Posted 10 Aug 2009 — by admin
Category Linux
Login as the root user or as a user that can execute sudo commands.
#open this file for editing...
vim /etc/ssh/sshd_config
Find the line that reads
Port 22
Change this to an different and an available port number…
Port 8000
Next reload ssh
/etc/init.d/ssh reload
You won’t be kicked out of your session. But if you want to open a new connection to your server you need to specify the port number for the connection.
ssh -p8000 root@yourdomain.com
Posted 07 Aug 2009 — by admin
Category Linux
I normally install postfix for my MTA. However, I’ve never really used sendmail so I’d decide to give it a whirl for a new application I’m working on. I don’t use it for anything but handling the mail that the application needs to send out, like new user welcome emails, password resets, etc.
apt-get install sendmail
Sendmail, unlike postfix, won’t work out of the box. Postfix will prompt you for the necessary config setup when running the install. Sendmail won’t, and therefore it’s not ‘out of the box’. You’ll have to make some modifications on your own. Nothing major but this is what I’ve found in order to get it to work, reliably and quickly. The first thing I did was add the fully qualified domain name to my /etc/hosts file
#vim /etc/hosts
127.0.0.1 www.mydomain.com
After this I added the fully qualified domain name to my apache default configuration file
#/etc/apache2/sites-available/default
ServerName www.mydomain.com
#vhost info etc...
Reload and restart…
/etc/init.d/apache2 force-reload
/etc/init.d/sendmail restart
You can test sendmail like so
sendmail email@example.com
hello
from
me
.
This should deliver a message to you (the “.” on a new line, followed by a new line, closes the message).
Posted 05 Aug 2009 — by admin
Category Linux
apt-get install openssl
openssl genrsa -des3 -out server.key 1024
openssl req -new -key server.key -out server.csr
You’ll be prompted to enter a password (don’t forget it!) as well as fill in company identity information. The most important part is the common name, which is actually the domain you are requesting the certificate for. If you’re going without a wildcard certificate you can specify the subdomain ( secure.seanbehan.com ) otherwise it assumes www.seanbehan.com and seanbehan.com to be the same, and will cover both domains www.seanbehan.com and seanbehan.com… however, it will not cover anything.seanbehan.com. Unless you get a wildcard certificate (these cost more money). Enter company details such as country code, state and the rest are pretty self explanatory.
You need to then submit the server.csr file contents to a certificate authority like godaddy, verisign, etc.
Grab the contents by opening up the file
vim server.csr
After you submit it to them, they then will confirm that everything is correct and then give you the signed certificate back for your use on your server. Unless of course you’re faking your company details and are an evil, wicked spammer!
The certificate authority (CA) should give you instructions for installing the cert, as well as other files so that you can serve secure pages w/out any browser troubles!
Posted 04 Aug 2009 — by admin
Category Linux
It’s a pretty straightforward process. Download the source and compile it. There isn’t a package for it so here are the commands.
wget http://sphinxsearch.com/downloads/sphinx-0.9.8.1.tar.gz
tar xzvf sphinx-0.9.8.1.tar.gz
cd sphinx-0.9.8.1/
./configure
make
make install
When it’s done nothing fancy happens. You’ll need to test it out w/ an application/ the api.
Posted 29 Jul 2009 — by admin
Category Linux
The format is as follows
ffmpeg -i <input file> -ss <starting point> -t <length of capture> <output file>
ffmpeg -i Input_File.flv -ss 00:00:00 -t 00:10:00 Output_Filename.flv
http://www.surfthedream.com.au/blog/Archives/november-2008/how-to-split-a-movie-file-into-multiple-parts
Posted 11 Jul 2009 — by admin
Category Linux
How to find your user SHELL and PATH on Linux
echo $PATH
echo $SHELL
Which will print the paths to the screen
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
/bin/bash
Posted 26 Jun 2009 — by admin
Category Linux
Short and sweet! Just remember that the finished zip filename is the first argument and the directory you wish to recursively zip comes after.
zip -r name_of_your_directory.zip name_of_your_directory
Posted 25 Jun 2009 — by admin
Category Linux
You can either link up the modules yourself like this:
ln -s /etc/apache2/mods-available/userdir.conf /etc/apache2/mods-enabled/userdir.conf
ln -s /etc/apache2/mods-available/userdir.load /etc/apache2/mods-enabled/userdir.load
Or you can use the Apache utility
a2enmod userdir
Just remember to restart the server with
/etc/init.d/apache2 force-reload
Also, keep in mind that by default, the home directory for your user will need to require a public_html directory.
/home/username/public_html
