If you need to show all cron tasks in a linux machine go to /var/spool/cron and run the following command
cat * > crones.txt
Now , you can find all cron details in the above file (crones.txt)
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Install Apache and IIS on Windws server
You can install both apache and IIS on same port if the system has two IP address. You may install IIS and apache server in normal way. IF IIS is started prior to Apache, IIS will take all the IP address and apache cannot start on the same port. Do fix this, we need to [...]
Safari can’t verify the identity of the website
November 26th, 2009 
Aneesh You may get some error like given below in Mac machines when you browse SSL pages
Safari can’t verify the identity of the website “example.com” The certificate for this website was signed by an unknown certifying authority. You might be connectng tp a website that is preteneing to be “domainname.com”, which could put your confidential information at risk. Would you like to connect to the website anyway ?
To fix the problem add SSLCertificateChainFile to your apache configuration file
SSLEngine On
SSLCertificateFile /etc/httpd/ssl/*.example.com.crt
SSLCertificateKeyFile /etc/httpd/ssl/*.example.com.key
SSLCertificateChainFile /etc/httpd/ssl/gd_bundle.crt
change php.ini values using htaccess
November 25th, 2009 Aneesh - Using php_flag we can change php.ini values through an .htaccess file. For example if we need to change the php value of register_globals to Off we can do it using the following .htaccess
php_flag register_globals off
Install ffmpeg on linux
November 25th, 2009 Aneesh 1. Create a directory to do our work in
mkdir ~/ffmpeg
cd ~/ffmpeg
2. Get all the source fileswget http://www3.mplayerhq.hu/MPlayer/releases/codecs/essential-20061022.tar.bz2
wget http://rubyforge.org/frs/download.php/9225/flvtool2_1.0.5_rc6.tgz
wget http://easynews.dl.sourceforge.net/sourceforge/lame/lame-3.97.tar.gz
wget http://superb-west.dl.sourceforge.net/sourceforge/ffmpeg-php/ffmpeg-php-0.5.0.tbz2
wget http://downloads.xiph.org/releases/ogg/libogg-1.1.3.tar.gz
wget http://downloads.xiph.org/releases/vorbis/libvorbis-1.1.2.tar.gz
3. Extract all the source files
bunzip2 essential-20061022.tar.bz2; tar xvf essential-20061022.tar
tar zxvf flvtool2_1.0.5_rc6.tgz
tar zxvf lame-3.97.tar.gz
bunzip2 ffmpeg-php-0.5.0.tbz2; tar xvf ffmpeg-php-0.5.0.tar
tar zxvf libogg-1.1.3.tar.gz
tar zxvf libvorbis-1.1.2.tar.gz
4. Create the codecs directory & import them
mkdir /usr/local/lib/codecs/
mv essential-20061022/* /usr/local/lib/codecs/
chmod -R 755 /usr/local/lib/codecs/
5. Install SVN/Ruby (Depends on OS, this is for RHEL/CentOS)
yum install subversion
yum install ruby
yum install ncurses-devel
6. Get the latest FFMPEG/MPlayer from the subversion
svn checkout svn://svn.mplayerhq.hu/ffmpeg/trunk ffmpeg
svn checkout svn://svn.mplayerhq.hu/mplayer/trunk mplayer
7. Compile LAME
cd ~/ffmpeg/lame-3.97
./configure
make
make install
8. Compile libOGG
cd ~/ffmpeg/libogg-1.1.3
./configure
make
make install
9. Compile libVorbis
cd ~/ffmpeg/libvorbis-1.1.2
./configure
make
make install
10. Compile flvtool2
cd ~/ffmpeg/flvtool2_1.0.5_rc6
ruby setup.rb config
ruby setup.rb setup
ruby setup.rb install
11. Compile MPlayer
cd ~/ffmpeg/mplayer
./configure
make
make install
12. Compile FFMPEG
cd ~/ffmpeg/ffmpeg
./configure --enable-libmp3lame --enable-libvorbis --disable-mmx --enable-shared
echo '#define HAVE_LRINTF 1' >> config.h
make
make install
13. Finalize the codec setups
ln -s /usr/local/lib/libavformat.so.50 /usr/lib/libavformat.so.50
ln -s /usr/local/lib/libavcodec.so.51 /usr/lib/libavcodec.so.51
ln -s /usr/local/lib/libavutil.so.49 /usr/lib/libavutil.so.49
ln -s /usr/local/lib/libmp3lame.so.0 /usr/lib/libmp3lame.so.0
ln -s /usr/local/lib/libavformat.so.51 /usr/lib/libavformat.so.51
14. Compile FFMPEG-PHP
cd ~/ffmpeg/ ffmpeg-php-0.5.0
phpize
./configure
make
make install
15. Install FFMPEG-PHP (make sure the php.ini path is correct.)
echo 'extension=/usr/local/lib/php/extensions/ no-debug-non-zts-20020429/ffmpeg.so' >> /usr/local/Zend/etc/php.ini
16. Restart Apache to load FFMPEG-PHP (Depends on OS, this is for RHEL/CentOS)
service httpd restart
17. Verify if it works
php -r 'phpinfo();' | grep ffmpeg
If you get a few lines such as
ffmpeg
ffmpeg support (ffmpeg-php) => enabled
ffmpeg-php version => 0.5.0
ffmpeg.allow_persistent => 0 => 0
Then everything is installed and working. FFMPEG, FFMPEG-PHP, MPlayer, MEncoder, flv2tool, LAME MP3 encoder & libOGG.
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Common Errors may occur
1. When you try to ‘make ‘libVorbis you may get an error ” checking for ogg >= 1.0… checking for Ogg… not found ”
Solution : Install libogg ( yum install libogg ), then Make it again
restrict ftp access using iptables
November 25th, 2009 Aneesh Assume the server’s IP address is 125.121.156.156. Now we can block all ftp connections to the server withe the following ip tables rule
iptables -I INPUT -s 0.0.0.0 -d125.121.156.156 -p tcp -m tcp –dport 21 -j DROP
Now we can allow only authorised ip by the folloing rule. Assume the IP to be allowed is 121.125.121.125
iptables -I INPUT -s 121.125.121.125 -d 125.121.156.156 -p tcp -m tcp –dport 21 -j ACCEP
Now save the iptables rule using following command
/etc/init.d/iptables save
