Vladimir Melnik

Just another WordPress website

Maintenance works without drama: how to inform visitors when the server has been shut down

Sometimes you need to shut some web-services down for a while to do some maintenance works. Of course, you have warned all users about the scheduled downtime period, but what […]

How to check some host by arping without looking up the corresponding network interface?

Sometimes you have to check if some host replies on ARP “who-has” requests instead of simply pinging it. You probably need it when the host has its firewall configured to […]

How to restart some service when server’s load average goes high as fuck

This post’s name and script’s comments are pretty descriptive, right? 🙂

Of course, you can get all further updates of this script from GitHub: https://gist.github.com/melnik13/04225e4e60a8d66f9ab6. Now you can sleep […]

How to run commands on different servers with different login credentials

Wouldn’t it be lovely if you could run some command on a bunch of servers? Of course, you can! Most of us would do something like that:

But what […]

How to monitor which files are growing faster than other ones?

If you ever needed a tool to get to know which files are growing faster than other ones, you probably will be quite satisfied with this simple bash-script.

Simply […]