Chad McCathie chadmccathie

Sed Cheat Sheet

Sed command line options

sed [options] sed-command [input-file]

Option	Description	Example

Originally published in June 2008

When hiring Ruby on Rails programmers, knowing the right questions to ask during an interview was a real challenge for me at first. In 30 minutes or less, it's difficult to get a solid read on a candidate's skill set without looking at code they've previously written. And in the corporate/enterprise world, I often don't have access to their previous work.

To ensure we hired competent ruby developers at my last job, I created a list of 15 ruby questions -- a ruby measuring stick if you will -- to select the cream of the crop that walked through our doors.

What to expect

Candidates will typically give you a range of responses based on their experience and personality. So it's up to you to decide the correctness of their answer.

	#!/bin/bash
	#####################################################
	# Name: Bash CheatSheet for Mac OSX
	#
	# A little overlook of the Bash basics
	#
	# Usage:
	#
	# Author: J. Le Coupanec
	# Date: 2014/11/04

	#!/bin/bash
	# Created Fri Mar 22 2014
	# This is an indirect fork of https://gist.github.com/SeonghoonKim/4378896
	# Most of it was reworked from http://blog.basefarm.com/blog/how-to-install-logstash-with-kibana-interface-on-rhel/
	# This script will download, install and start
	# the following items on CentOS 6.5:
	# OpenJDK 1.7.0
	# cURL
	# ElasticSearch 1.0.1
	# Logstash server 1.4.0

	#!/bin/sh

	# Quick start-stop-daemon example, derived from Debian /etc/init.d/ssh
	set -e

	# Must be a valid filename
	NAME=foo
	PIDFILE=/var/run/$NAME.pid
	#This is the command to be run, give the full pathname
	DAEMON=/usr/local/bin/bar

	#!/bin/bash
	# herein we backup our indexes! this script should run at like 6pm or something, after logstash
	# rotates to a new ES index and theres no new data coming in to the old one. we grab metadatas,
	# compress the data files, create a restore script, and push it all up to S3.
	TODAY=`date +"%Y.%m.%d"`
	INDEXNAME="logstash-$TODAY" # this had better match the index name in ES
	INDEXDIR="/usr/local/elasticsearch/data/logstash/nodes/0/indices/"
	BACKUPCMD="/usr/local/backupTools/s3cmd --config=/usr/local/backupTools/s3cfg put"
	BACKUPDIR="/mnt/es-backups/"
	YEARMONTH=`date +"%Y-%m"`