How to optimize WordPress with Ubuntu VPS
Ubuntu Virtual Private Server optimized for WordPress
EC2
Because PNG works best for drawings and simple graphic representations, you can often reduce the size of PNG images to a fraction without making any noticeable difference in the appearance of the picture. Often it is easiest to do image work locally on a PC. Here are some free tools that will save you time.
Run Alpine Linux on Your iPhone in Less Than 5 Minutes
Install zsh with curl, wget and git
apk add zsh curl wget git
Set zsh as the shell
nano /etc/passwd
Change
root:x:0:0:root:/root:/bin/ash
and
[user]:x:1000:1000:Linux User,,,:/home/u:/bin/ash
to
root:x:0:0:root:/root:/bin/zsh
and
[user]:x:1000:1000:Linux User,,,:/home/u:/bin/zsh
replace [user] with your user
Restart the shell
source ~/.zshrc
If you get a error message about missing zsh config files create them manually:
nano .zshenv
nano .zprofile
nano .zshrc
nano .zlogin
echo $SHELL
Check the version of ZSH
zsh --version
Follow the instructions on:
https://ohmyz.sh
Follow the instructions on:
Install the required fonts to
Short version. Never use the root domain with WordPress.
Always prefix the domain with www or something else.
To www or not to www – Should you use www or not in your domain?
Update Ubuntu kernel without reboot using the free Canonical Livepatch Service. Apply critical Ubuntu kernel patches without rebooting Ubuntu. Apply critical kernel security fixes without rebooting. The Canonical Livepatch Service reduces planned or unplanned downtime while maintaining compliance and security. Livepatch is available on LTS based systems from 14.04 LTS within the normal support cycle.
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Increase the max_input_vars in WordPress can be done in several ways. Here is how to increase the max_input_vars value in different ways and then how to confirm the new value. This post is for Ubuntu 16.04 LTS with PHP7
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Garden Gnome Software WordPress plugin for Pano2VR and Object2VR requires the zip PHP extension to unpack the packages containing panoramas.
sudo apt-get install php7.0-zip
Then restart apache web server
sudo service apache2 restart
CloudFlare has the second AMP cache. The first is provided by Google.
Read more about the “CloudFlare.com Accelerated Mobile Links”
When viewing this page on a iPhone using the Desktop PC theme from Thesis / DIYtheme.com then the Cloudflare’s Accelerated Mobile Links  works.
When viewing this page using Wptouch.com, the the AMP won´t work.
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https://www.tbt.biz/studiopress/
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To see how it works, try viewing this post from your mobile device and clicking any of these links: