a PDF, some of them are in the wrong places. They are all uniformly named with numbers in the proper order, so that is not an issue.Is there a way that I can force "convert" to order strictly by name? The man pages were interesting, but did not help me in this situation.
Post Scriptum: I'm running 10.04 LTS Desktop Edition.
Recently I've bought this motherboard : [URL] ...
And this graphic card : [URL] ....
Now I have attached two monitors on the computer,the first one (the monitor that is working) is attached to the DVI port of the nvidia graphic card,the second one is attached on the VGA port of the embedded graphic card of the motherboard.
Since I would like to play a little with blender,I need to use two monitors at the same time because in this way I can follow more video tutorials at the same time.
I'm using this version of debian :
Linux ziomario-Z87-HD3 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u1 x86_64 GNU/Linux
and this is the informations concerning the graphics card installed on the computer :
root@ziomario-Z87-HD3:/home/ziomario# lspci -nn | grep VGA 00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell Integrated Graphics Controller [8086:0412] (rev 06) 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation Device [10de:11c0] (rev a1)
root@ziomario-Z87-HD3:/home/ziomario# xrandr
Screen 0: minimum 8 x 8, current 1920 x 1080, maximum 16384 x 16384
[Code] ....
How to use my two monitors together ?
I want to make one Fedora 14 as server that have Date and Time as normal. Is there any to make other fedora 14 get Date and time from that Fedora 14 server
View 9 Replies View RelatedIs there a way for the time at the top of the screen to display seconds as well as the date ?
My clock seems to be about :40 seconds off... before i upgraded from f-13 i had my time controlled by ntp(how to verify ntp is enabled) ? even with network time = yes, it seems to lag a little.
I figured out the network time. it is under a whole separate menu for some reason.
Is there a way to get weather/ temperature like in classic gnome ?
Rite now my clock reads: tue 3:50 pm...Is there a way i can make it read: tue, aug 20, 2011 3:50:45 pm
I need to write a small application which needs to detect if the system time is changed by an another application/user and perform some action as soon as it is detected (maybe log the data that time has changed, along with info about which application/user changed it).
How can this be achieved?
I have good programming experiences in shell script, c and beginner level in python.
I don't need to know when it was changed, just need to know who/what changed it.
The system uses NTP to sync the time, but it is also possible for anyone/any application to change the time(for eg: using the simple "date" command as well).
I want to make a time lapse movie using JPG images but I am really struggling to find the software. I have never actually used photolapse but it seems to be the software I am looking for, only problem is that it's for windows. So I've installed Wine and downloaded the photolapse.exe anyway but it won't open with wine so I don't know if that because it's not compatible? Or because I've done something wrong? I'd really appreciate it if someone could recommend a programme similar to photolapse that works in ubuntu or if someone could help me get photolapse working through wine.
Btw, I'm very new to linux and I'm not very good with IT stuff.
I am getting error like:
"/usr/lib/ruby/1.8/i486-linux/RMagick2.so: This installation of RMagick was configured with ImageMagick 6.5.1 but ImageMagick 6.5.8-10 is in use. (RuntimeError)".
So, I am trying to install ImageMagick 6.5.1. But it gives me error like:
"ERROR: Can't create '/usr/local/man/man3".
And I am using Ubuntu 9.10.