If you are using WPML and you have a theme which customize strings are not detected you can use the fallowing code, you might need to modify it for your use case:
if (function_exists ( 'icl_register_string' )) {
echo icl_translate('Theme Mod', 'text_in_wpml', get_theme_mod( 'theme_mod_name' ));
}
This basically register the string as it echo it.
And yeah – this will require you to have the strings translation plugin.
Note: This “guide” was meant for Ubuntu 14.04, I haven’t tested it on 16.04 and it most probably will not work, so please do not attempt to use it at all. I doubt that it would even work on 14.04 fallowing this guide.
You can refer to this guide for php7 with apache2 – Ubuntu 16.04 – Install Apache2 and php7
If you want to try the new php7 which GA release (General availability) is about to be finished in mid October, you can fallow these instructions.
I have done this little experiment on a virtual machine, and I strongly advice for you to do the same. But if you have balls go and do it on a production server.
Usually you will need to download and compile the packages on your system, but since I am lazy I searched for a ppa, and seems Ondřej Surý was kind enough to compile them, put them on ppa, and update them regularly.
This is the ppa – https://launchpad.net/~ondrej/+archive/ubuntu/php
I actually had php5 and apache running on this virtual instance, so even before adding the ppa, you need to remove everything php5 related, otherwise you might have conflicts and problems like me:
sudo apt-get remove php5*
Then add the php7 ppa:
sudo add-apt-repository ppa:ondrej/php
run update:
sudo apt-get update
and install php7:
sudo apt-get install php7.0
For apache you will need to enable php7 mod with:
sudo a2enmod php7.0
disable php5 mod (if you had php5 in the first place):
sudo a2dismod php5
Restart apache:
sudo service apache2 restart
and you are good to go.
You can put a file with
<!--?php phpinfo(); ?-->
and take a look at your brand new php7 install.
After that I decided to run a simple test to see if php7 is really that much faster than php5, and run on two identical VM’s the script from http://www.php-benchmark-script.com/.
PHP 5
-------------------------------------- | PHP BENCHMARK SCRIPT | -------------------------------------- Start : 2015-09-20 01:24:52 Server : localhost@192.168.1.139 PHP version : 5.5.9-1ubuntu4.11 Platform : Linux -------------------------------------- test_math : 0.856 sec. test_stringmanipulation : 0.923 sec. test_loops : 0.540 sec. test_ifelse : 0.427 sec. -------------------------------------- Total time: : 2.746 sec.
PHP 7
-------------------------------------- | PHP BENCHMARK SCRIPT | -------------------------------------- Start : 2015-09-20 01:24:55 Server : ubuntu-server@192.168.1.109 PHP version : 7.0.0RC3 Platform : Linux -------------------------------------- test_math : 0.225 sec. test_stringmanipulation : 0.338 sec. test_loops : 0.224 sec. test_ifelse : 0.267 sec. -------------------------------------- Total time: : 1.054 sec.
First of all – I know that is not a good idea, and the world will end if for some reason I want to change our beloved home address.
But for a second there, just think that there is situations when you need this.
In my case I wanted to test some different IP’s against database – and that is the easiest way to give myself any IP address I want, from any country I want, while running the script on the same machine.
Actually it is pretty straight forward solution – but everywhere on the internet when someone ask this a bunch of people are starting to suggest some other solutions – adding another interface, telling them they don’t need to do that etc.
Here is how to assign any IP address to the loopback interface in linux.
You will need root permissions, or just run the commands with sudo. Also this is tested on Ubuntu
For example we gonna use the IP address 46.10.11.185
First we need to change hosts file with:
sudo nano /etc/hosts
Just change your home(127.0.0.1) with 46.10.11.185 in the beginning of the file, so it is going to look something like this:
46.10.11.185 localhost 127.0.0.1 ivan-T430
Then just use ifconfig to change the lo interface IP address with:
sudo ifconfig lo 46.10.11.185
That’s all. Now your local web server will see you as the IP you want.
This is potentially dangerous, and might even make your system unstable.
Make sure you revert all changes and you put back the correct lo IP!
This is very useful trick when you are having site/script that is loading slow, but you are not sure what is the issue. In my case that was leading to extremely slow TTFB(Time to first byte) – around 15 seconds.
To do this we will have to enable slowlog, in my case I am using php5-fpm on Ubuntu, so I need to look for this config file –
/etc/php5/fpm/pool.d/www.conf
And look for something like this:
; The log file for slow requests ; Default Value: not set ; Note: slowlog is mandatory if request_slowlog_timeout is set ;slowlog = log/$pool.log.slow
I want to log the slow request in
/var/log/php5/slow.log
So first of all I need to create that file, and the parent dir php5, if it doesn’t exists with
mkdir /var/log/php5 touch /var/log/php5/slow.log
And then add the fallowing values to our fpm config file –
slowlog = /var/log/php5/slow.log request_slowlog_timeout = 8s
request_slowlog_timeout
Will determine how long before script will be logged. In my case anything that takes more than 8 seconds will be logged, of course you can use any other value.
Restart php5-fpm so the changes take effect
service php5-fpm restart
And then you can monitor the log in real time while browsing the site:
tail -f /var/log/php5/slow.log
For me the problem was malware injected in footer.php in one of the WordPress sites:
root@linuxvps:~# tail -f /var/log/php5/slow.log script_filename = /var/www/site.info/public_html/index.php [0x00007f9bcb861fe0] curl_exec() /var/www/site.info/public_html/wp-content/themes/2014/footer.php(23) : assert code(1) : eval()'d code(1) : eval()'d code:14 [0x00007f9bcb861ed8] getContents() /var/www/site.info/public_html/wp-content/themes/2014/footer.php(23) : assert code(1) : eval()'d code(1) : eval()'d code:36 [0x00007f9bcb861df0] +++ dump failed
$fimage = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'full', false ); echo $fimage[0]; // the url
Sometimes is handy to see what number of visitors you had on you site/server based on the access log – in this case Nginx access log. This will count every different IP, so a chunk of these visitors will be bots.
grep "\[13/Jul/2015" /var/log/nginx/access.log | cut -d" " -f1 | sort | uniq | wc -l
Another slightly different variation
cat access_log | awk '{print $1}' | sort | uniq -c | sort -n | tail
So few days ago Google released deep dream neural network, not that I am so into AI, but the results around were pretty tripy, so I had to give it a go.
After researching for a few hours online to find a guide on how to control my Thinkpad’s fan speed I realized that the new models have some differences from previous models and the guides available are not complete if not wrong. So, I am making this tutorial for anyone that has a new Thinkpad ( x30/x20 models ) and needs to control his fan in order to keep the noise down and get more battery life.
Every step below uses the terminal so open an instance with the combination CRTL + ALT + T
The first thing we will do is to install a program that will provide us information about the sensors of the laptop and their temperatures
sudo apt-get install lm-sensors
Configure the application in order to find every available sensor
sudo sensors-detect
Answer Yes to every question and the last confirmation for saving the changes made.
Install thinkfan which is our main program
sudo apt-get install thinkfan
Add the coretemp module to the startup list. It will provide us the temperature inputs.
echo coretemp >> /etc/modules
Load the coretemp module
sudo modprobe coretemp
The next step is to find your temperature inputs so take note the results of the following command
sudo find /sys/devices -type f -name "temp*_input"
If you don’t get any outputs ( similar to the next step ) please Reboot and continue from this step.
It’s time to edit our thinkfan configuration
sudo gedit /etc/thinkfan.conf
Go to the line where it says #sensor /proc/acpi/ibm/thermal … and below that line ( which should be commented since thermal is not supported in the new thinkpads ) insert something like the following:
sensor /sys/devices/platform/coretemp.0/temp1_input sensor /sys/devices/platform/coretemp.0/temp2_input sensor /sys/devices/platform/coretemp.0/temp3_input sensor /sys/devices/virtual/hwmon/hwmon0/temp1_input
The above lines are the results from Step 5 prefixed with ‘sensor ‘.
Time to set the temperature rules. The format is: ( FAN_LEVEL, LOW_TEMP, HIGH_TEMP ) meaning that each FAN_LEVEL will start when the highest temperature reported by all the sensors meets its LOW_TEMP and if it surpasses its HIGH_TEMP it will go to the next FAN_LEVEL rule. If it goes below the LOW_TEMP it will fallback to the previous FAN_LEVEL rule. Please take notice that the HIGH_TEMP of a rule must be between the LOW_TEMP & HIGH_TEMP of the rule that follows.
My settings are:
#(FAN_LEVEL, LOW, HIGH) (0, 0, 60) (1, 57, 63) (2, 60, 66) (3, 64, 68) (4, 66, 72) (5, 70, 74) (7, 72, 32767)
NOTE: I am not responsible for any problems you encounter with these rules. They are fine as per my configuration so please test them before using them and if necessary adjust them to your needs.
Now, we must add a configuration file into the modprobe.d
sudo echo "options thinkpad_acpi fan_control=1" >> /etc/modprobe.d/thinkpad.conf
If you want to start thinkfan automatically at boot-time please type the following
sudo gedit /etc/default/thinkfan
Change the line START=no to START=yes. If the line does not exist add it yourself.
RESTART your laptop and everything should work as expected. Test your laptop’s temperatures ( using sensors command ) under different workloads and verify that the fan speed is as per the rules you defined.
If you encounter a typing mistake or a step not working for you please comment below. On the contrary if everything works then comment below verifying the guide.
This information was taken from here – http://mastergenius.net/wordpress/2012/07/20/control-your-thinkpad-t430-fan-speed-in-ubuntu-12-04/
The time I need it the site was trowing Nginx errors, so I had to use time machine to get it.
The fallowing was tested on ThinkPad T430 with Ubuntu Mate, and it still works without any problems.
This will fix security vulnerability called Logjam. In short the vulnerability allow man-in-the-middle attack by downgrading TLS connection and manipulating data. You can find full disclosure here.
The solution bellow is just for Nginx, because currently I don’t Apache anywhere right now and I don’t care, but should be pretty easy to do on Apache as well. Also you should fix all other services which are using SSL like FTP, Mail etc.
First check if you have the directory
/etc/ssl/private
If you don’t have it, you will need to create it, and change it’s permissions:
mkdir -p /etc/ssl/private chmod 710 /etc/ssl/private
Then you need to create DH parameter file, and change the permissions:
cd /etc/ssl/private openssl dhparam -out dhparams.pem 2048 chmod 600 dhparams.pem
Be patient as this might take a little while, and will consume your CPU.
It was few minutes in my case.
Now you need to edit few things in the nginx config file:
nano /etc/nginx/nginx.conf
Replace or add the fallowing to the httpd section:
ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
and then add the fallowing two lines:
ssl_prefer_server_ciphers on; ssl_dhparam /etc/ssl/private/dhparams.pem;
Run configtest to see if you forgot some semicolon:
service nginx configtest
and if it says it is OK, you can restart it.
In your wp-config.php replace:
define('WP_DEBUG', false);
with:
define('WP_DEBUG', true);
define('WP_DEBUG_LOG', true);
define('WP_DEBUG_DISPLAY', false);
That will output any errors to file called debug.log in your wp-content directory.
It is far better to save errors to a file, otherwise they will be shown in your site.