Raven RavenZZ

CentOS 防火墙

Centos 7 firewall 命令：

查看已经开放的端口：

firewall-cmd --list-ports

Postgres Cheatsheet

This is a collection of the most common commands I run while administering Postgres databases. The variables shown between the open and closed tags, "<" and ">", should be replaced with a name you choose. Postgres has multiple shortcut functions, starting with a forward slash, "". Any SQL command that is not a shortcut, must end with a semicolon, ";". You can use the keyboard UP and DOWN keys to scroll the history of previous commands you've run.

Setup

installation, Ubuntu

http://www.postgresql.org/download/linux/ubuntu/ https://help.ubuntu.com/community/PostgreSQL

Docker Registries & Repositories

Login to a Registry

docker login
docker login localhost:8080

	echo $@
	if [[ $@ != "monitor" ]] ; then # 没有monitor参数
	echo "执行cp"
	else
	echo "不执行"
	fi

	// Binary Search in Golang
	package main
	import "fmt"

	func binarySearch(needle int, haystack []int) bool {

	low := 0
	high := len(haystack) - 1

	for low <= high{

	// Linear Search in Golang
	package main

	import "fmt"

	func linearsearch(datalist []int, key int) bool {
	for _, item := range datalist {
	if item == key {
	return true
	}

	// Interpolation Search in Golang
	package main
	import "fmt"

	func interpolationSearch(array []int, key int) int {

	min, max := array[0], array[len(array)-1]

	low, high := 0, len(array)-1

	package main

	import (
	"fmt"
	"log"
	"regexp"
	)

	func main() {


	#user nobody;
	worker_processes 1;

	#error_log logs/error.log;
	#error_log logs/error.log notice;
	#error_log logs/error.log info;

	#pid logs/nginx.pid;

	http {
	log_format bodylog '$remote_addr - $remote_user [$time_local] '
	'"$request" $status $body_bytes_sent '
	'"$http_referer" "$http_user_agent" $request_time '
	'<"$request_body" >"$resp_body"';

	lua_need_request_body on;

	set $resp_body "";
	body_filter_by_lua '