Hi i am Oni Dev, Student of Software Development.
I am a student of Civil engineering in Computing and Informatics from the North Catholic University.
Currently learning Software Development by myself to increase my opportunities.
Author Archives: onidev
CS50 FREE HARVARD University Course.
New To Programming ? Don’t worry , learn from harvard free programming course with game,web ,android , ios specialization.
Alibaba Cloud Centos 8 / RHEL 8 Configuring Postfix Mail Server With SendGrid Relay , SPF .
First Create Account At https://sendgrid.com/
- Next Go to Email Api –> Integration Guide
- Choose SMTP RELAY .
- Enter Your Choosen Api Key than press Create
CentOS 8 / Redhat 8 install wordpress with let’s encrypt ssl https.
Set Current Hostname :
hostnamectl set-hostname example.com
hostnamectl restart systemd-hostnamed
Install EPEL release
yum -y install epel-release
Python Fast Boot Camp For Dummies , Understanding Variable , numbers, tuple , list , dictionary , python data structure.
What is variable ?
Variable is a label for a location in memory . Variable make us easy to understand as programmer.
Python has five standard data types −
- Numbers
- String
- List
- Tuple
- Dictionary
Let’s take a look on each of them.
Continue readingPython Fast Boot Camp , Calling Operating System Command , save result of OS command to variable.
In this bootcamp , we will look into how to get output from system call command and assign it to variable for later processing or output presentation.
We will use subprocess library
Continue readingWordPress How to add color for code using prismjs. Useful for presenting Code with color.
- Download PrismJS from http://prismjs.com/ note: only choose language that you want to use or else your file is bigger and may be will slow your site.
Regular Expression Cheat Sheet for Dummies
| Regex Basics | Description |
|---|---|
| ^ | The start of a string |
| $ | The end of a string |
| . | Wildcard which matches any character, except newline (n). |
| | | Matches a specific character or group of characters on either side (e.g. a|b corresponds to a or b) |
| Used to escape a special character | |
| a | The character “a” |
| ab | The string “ab” |
Python For System Admin Fast BootCamp. Modifying file read and write and using regular expression.
In this tutorial fast boot camp for python for system admin , we will look into how to open , edit file and use regular expression for quickly replace text . useful for system admin.
File Modes in Python
| Mode | Description |
|---|---|
| ‘r’ | This is the default mode. It Opens file for reading. |
| ‘w’ | This Mode Opens file for writing. If file does not exist, it creates a new file. If file exists it truncates the file. |
| ‘x’ | Creates a new file. If file already exists, the operation fails. |
| ‘a’ | Open file in append mode. If file does not exist, it creates a new file. |
| ‘t’ | This is the default mode. It opens in text mode. |
| ‘b’ | This opens in binary mode. |
| ‘+’ | This will open a file for reading and writing (updating) |
Oni Dev 