Sal salDb

My Arch setup

Pre-installation

Make sure EFI partition is of 550 MB
Microsoft Reserved Partition can be deleted (is created to reserve a portion of disk space for possible subsequent use by a Windows operating system installed on a separate partition)
Turn encryption off when moving windows main partition
Keep the windows' bitlocker recovery key with you
Use AOMEI partition assistant to manage partitions on windows
Disable secure boot
Disable Intel RAID and select AHCI

Installation

Arch Linux tweaks

This is a collection of the tweaks and modification I've made to my Arch Linux installation over the months. These may be applicable to other distros, but please check first before doing anything. I also included Arch Wiki references for all the procedures I mentioned. My recommendation is not to blindly follow this gist but to always check with the Arch Linux wiki first. Things move fast and by the time you're reading this my gist may be out of date. Lastly, the golden rule: never execute a command you don't understand.

Installing the KDE Plasma desktop

My current DE of choice is KDE's Plasma. I find it just about perfect.

There are various ways to install it on Arch. The most popular one is to install plasma and plasma-applications, but I don't like doing that because it comes with too many programs I'll never use. I, instead, install the base plasma group, remove the few extra packages that come with it, then I finish off by installing a few KDE apps that don't come with th

Important: I'm writing this when the last version of macOS (and the one I have installed) is Mojave. There is already a script which installs Mojave in a virtual machine here https://github.com/img2tab/okiomov. But if you are curios how to do everything manually to install High Sierra, then this guide may be useful.

After reading a few articles I ended up with these steps:

On macOS, download the High Sierra installer (even if you have Mojave installed): https://itunes.apple.com/us/app/macos-high-sierra/id1246284741?ls=1&mt=12
If the High Sierra Installer starts, quit it.
Open "Disk Utility".
Click on "File" > "New Image" > "Blank image...". Or just press cmd+N.

Easy instructions to get QEMU/KVM and virt-manager up and running on Arch

Make sure your cpu support kvm with below command:

 grep -E "(vmx|svm)" --color=always /proc/cpuinfo

Make sure BIOS have enable “Virtualization Technology”.
User access to /dev/kvm so add your account into kvm(78) group:

Ranger Cheatsheet

General

Shortcut	Description
`ranger`	Start Ranger
`Q`	Quit Ranger
`R`	Reload current directory
`?`	Ranger Manpages / Shortcuts

So the anyconnect client prevents forward of traffic from a VM to the VPN, which means virtual machines and docker containers which rely upon NAT won't work. OpenConnect allows you to get around this as it doesn't enforce ipfw rules upon you.

OpenConnect is a command-line client for Cisco's AnyConnect SSL VPN.

Here's how to get it set up on Mac OS X:

OpenConnect can be installed via homebrew:
```
 brew update
```

brew install openconnect

To limit a CPU to a certain C-state, you can pass the processor.max_cstate=X option in the kernel line of /boot/grub/grub.conf.

Here we limit the system to only C-State 1:

    kernel /vmlinuz-2.6.18-371.1.2.el5 ... processor.max_cstate=1

On some systems, the kernel can override the BIOS setting, and the parameter intel_idle.max_cstate=0 may be required to ensure sleep states are not entered:

Repeat string N times without loop in Java

package javaapplication1;
public class JavaApplication1 {
    /**
     * Repeat string <b>str</b> <b>times</b> time.
     * @param str string to repeat
     * @param times repeat str times time
     * @return generated string
 */

	version: '4.5'
	services:

	# GITLAB
	gitlab-web:
	image: 'gitlab/gitlab-ce:latest'
	restart: always
	container_name: gitlab-web
	hostname: '192.168.0.14'
	environment:

	#!/usr/bin/env python

	# Haversine formula example in Python
	# Author: Wayne Dyck

	import math

	def distance(origin, destination):
	lat1, lon1 = origin
	lat2, lon2 = destination