filesize | 易学教程

How to get the file size of a remotely stored image? (php)

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问题 Let's say we have an image file, stored in a remote server (for example, let's take this image), how can we determine (in PHP code) it's file size? If the file was on server, we would have used filesize (see here), but this wouldn't work on a remote file (see here). The other alternative is to check for the "Content-Length", but I believe it wouldn't work for an image file (see here) I would like for a solution like the one given here (e.g, something like: <?php function get_remote_size($url)

Way to reduce size of .ttf fonts?

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Is there any way to reduce the size of the .ttf fonts? i.e. if we want to remove some glyps which we are not using. With Google Web Fonts , you can limit the character set like: //fonts.googleapis.com/css?family=FontName&text=Lorem%20Ipsum This would be particularly useful if Google had icon fonts like Font Awesome You can use fontforge to reduce the file size This is explained at http://www.cnx-software.com/2010/02/19/reducing-truetype-font-file-size-for-embedded-systems/ FontSquirrel's Webfont generator makes it very easy to reduce a font's filesize. Upload your font Choose Expert... Choose

HDFS block size Vs actual file size

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I know that HDFS stores data using the regular linux file system in the data nodes. My HDFS block size is 128 MB . Lets say that I have 10 GB of disk space in my hadoop cluster that means, HDFS initially has 80 blocks as available storage. If I create a small file of say 12.8 MB , #available HDFS blocks will become 79. What happens if I create another small file of 12.8 MB ? Will the #availbale blocks stay at 79 or will it come down to 78? In the former case, HDFS basically recalculates the #available blocks after each block allocation based on the available free disk space so, #available

total size of group of files selected with 'find'

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For instance, I have a large filesystem that is filling up faster than I expected. So I look for what's being added: find /rapidly_shrinking_drive/ -type f -mtime -1 -ls | less And I find, well, lots of stuff. Thousands of files of six-seven types. I can single out a type and count them: find /rapidly_shrinking_drive/ -name "*offender1*" -mtime -1 -ls | wc -l but what I'd really like is to be able to get the total size on disk of these files: find /rapidly_shrinking_drive/ -name "*offender1*" -mtime -1 | howmuchspace I'm open to a Perl one-liner for this, if someone's got one, but I'm not

Get Large File Size in C

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问题 Before anyone complains of "duplicate", I've been checking SO quite thoroughly, but there seem to be no clean answer yet, although the question looks quite simple. I'm looking for a portable C code , which is able to provide the size of a file, even if such a file is bigger than 4GB. The usual method (fseek, ftell) works fine, as long as the file remains < 2GB. It's fairly well supported everywhere, so I'm trying to find something equivalent. Unfortunately, the updated methods (fseeko, ftello

How to achieve smaller size of the executable?

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Very recently I have come back to Delphi after a long pause and written a rather straightforward utility app my client requested to support an older release... I know these days the size does not matter much, but it struck me as odd that the one-unit application, when compiled, amounted to 1'084'416 b executable. The one and only .pas unit I wrote is some 20.8k large, mostly because of the richness of the gui. The uses clause is as follows: uses Windows, Messages, SysUtils, Variants, Classes, Controls, Forms, strutils, Dialogs, ADODB, DB, DBGrids, ExtCtrls, DBCtrls, StdCtrls, Grids, Menus,

How can I the size of an image file from the URL?

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问题 Images and script are hosted on the same account (one site), but we know only the URL of the image. $image = "http://example.com/images/full-1091.jpg" How can we get the size of this file? Pseudo-code: { do something with $image and get $image_size } echo $image_size; I would prefer $image_size to be formatted in human-readable file sizes, like "156,8 Kbytes" or "20,1 Mbytes". 回答1: Use filesize function like this: echo filesize($filename) . ' bytes'; You can also format the unit of the size

How do I get the size of a file in megabytes using Perl?

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问题 I want to get the size of a file on disk in megabytes. Using the -s operator gives me the size in bytes, but I'm going to assume that then dividing this by a magic number is a bad idea: my $size_in_mb = (-s $fh) / (1024 * 1024); Should I just use a read-only variable to define 1024 or is there a programmatic way to obtain the amount of bytes in a kilobyte? EDIT: Updated the incorrect calculation. 回答1: If you'd like to avoid magic numbers, try the CPAN module Number::Bytes::Human. use Number:

what happens when cookies file exceeds maximum size?

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问题 What really happens when cookies file exceeds maximum size? 回答1: The typical behavior of most browsers, to my knowledge, is to simply truncate the oldest data that does not fit. For example, create cookies 1 through 9. When creating cookie 10 and the data size is going to overflow, cookie 1 is simply discarded. In general practice, if you are worried about bumping into the limit and loosing cookies to overflow, it is probably time to rethink your strategy of what you are storing and start

Git: show total file size difference between two commits?

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Is it possible to show the total file size difference between two commits? Something like: $ git file-size-diff 7f3219 bad418 # I wish this worked :) -1234 bytes I’ve tried: $ git diff --patch-with-stat And that shows the file size difference for each binary file in the diff — but not for text files, and not the total file size difference. Any ideas? patthoyts git cat-file -s will output the size in bytes of an object in git. git diff-tree can tell you the differences between one tree and another. Putting this together into a script called git-file-size-diff located somewhere on your PATH will