How to fix error: WebSocket is already in CLOSING or CLOSED state
Some errors you can see: Example 1: Example 2: Example 3: How to fix this error? Server: if you use nodejs If you use socket.io,…
Author: phptuts
How to install memcached on Ubuntu
We use Ubuntu 16.04.5 LTS 64bits Result: Done! Check:
How to use Amazon Lightsail Linux with Putty and Bitvise Tunnelier
After create VPS, you will see info: Convert your private key See: How to use AWS EC2 Linux with Putty and Bitvise Tunnelier Starting a…
How to batch convert png photos to jpg or vice versa
Example: you have an folder /root/fff7860c7319fa20c8340eb813637fba-i/ with many photos like this figure: And you want to convert all pagepng-*.png files to jpg format. How to…
How to install calibre ebook on CentOS
calibre is a powerful and easy to use e-book manager. Users say it’s outstanding and a must-have. It’ll allow you to do nearly everything and…
CentOS: how to fix error: Encoding file `eu1enc.def’ not found
Here is an example: How to fix this error? Install package texlive-euenc Result: Done! You can install more Result:
How to install pandoc on CentOS
Pandoc is a universal document converter Home page: http://pandoc.org/ Step 1: Download releases here: https://github.com/jgm/pandoc/releases Step 2: Step 3: Step 4: install xelatex (in package:…
CentOS: how to fix error: Having multiple in isn’t supported and may not work as expected
If you get error like: See content of file eg: /opt/libreoffice4.0/share/fonts/truetype/fc_local.conf You see a list of 2 font names aliased to Arial Narrow. You delete…
How to install old version of LibreOffice on CentOS
Access this link: http://downloadarchive.documentfoundation.org/libreoffice/old/ to see all old versions of LibreOffice Now we see all versions from 3.3.0.4 to 6.2.0.1 Example install LibreOffice v3.3.0 rc4…
How to install OpenOffice on CentOS
OpenOffice.org (OOo), commonly known as OpenOffice, is a discontinued open-source office suite. It was an open-sourced version of the earlier StarOffice, which Sun Microsystems acquired…