Posts Tagged "apache"

How to downgrade PHP to 5.2 on Ubuntu?

Here is a quick script to do this task:

Courtsey of Stijn Beauprez from here: http://thejibe.com/blog/10/5/php-5210-debs-ubuntu-104-lucid#comment-9

#! /bin/sh
php_packages=`dpkg -l | grep php | awk ‘{print $2}’`

sudo apt-get remove $php_packages

sed s/lucid/karmic/g /etc/apt/sources.list | sudo tee /etc/apt/sources.list.d/karmic.list

sudo mkdir -p /etc/apt/preferences.d/

for package in $php_packages;
do echo “Package: $package
Pin: release a=karmic
Pin-Priority: 991
” | sudo tee -a /etc/apt/preferences.d/php
done

sudo apt-get update

sudo apt-get install $php_packages

To undo the script and upgrade to php 5.3 you will need to delete the file (sudo rm /etc/apt/preferences.d/php), run sudo apt-get update, and then sudo apt-get dist-upgrade which will get the latest packages for your distribution, including the PHP packages. (Ben Holt)

How to restore / resurrect deleted files in subversion?

If you delete a file or folder from subversion. You can easily restore it using the svn copy command below:

#Example Command (all one line)

svn copy http://subversion.server.com/path/to/deleted/file.psd -r 115 http://subversion.server.com/path/to/deleted/file.psd -m “Commit Message”

Note: 115 is the revision number in subversion where the latest version of file exists.

How to auto start services on boot in Centos / Redhat?

To auto start services in Centos or Redhat OS, you can use builtin chkconfig utility. It is located in /sbin directory. If you are a regular user (non-root), then /sbin may not be in your path. Therefore, you may have to use the full path to access the chkconfig utility.

To auto start a new service:

  • Find out the name of service’s script from /etc/init.d/ directory e.g. mysqld or httpd
  • Add it to chkconfig
    sudo /sbin/chkconfig --add mysqld
  • Make sure it is in the chkconfig.
    sudo /sbin/chkconfig --list mysqld
  • Set it to autostart
    sudo /sbin/chkconfig mysqld on

To stop a service from auto starting on boot

  • sudo /sbin/chkconfig mysqld off

Open Port 80 for Apache in iptables on Centos or Red Hat

Run the following command while logged in as root or sudo:

#Open port 80
/sbin/iptables -I RH-Firewall-1-INPUT 3 -p tcp -m tcp –dport 80 –tcp-flags SYN,RST,ACK SYN -j ACCEPT

#Make the changes permanent
/sbin/iptables-save

One mod deflate filter to rule them all …

Add the following code to your .htaccess file to automatically have all of your text files compressed by mod-deflate on the fly.

Warning: Make sure you are running Apache 2.0 server with Mod Deflate enabled.

AddOutputFilterByType DEFLATE text/html text/plain text/xml application/x-javascript application/javascript text/javascript text/css application/xml

All in one line.