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 learn the Python programming language from scratch

This is a detailed tutorial designed for coders who need to learn the Python programming language from scratch. In this course, I’ll try to highlight many of Python’s capabilities and features. Python is an easy-to-learn programming language. Your First Program >>> print “Hello World” Hello World >>>   On UNIX: #!/usr/local/bin/python print “Hello World”   Expressions Expressions …

What is the difference between grep, pgrep, egrep, fgrep?

grep grep is an acronym that stands for “Global Regular Expressions Print”. grep is a program which scans a specified file or files line by line, returning lines that contain a pattern. A pattern is an expression that specifies a set of strings by interpreting characters as meta-characters. For example the asterisk meta character (*) …

Vagrant Issue on Linux Mint

i have some issue with  running vagrant, ]# vagrant init ubuntu/trusty64 A `Vagrantfile` has been placed in this directory. You are now ready to `vagrant up` your first virtual environment! Please read the comments in the Vagrantfile as well as documentation on `vagrantup.com` for more information on using Vagrant. adi.subekti@ops-desktop /vm/vagrant/trusty64 $ vagrant up Bringing …

Vagrant MacOs Installation

Vagrant Create and configure lightweight, reproducible, and portable development environments. Vagrant is an amazing tool for managing virtual machines via a simple to use command line interface. Before you start In order to simplify the installation process you should install homebrew-cask which provides a friendly homebrew-style CLI workflow for the administration of Mac applications distributed as binaries. …

Convert qcow2 to raw image and raw to qcow2 image

qemu-img is a QEMU disk image utility, which allows us to create, convert and modify images offline. It can handle all image formats supported by QEMU (including qcow2 and raw image format). Installing qemu-img: ]# yum install qemu-img Converting qcow2 image to raw image format using qemu-img: ]# qemu-img convert -f qcow2 -O raw image.qcow2 image.img Converting raw image to qcow2 image format using qemu-img: ]# qemu-img convert -f raw -O qcow2 …

How to remove subscription notification from Proxmox VE 5

This guide will show you how to easily remove the “No Valid Subscription” nag from Proxmox VE 5.* that pops up every time you log in. Introduction and Disclaimer In order to apply this “hack” to a Proxmox installation, you require SSH or console access with administrative/sudo privileges. This guide assumes that you have the …

Raspberry pi3 Installation

i got new stuff. its very new for me, i’m so excited to have it. its called “Raspberry”.. finally i have it one my new raspberry pi3. i was wondering what i must do with this small device. its still blank. but at least i have to install operating system on it. so i have …

Running vino-server with gdm

Sibuk banged ternyata hari ini. dari bikin Flow Proses sampai dengan konfigure Server. ya sudah lah. Namanya juga kerja ditempate orang. Jadi harus ngikut dengan keadaan. Ok. Back to topic. pada kali ini saya akan menjelas tentang membuat bagaimana sebuah server dengan GUI bisa diremote dengan vnc meskipun pada saat sebelum login. seperti yang di …

Centos to Elastix Repo Internal

Hari ini pagi-pagi sudah di bikin sibuk dengan pekerjaan. ada sebuah project baru yang diharapkan mampu menggunakan teknologi voip. project ini dipergunakan untuk Call Center sebuah perusahaan. Untuk sebuah Call Center dengan hanya 3-4 Desk Petugas. Biasanya aku menggunakan server yang terpisah antara database dan voip server nya. itupun aku hanya menggunakan komputer setara Dual …