Forum normally has different layout as compared to normal websites. Forum visitors are also likely to be repeat visitors, which over time could have developed ad-blindness; the predictable nature of the ads make the visitors (maybe unconsciously) ignore the ads.

The tips below will complement the AdSense unit placement strategy so repeat visitors will notice the ads more.

SSH is installed but not enabled by default in Raspbian. It could easily be enabled with the following steps;

1. Open Raspberry Pi Software Configuration Tool (raspi-config) from the terminal.

   sudo raspi-config

2. Select Interfacing Options from the main interface.
   
3. Choose P2 SSH in the Interfacing Options menu
   
4. Select Yes to enable SSH.
   
5. SSH server is now enabled.
   

Certain SSH server is configured to not allow root login mainly due to security and audit reason. You can disallow root login to your server with these simple steps;

1. Set PermitRootLogin to no in /etc/ssh/sshd_config

   PasswordAuthentication no

2. Reload or restart SSH

   How to restart SSH service

When installing Redmine, you don’t have the option to pre-set your password. instead, you’re given a default username and password, which you can change later in you user profile page.

The default username for Redmine is admin and the default password is admin

rpm --import https://download.owncloud.org/download/repositories/stable/CentOS_7/repodata/repomd.xml.key

curl -L https://download.owncloud.org/download/repositories/stable/CentOS_7/ce:stable.repo -o /etc/yum.repos.d/ownCloud.repo

yum clean expire-cache
yum install -y owncloud-files

yum install -y mariadb-server

systemctl start mariadb
systemctl enable mariadb
mysql -u root 

MariaDB [(none)]> CREATE DATABASE owncloud;
Query OK, 1 row affected (0.00 sec)

MariaDB [(none)]> GRANT ALL ON owncloud.* to 'owncloud'@'localhost' IDENTIFIED BY 'password';
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)

MariaDB [(none)]> exit
Bye

yum install -y httpd
systemctl start httpd
systemctl enable httpd

[root@owncloud ~]# firewall-cmd --permanent --add-service=http
success
[root@owncloud ~]# firewall-
firewall-cmd          firewall-offline-cmd
[root@owncloud ~]# firewall
firewall-cmd          firewalld             firewall-offline-cmd
[root@owncloud ~]# firewall-cmd --reload
success

yum install -y epel-release
yum update -y
yum install -y owncloud

This version of ownCloud requires at least PHP 5.6.0
You are currently running 5.4.16. Please update your PHP version.

yum install -y http://rpms.remirepo.net/enterprise/remi-release-7.rpm
yum install -y yum-utils
yum-config-manager --enable remi-php56

yum update -y

php --version


yum install -y php-gd php-intk php-mbstring php-process.x86_64 php-xml


yum install -y policycoreutils-python


chcon -R -t httpd_sys_rw_content_t /var/www/html/owncloud/

yum install php-mysql

Beginning version 7 of vim, it has this nice auto completion feature. It is by default however limited to words that has already been in the current workspace. To use it, simply press [ctrl] +n or [ctrl] + p key while in edit mode. For example:

We can however *teach* vim to autocomplete a whole bunch of other stuffs as well, by using something so called Dictionaries. With this idea we can have auto completion for Python, Ruby, PHP, Bash, and any other programming languages code.

For an example, let’s try to install Python dictionary, by downloading it from here:

http://www.vim.org/scripts/script.php?script_id=850

The next thing to do is to extract the downloaded file to the appropriate folder:

shakir@herugrim ~ $ mkdir ~/.vim
shakir@herugrim ~ $ tar xf pydiction-0.5.tar.gz -C ~/.vim

and add this lines to your ~/.vimrc (be sure to replace “/home/shakir” to your own home directory)

if has("autocmd")
    autocmd FileType python set complete+=k/home/shakir/.vim/pydiction-0.5/pydiction isk+=.,(
endif " has("autocmd"

and let’s see the result:

There are many other scripts available at Vim’s script page worth trying as well.

PNG or Portable Network Graphics is a file format for image that employs lossless data compression. It is meant to replace patent encumbered GIF file format, hence the acronym itself is optionally recursive, which unofficially stands for PNG’s Not Gif.

Employing a lossless data compression, PNG’s images while being sharp can sometimes relatively be big in size. To keep the file size small while maintaining the sharpness of the image, there is a tool available that can further compress a PNG image, losslessly.

The command line based program is called Pngcrush, and is available for both Windows and Linux. The program can reduce the file size for up to 40% less from the original by trying various compression levels of PNG filter methods.

Running the program is as simple as supplying the input and output file, as in the following example;

$ pngcrush  input.png output.png

 | pngcrush 1.6.6
 |    Copyright (C) 1998-2002,2006-2008 Glenn Randers-Pehrson
 |    Copyright (C) 2005      Greg Roelofs
 | This is a free, open-source program.  Permission is irrevocably
 | granted to everyone to use this version of pngcrush without
 | payment of any fee.
 | Executable name is pngcrush
 | It was built with libpng version 1.2.27, and is
 | running with  libpng version 1.2.27 - April 29, 2008

 |    Copyright (C) 1998-2004,2006-2008 Glenn Randers-Pehrson,
 |    Copyright (C) 1996, 1997 Andreas Dilger,
 |    Copyright (C) 1995, Guy Eric Schalnat, Group 42 Inc.,
 | and zlib version 1.2.3.3, Copyright (C) 1998-2002 (or later),
 |    Jean-loup Gailly and Mark Adler.
 | It was compiled with gcc version 4.3.1 and gas version 2.18.50.20080610.

   Recompressing input.png
   Total length of data found in IDAT chunks    =    90188
unknown chunk handling done.
   IDAT length with method   1 (fm 0 zl 4 zs 0) =    94524
   IDAT length with method   2 (fm 1 zl 4 zs 0) =    94871
   IDAT length with method   3 (fm 5 zl 4 zs 1) =    93666
   IDAT length with method   9 (fm 5 zl 2 zs 2) =   181820
   IDAT length with method  10 (fm 5 zl 9 zs 1) =    88388
   Best pngcrush method = 10 (fm 5 zl 9 zs 1) for output.png
     (2.00% IDAT reduction)
     (2.14% filesize reduction)

   CPU time used = 0.510 seconds (decoding 0.060,
          encoding 0.450, other 0.000 seconds)

Pngcrush can also run in batch mode, where running the following command will compress all the PNG files in the current folder, and save it to a folder named compressed, adding the suffix -compr to the file name.

$ pngcrush -d compressed -e -compr.png *.png

Pointing your browser to the root directory of your Symfony project will bring you to the module default of the first app you created for the project. The following is the content of the file web/index.php in your Symfony’s project folder;

<?php


require_once(dirname(__FILE__).'/../config/ProjectConfiguration.class.php');

$configuration = ProjectConfiguration::getApplicationConfiguration('admin', 'prod', false);
sfContext::createInstance($configuration)->dispatch();

In the example, the default app is admin. To make it load the app frontend for example, just replace admin in the file with frontend, and you’re all set.

Files and folders with names beginning with a dot [.] are hidden or invisible in Linux. They are by default not shown when listing the directory content.

To view the hidden files and folders, simply add the -a (or –all) option to the ls command, as in the following example;

$ ls
file  folder
$ ls -a
.  ..  file  folder  .hiddenfile  .hiddenfolder

Do note that the command also display the files . and .. . These are files referring to the current and parent directory respectively, and they exist in every single folder in the system.

There are a few ways to get disk partition UUID (Universally Unique Identifier) in Linux, but some requires installation of additional software or packages.

The following 2 method would normally work on any Linux system.