qa1

sudo swapoff -a
sudo dd if=/dev/zero of=/swapfile bs=1G count=8
sudo mkswap /swapfile
sudo swapon /swapfile
grep Swap /proc/meminfo

qa1

#!/bin/bash
tar -zcf /backups/backup-$(date +%Y%m%d).tar.gz --absolute-names /data
rm -f /backups/backup-$(date -d 'now - 7 days' +%Y%m%d).tar.gz

qa1

cd $GOPATH
mkdir -p src/github.com/hello
cd src/github.com/hello
git clone https://github.com/hello/example.git
cd example
go install

qa1

// delete all origin branch that deleted from origin and stay in your local
git fetch -p
// chekout to main brach to prevent delete it from local
git checkout master
// delete all local branch 
git branch | xargs git branch -d
// delete all origin branch that don't deleted from origin and stay in your local
git branch | xargs git branch -D

// now you have master branch in local

qa1

/etc/sysctl.conf
vm.dirty_background_ratio = 5
vm.dirty_ratio = 10

* run
sudo sysctl -p

qa1

git config --global --add alias.permission-reset '!git diff -p -R --no-color | grep -E "^(diff|(old|new) mode)" --color=never | git apply'
// use like git permission-reset

qa1

var exec = require('child_process').exec;

var targetBranch = process.argv[2] || "develop"
var title = process.argv[3] || "initial task"
var description = process.argv[4] || "initial task"

exec("git push origin HEAD \
        -o merge_request.create \
        -o merge_request.remove_source_branch \
	-o merge_request.title=" + title + " \

qa1

Regex 
==========================================================

GET /_search
{
    "query": {
        "regexp": {
            "user": {
                "value": "k.*y"
            }

qa1

#!/bin/bash

echo "Please, enter your username, it will be added to 'sudo' and 'docker' groups during the process."
read USERNAME

if [ -z "$USERNAME" ] ; then
	echo "Exiting... Done."
	exit
else
	echo "Adding user to 'sudo' group..."

qa1

* change drive name 
Set-Partition -DriveLetter D -NewDriveLetter E
* get time of one command like get-process
Measure-Command {Get-Procees}
* find exe (or any) format in one directory
Get-childitem "C:\Program Files" -recurse | Where-Object {$_.extension -eq ".exe"}

* find powershell module install path like PSReadLine
(Get-Module -Name PSReadLine).Path