AidasK

Real developers are not used to clicking, it's allways easier to write a script to do it for you.

runlevel5

There are many ways to parse in variable into the nginx config file. Some uses set_by_lua which is offered by lua-nginx-module. Some use envstubst to populate varilabes into a template file.

Today I am going to show you how to do that with njs the JS scripting engine for nginx.

## /etc/nginx/fetch_env.js
function fetch_upstream_host(r) {
 return process.env.UPSTREAM_HOST;

MichaelWhi

#!/bin/bash
if [ $1 = "1" ]; then
  curl -XPOST -H "Content-type: application/json" -d '{"method":"passthrough", 
  "params": {"deviceId": "DEVICEID",
  "requestData": "{\"system\":{\"set_relay_state\":{\"state\":1}}}" }
  }' 'https://eu-wap.tplinkcloud.com?token=TOKEN'
else
  curl -XPOST -H "Content-type: application/json" -d '{"method":"passthrough",
"params": {"deviceId": "DEVICEID",
"requestData": "{\"system\":{\"set_relay_state\":{\"state\":0}}}" }

slavafomin

Here's how you could create custom error classes in Node.js using latest ES6 / ES2015 syntax.

I've tried to make it as lean and unobtrusive as possible.

Defining our own base class for errors

errors/AppError.js

drmalex07

README

A docker entrypoint must ensure that after any initialization (environmanet setup etc.) the main docker process must remain at PID 1. This is usually accomplished by using exec as the last command (which actually replaces the current process).

See also: https://docs.docker.com/engine/reference/builder/#entrypoint

An example entrypoint.sh:

tott

/**
 * Check if a given ip is in a network
 * @param  string $ip    IP to check in IPV4 format eg. 127.0.0.1
 * @param  string $range IP/CIDR netmask eg. 127.0.0.0/24, also 127.0.0.1 is accepted and /32 assumed
 * @return boolean true if the ip is in this range / false if not.
 */
function ip_in_range( $ip, $range ) {
	if ( strpos( $range, '/' ) == false ) {
		$range .= '/32';
	}

rgreenjr

-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query 
FROM pg_stat_activity 
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%' 
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query 
FROM pg_stat_activity 
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%' 

kfox

var net = require("net");

process.on("uncaughtException", function(error) {
  console.error(error);
});

if (process.argv.length != 5) {
  console.log("usage: %s <localport> <remotehost> <remoteport>", process.argv[1]);
  process.exit();
}

dansimau

#!/bin/bash
#
# Do a ping and output results as CSV.
#
# [email protected]
# 2011-12-23
#

if [ $# -lt 1 ]; then
	echo "Usage: $0 [--add-timestamp] <ping host>"