svn status | grep -v "^.[ \t]*\..*" | grep "^?" | awk '{print $2}' | xargs svn add
Apr 18, 2012
SVN recursive add all
Apr 12, 2012
Create a video from an image and mp3 using ffmpeg
If you want to create a video with a static image and a background music (face it, you want to upload a song to youtube!), here's a very easy way using ffmpeg.
-t: duration in seconds
-loop 1: puts the image on all frames
-i: input files - the image and the mp3
PS: this is possibly not the best way because for a 242 seconds video I got video:6351kB audio:3782kB wich is.. stupid! I need to find a way to use key-frames so I can drastically reduce the video size! I tried using the -g <int> argument but got the same filesize :\
ffmpeg -loop 1 -t 242 -i the_image.jpg -i the_song.mp3 target_video.mpg
-t: duration in seconds
-loop 1: puts the image on all frames
-i: input files - the image and the mp3
PS: this is possibly not the best way because for a 242 seconds video I got video:6351kB audio:3782kB wich is.. stupid! I need to find a way to use key-frames so I can drastically reduce the video size! I tried using the -g <int> argument but got the same filesize :\
Dec 19, 2011
Javascript check element visibility
The following function checks if a given element is within browser's viewport:
function isScrolledIntoView(elem)
{
var docViewTop = $(window).scrollTop();
var docViewBottom = docViewTop + $(window).height();
var elemTop = $(elem).offset().top;
var elemBottom = elemTop + $(elem).height();
return ((elemBottom >= docViewTop) && (elemTop <= docViewBottom));
}
Sample Usage
On this example I'll be loading iframes only when they are on the browsers viewport. For this to work I initially printed all iframe's without the SRC attribute. Instead, I used the REL attribute as a placeholder for the iframe destination:
var my_interval = setInterval(checkIframesVisibility, 1000);
function checkIframesVisibility()
{
$("iframe").each(function(i) {
if (isScrolledIntoView($(this)))
{
if ($(this).attr('src') == "")
{
$(this).attr('src', $(this).attr('rel'));
$(this).iframeAutoHeight({debug: false, diagnostics: false});
}
}
});
}
function isScrolledIntoView(elem)
{
var docViewTop = $(window).scrollTop();
var docViewBottom = docViewTop + $(window).height();
var elemTop = $(elem).offset().top;
var elemBottom = elemTop + $(elem).height();
return ((elemBottom >= docViewTop) && (elemTop <= docViewBottom));
}
PS: The iframeAutoHeight is a plugin that auto resizes the iframe to the content's height.
Hope you find this is useful!
Nov 10, 2011
Global Apache 404 Page
This will setup a single 404 page for all domains on your web server.
1st: create a fancy 404 page like this one:
2nd: put it somewhere on your server:
3rd: edit your apache configuration (/etc/apache2/apache2.conf on ubuntu machines):
1st: create a fancy 404 page like this one:
2nd: put it somewhere on your server:
/etc/apache2/error-documents/404.html
3rd: edit your apache configuration (/etc/apache2/apache2.conf on ubuntu machines):
Alias /404 /etc/apache2/error-documents/404.html ErrorDocument 404 /404
Nov 8, 2011
Linux jail/lock/chroot users to homedir
Jailing, Chrooting, Locking users/applications...
Yes, they do give it a lot of names... but if all you want to do is to create a user on your system and give him ssh/ftp access without exposing your whole system - therefore jailing him - just follow this steps. I promise it will take no more than 5 mins!
STEP 1
download & extract jailkit, then:
./configure make make install
STEP 2
set up the jail path:
sudo mkdir /jail sudo chown root:root /jail
STEP 3
define the environment
sudo jk_init -v /jail basicshell sudo jk_init -v /jail editors sudo jk_init -v /jail extendedshell sudo jk_init -v /jail netutils sudo jk_init -v /jail ssh sudo jk_init -v /jail sftp sudo jk_init -v /jail jk_lsh
STEP 4
add a user
sudo adduser dummy sudo jk_jailuser -m -j /jail dummy sudo mkdir -p /jail/home/dummy chown dummy:dummy /jail/home/dummy
VERIFY
/jail/etc/group should look like:
dummy:x:500:
/jail/etc/passwd should look like:
dummy:x:1001:500::/home/dummy:/bin/bash
Now login via ssh/sftp with the dummy user. You should see a small portion of a filesystem if you change directory do / but you won't be able to see the REAL system files.
Thanks to http://ubuntuforums.org/showthread.php?t=248724 !
Oct 6, 2011
Linux convert FLAC to MP3 under terminal
Using the terminal, navigate to your .flac folder.
Run the following command:
Note: You'll need both flac and lame installed (obviously).
If you need a more advanced script try this solution over linuxtutorialblog.com.
Run the following command:
for file in *.flac; do flac -cd "$file" | lame -h - "${file%.flac}.mp3"; done
Note: You'll need both flac and lame installed (obviously).
If you need a more advanced script try this solution over linuxtutorialblog.com.
Oct 4, 2011
Allow symbolic links on Mac OS's native Apache
Edit:
Put:
/etc/apache2/users/<YOURUSER>.conf
Put:
<Directory "/Users/<YOURUSER>/Sites/">
Options Indexes MultiViews FollowSymLinks
AllowOverride None
Order allow,deny
Allow from all
</Directory>
Terminal colors on Mac OS
edit:
~/.bash_profileput:
export CLICOLOR=1 export LSCOLORS=GxFxCxDxBxegedabagaced
Jun 29, 2011
MySQL export to file
Export a query result to a file directly from MySQL.
First open mysql with "-s -t" arguments - this will force mysql to output without boxing characters:
Now:
It's all good, peace!
First open mysql with "-s -t" arguments - this will force mysql to output without boxing characters:
mysql -s -t -u <user> <database_name>
Now:
SELECT * FROM table INTO OUTFILE '/path/to/file.txt'
It's all good, peace!
Typical MySQL encoding problem
Don't you just HATE encodings?
Ever wanted to insert something in MySQL
and were 100% sure the text/database/table/fields were in UTF-8 and by some reason the text got all scrambled up?
This usually works for me:
Hope it helps!
Ever wanted to insert something in MySQL
This usually works for me:
mysql_query("SET NAMES 'utf8'");Hope it helps!
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