bgazui - An SRE/DevOps storyboard (Page 8)

Linux

Find which process is using a specific port

If you need to know/find which process is using a specific port on your system, you can use some default tools for troubleshooting: * netstat * lsof WARNING : For the use of these tools, you will need root rights (or sudo rights will be efficient) First, with netstat you can use

Linux

Add a function in shell on Linux (make dmesg timestamps human readable)

You want to add a specific function on your shell which is not available in standard functions and you would like to be able to call it anywhere you want without the need to specify the script location? That's quite easy to do, with some simple tricks ;) ! We

Linux

Create an interactive command-line menu using Python

It can be necessary to create a simple interactive menu on CLI (Command-Line Interface) using Python to allow users to make some choices while executing a script/program. As there is no standard library for this in Python, you will have to adapt it by yourself. Here is a

Google Agenda

Create a repeating event on last day of each month on Google Calendar

There is no easy way to make an event repeating on last day of each month with Google Calendar. So here is a simple trick to pass through this and get an event repeating on the last day of each month. Open a simple text editor with a new file

Linux

Testing SMTP server using telnet (whether with authentication or not)

You can need to perform testing with your SMTP server and see if you are able to send mail with it. You have your domain name, and you want to check if mail server is answering properly? 1. Check the mail server with DNS entries We first need to find

Google Agenda

Unsubscribe from birthdays calendar on Google Calendar

To unsubscribe from the Birthday's calendar, here is the process: 1. Click on the arrow in left panel besides Other calendars and choose Browser interesting calendards 2. Go to the More tab 3. On line Birthdays, click on Unsubscribe at the right of the ligne

Linux

Testing an ISO or an USB bootable drive with QEMU

If you want to test an ISO image or a bootable USB drive you just prepared, you can do it very easily thanks to QEMU with a simple command-line. Obviously, you will need to install the QEMU package first so you can use it. For example on a Debian-

Linux

NMap main command-lines

Nmap ("Network Mapper") is a free and open source (license) utility for network discovery and security auditing. Many systems and network administrators also find it useful for tasks such as network inventory, managing service upgrade schedules, and monitoring host or service uptime. Nmap uses raw IP packets in

Linux

Find main DNS servers for a given domain name

It can be useful to find the main DNS servers for a domain name and see if you can query it directly to ensure the value you got from your DNS server is the most recent. For this, you can simply use nslookup tools, which is available by default on

Python

Use FTPS (SSL/TLS) with Python 2.6

By default, Python 2.6 does not permit to open an FTPS connection (using SSL/TLS) and restricts the use of non secure protocol FTP. However, it's possible to get around this lack by using the FTP library available since version 2.7, which is fully compatible and

Google Agenda

Customize Google Agenda display (URL / HTML integration)

As you certainly know, it's possible to easily integrate a Google Agenda to your website by using the steps described in Google support: https://support.google.com/calendar/answer/41207&hl=en When you are integrating the agenda, several parameters can be configured directly using the graphical

Google Chrome

Chrome tabs and bookmarks bar became big (with Chrome 37)

With Google Chrome 37, depending on your screen resolution, it's possible that yout get a tabs bar and a bookmarks bar much bigger than usually. No worries, there is an easy and quick workaround for this! For that, just follow next steps: * Perform a right click on your