ss command in Linux
1. ss command The ss command gives the socket statistics. It gives information about the network connections. ss is a replacement for the netstat command. By default, the ss command…
1. ss command The ss command gives the socket statistics. It gives information about the network connections. ss is a replacement for the netstat command. By default, the ss command…
With Varnish 4.0, the VCL has changed. So an update from Varnish 3 .0 to Varnish 4.0 requires a change in the VCL file, /etc/varnish/default.vcl. As a part of Varnish…
Problem After a Drupal based site came out of the maintenance mode, one particular web page was found to be stuck in the maintenance mode. It showed the message that…
PROBLEM A routine software update on the server running nginx was done. After that the website stopped opening in the browser window and 502 Bad Gateway error along with the…
File Permissions In Linux, each files has nine permission bits. There are three basic permissions, read (r), write (w) and execute (x), for a file. These three permissions are there…
1.0 INTRODUCTION The iproute2 package contains utilities for network and traffic control. The major commands in iproute2 package are the ip command for IPV4 and IPV6 configuration and tc for…
htop is a ncurses based program for viewing processes in a Linux system. htop gives visual indications about processor, memory and swap usage.
1.0 BACKGROUND Software is unique in the sense it is intangible and highly malleable. It is intangible because we can not touch it. The best we can do is to…
vimdiff works on two, three or four files, opens each file in a separate window and highlights the differences between the files. The files can be edited using the vim…
If a website's canonical URL has www, it is desirable, as a good SEO practice, to redirect the non-www URLs to www. That is, if the canonical URL is www.example.com,…