Ubuntu server firewall install and setting

How To Set Up a Firewall with UFW on Ubuntu 14.04?: https://www.digitalocean.com/community/tutorials/how-to-set-up-a-firewall-with-ufw-on-ubuntu-14-04

Some UFW command:

sudo apt-get install ufw [install]

sudo ufw default deny incoming
sudo ufw default allow outgoing

sudo ufw allow ssh
sudo ufw allow 22 [or your ssh port]

sudo ufw allow http
sudo ufw allow https

sudo ufw allow [port for your web admin!]

sudo ufw allow ftp
sudo ufw deny ftp

sudo ufw allow 22
sudo ufw deny 22

sudo ufw disable

sudo ufw status verbose

sudo ufw enable

Free Ubuntu disk space – What’s eating my disk space?

sudo apt-get clean

sudo apt-get autoremove

sudo apt-get install deborphan

sudo deborphan | xargs sudo apt-get -y remove –purge (2 line)

sudo reboot (or from VNC console)

http://www.ubuntugeek.com/cleaning-up-a-ubuntu-gnulinux-system-updated-with-ubuntu-14-10-and-more-tools-added.html

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The command du “summarizes disk usage of each FILE, recursively for directories:
du -hs /path/to/directory
http://askubuntu.com/questions/1224/how-do-i-determine-the-total-size-of-a-directory-folder-from-the-command-line

Find the top 10 largest files and directories on Ubuntu:
sudo du -a / | sort -n -r | head -n 10

http://wiki.ddenis.com/index.php?title=Find_the_top_10_largest_files_and_directories_on_Ubuntu

What’s eating my disk space?

should tell you where the space is consumed: sudo du -x -d1 -h /

http://unix.stackexchange.com/questions/113840/whats-eating-my-disk-space

Cleaning up Ubuntu 14.10,14.04,13.10 system : http://www.ubuntugeek.com/cleaning-up-a-ubuntu-gnulinux-system-updated-with-ubuntu-14-10-and-more-tools-added.html

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Remove “orphaned” packages

If you want to remove orphaned packages you need to install deborphan package.

Install deborphan in Ubuntu

sudo apt-get install deborphan

Using deborphan

Open Your terminal and enter the following command

sudo deborphan | xargs sudo apt-get -y remove –purge

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sudo apt-get autoremove

Ubuntu snippet

Disable apache directory browsing in ubuntu:

sudo a2dismod autoindex
sudo service apache2 restart

Sending mail with Laravel

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Postfix

If you use Postfix on your server you have to change  config > mail.php

// ‘driver’ => ‘smtp’,
‘driver’ => ‘sendmail’,

Install Postfix: http://www.codechewing.com/library/set-up-postfix-on-ubuntu-server/

https://help.ubuntu.com/14.04/serverguide/postfix.html

useful:

https://www.linode.com/docs/email/postfix/email-with-postfix-dovecot-and-mysql

Configure Postfix to Use Gmail SMTP on Ubuntu https://rtcamp.com/tutorials/linux/ubuntu-postfix-gmail-smtp/

 

Smtp

http://www.havetheknowhow.com/Configure-the-server/Install-ssmtp.html

 

[php snippet=1]

Create your youtube-mp3.org / Saját youtube-mp3.org építése

I tried out on Ubuntu Server.

Check this tutorial: http://www.youtube.com/watch?v=xHjk4mZALSY

You have to install youtube-dl :
sudo apt-get install youtube-dl

If you have problem with running check this link: http://askubuntu.com/questions/431508/unable-to-download-videos-using-youtube-dl-sig-error-how-to-correct

sudo youtube-dl -U

sudo easy_install -U youtube-dl

sudo youtube-dl

My test: sudo youtube-dl – f37 --extract-audio --audio-format mp3 -o "/var/www/mp3 folder/%(title)s.%(ext)s" https://www.youtube.com/watch?v=0w3olGsQ6tQ

f37: audo size setting

… You can set url with PHP:

$validLink = validData($_GET['youtubelink']);

$output = shell_exec('youtube-dl --extract-audio --audio-format mp3 -o "/var/www/mp3 folder/file/%(title)s.%(ext)s" '.$validLink );

 

Mcrypt PHP extension required.

,

You know:
The Laravel framework has a few system requirements:PHP >= 5.4, MCrypt PHP Extension

I got this error after deployment to the server: “Mcrypt PHP extension required.”

Solution:

sudo apt-get install php5-mcrypt
sudo php5enmod mcrypt
sudo service apache2 restart