January 8, 2020 in Tips and Tricks
Each network call takes one second. This is highly simplified points : If we call the CSS file first, the browser will get the CSS in one second. If we call the javascript first, the browser will get the CSS in two seconds (one second to retrieve the javascript + one second to retrieve the […]
January 4, 2020 in Tips and Tricks
This is a good example of how CSS3 should be used. To provide additional effects to users with modern browsers, without relying on graphics, and have solid fallback (in this case just a black 1px line, for users in non-css3 supporting browsers. EXAMPLE 1: EXAMPLE 2:
January 3, 2020 in Tips and Tricks, Ubuntu
To disable error reporting on Ubuntu, run the following command to open the apport configuration file. You will see a line enabled=1. To disable error reporting, change the value of enabled from 1 to 0. Press CTRL+O to save the file. CTRL+X to exit out of the file. And you are done! You won’t see error pop up any more! Or completely […]
January 2, 2020 in Tips and Tricks, Ubuntu
The Message of the day (MOTD) in Ubuntu is controlled by the directory /etc/update-motd.d/ (and the file /etc/update-motd, if any). Particularly, the Landscape info resides in the file /etc/update-motd.d/50-landscape-sysinfo, as simpoir mentioned in their answer. On my Ubuntu 16.04, the file /etc/update-motd.d/50-landscape-sysinfo contains some entry settings and then an if block. So to display the information regardless of the condition, you can simply remove all contents […]
December 30, 2019 in Learning, Tips and Tricks, Ubuntu
Find the size of a directory in Linux To find out the size of a directory, we will use ‘du’ command. du stands for disk usage. The typical syntax of du command is given below: Let us type the ‘du’ command in the Terminal and see what it displays. As you see above, du command displays the disk usage of the directories along […]
December 27, 2019 in Tips and Tricks, Ubuntu
What is this all about? Debugging program crashes without any automated tools has been pretty time consuming and hard for both developers and users. Many program crashes remain unreported or unfixed because: Many crashes are not easily reproducible. End users do not know how to prepare a report that is really useful for developers, like […]
December 24, 2019 in Tips and Tricks, Ubuntu
show total of disk space $ df -h –total which will show it in one line as (1) total space (2) total space used (3) total space still available (4) percentage of drive used. All of this in gigabytes. I mapped this to a shell command dspace and when I type that into terminal it instantly shows […]
December 23, 2019 in Learning, Tips and Tricks, Ubuntu
Fail2ban is a log-parsing application that monitors system logs for symptoms of an automated attack on your Linode. When an attempted compromise is located, using the defined parameters, Fail2ban will add a new rule to iptables to block the IP address of the attacker, either for a set amount of time or permanently. Fail2ban can […]
December 21, 2019 in Tips and Tricks
try this. Launch a new instance (recovery instance). Stop the original instance (DO NOT TERMINATE) Detach the volume (problem volume) from the original instance Attached it to the recovery instance as /dev/sdf. Login to the recovery instance via ssh/putty Run sudo lsblk to display attached volumes and confirm the name of the problem volume. It […]
December 20, 2019 in Tips and Tricks, Ubuntu
Varnish Cache is a web application accelerator that can be used as a proxy to your Apache web server. The open-source software sits in front of your web server to serve web traffic very fast. If you are running multiple servers, Varnish Cache can also be used as a load balancer. Varnish works by caching […]
