Skype public key is not available
I have Ubuntu 20.04 computer with skype installed. When I update software using apt update, I get an error W: An error…
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Flush exim mail queue
To flush the mail queue, run the command Force another queue run Force another queue run and attempt to flush the frozen…
How to connect to lxd container
lxd is an easy-to-use command-line interface for lxc (Linux container). In this blog post, I will show how to create an lxd…
lxc error Unable to fetch GPG key from keyserver
When i create an lxc container on the Ubuntu server, I get an error root@instance-20210627-0830:~# lxc-create -t download -n ok Setting up…
How to Reset Root Password in MySQL 8.0
If you forget the MySQL root password on MySQL 8.0 server, you can follow the instruction here to reset the root user…
DaVinci Resolve
DaVinci Resolve is a free video editor. Here are some useful shortcuts. Navigation Commands Up/Down Arrow = Move to next/previous clip. L…
Warning: Use of undefined constant OAUTH_REQENGINE_CURL
On an Ubuntu server (Ubuntu 20.04.2 LTS) when running a PHP script, I get the following error. Warning: Use of undefined constant…
configure: error: Couldn’t find pcre.h, try installing the libpcre
When installing PHP OAuth, I get the following error configure: error: Couldn’t find pcre.h, try installing the libpcre development/headers package ERROR: `/tmp/pear/temp/oauth/configure…
CyberPanel FTP not working on Ubuntu Server
On CyberPanel server, FTP was not working. I checked the server with “netstat -lntp” command. No service was listening on port 21.…
How to find Amazon S3 bucket size
To see the disk usage of an Amazon S3 bucket, do the following 1) Click on the bucket name 2) Click on…
How to cut lines separated by multiple spaces?
cut is a Linux command that can be used to cut a line of text with a specific delimiter. I want to…