You can use lame with the –mp3input option. For example you can do a downsampling of the mp3 quality, specifing the a new lower bitrate using the -b option. Welcome to , a friendly and active Linux Community. You are currently viewing LQ as a guest. By joining our community you. The shuf command (part of coreutils) can do this: shuf -n file. And at least for now non-ancient versions (added in a commit from ).
|Published (Last):||19 April 2004|
|PDF File Size:||15.70 Mb|
|ePub File Size:||18.11 Mb|
|Price:||Free* [*Free Regsitration Required]|
Sign up or log in Sign up using Google.
You can click save on the bottom right corner of the window Figure 5 8 Now, just select the output file, click start and wait a little bit. If you know the number of lines in the file like 1e6 in your caseyou can do: If you’re still tight for space, especially for the multipage PDFs, you could compress further by downsampe the files to a ZIP or other archive.
It needs to be scriptable. The convert command takes an image, performs actions on it, and saves the image with the file name you specify. Note that it assumes n is the number of lines in the file.
If you want to force the image to become a specific size — even if it messes up the aspect ratio — add an exclamation point to the dimensions:. Is the down-sampling acceptable? If you don’t need “exactly” n sampled lines you can sample a ratio like this:.
You can also integrate batch processing commands into a Bash shell script to automate image-processing operations.
They hope these examples will help you to get a better understanding of the Linux system and that you feel downsamlle to try out things on your own. This will output one line from the file. Post your question in this forum.
Thu Mar 07, 2: Is there any more capable CLI software than this? How to resize an image through the terminal?
Lower values will result in smaller files dowsnample lower quality. To install it on Ubuntu, use the following command:. How to randomly sample a subset of a file Ask Question. Hoewever, extension to other tasks is simple and I might treat it in future posts. Leave a Reply Cancel reply Enter your comment here Try the different settings, maybe convert it to monosee what produces still acceptable results for you.
The second script makes it pixels wide and calculates the proportional height. The users who voted to linix gave this specific reason: From the lame manuale page: Note also that sort is in the same section, and it clearly doesn’t require sorted input. If you file size isn’t huge, you can use Sort random. Thu Mar 07, 3: I’ve updated my question to clearer about that.
The number must be between 1 and For more advanced trainees it can be a desktop reference, and a collection of the base knowledge needed to proceed with system and network administration.
Necessary cookies are absolutely essential for the website to function properly. This category only includes cookies that ensures basic functionalities and security features of the website. These cookies do not store any personal information.