Chris Rittelmeyer crittelmeyer

Linux tools to know

Built-in Mac OS tools

ls - list directory contents
wc - word, line, character, and byte count
cp - copy files
mv - move files
rm - remove directory entries
chmod - change file modes or Access Control Lists
chown - change file owner and group

Differences between grep, pgrep, egrep, and fgrep (Linux):

grep

grep is an acronym that stands for "Global Regular Expressions Print". grep is a program which scans a specified file or files line by line, returning lines that contain a pattern. A pattern is an expression that specifies a set of strings by interpreting characters as meta-characters. For example the asterisk meta character (*) is interpreted as meaning "zero or more of the preceding element". This enables users to type a short series of characters and meta characters into a grep command to have the computer show us what lines in which files match.

The standard grep command looks like:

grep '' grep prints the search results to the screen (stdout) and returns the following exit values:

0 A match was found.

tmux/tmuxinator cheatsheet

tmux

As configured in my dotfiles, here and here.

Command line

$ tmux                           -> start new
$ tmux new -s myname             -> start new w/session name
$ tmux a  #  (or at, or attach)  -> attach
$ tmux a -t myname               -> attach to named

	#!/usr/bin/python
	# Adapted from http://kutuma.blogspot.com/2007/08/sending-emails-via-gmail-with-python.html

	import getpass
	import smtplib
	from email.MIMEMultipart import MIMEMultipart
	from email.MIMEBase import MIMEBase
	from email.MIMEText import MIMEText
	from email import Encoders
	import os

	#!/bin/bash
	# Let it Rain!
	# Copyright (C) 2011, 2013 by Yu-Jie Lin
	#
	# Permission is hereby granted, free of charge, to any person obtaining a copy
	# of this software and associated documentation files (the "Software"), to deal
	# in the Software without restriction, including without limitation the rights
	# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	# copies of the Software, and to permit persons to whom the Software is
	# furnished to do so, subject to the following conditions:

	_
	_._ _..._ .-', _.._(`))
	'-. ` ' /-._.-' ',/
	) \ '.
	/ _ _ \| \
	\| a a / \|
	\ .-. ;
	'-('' ).-' ,' ;
	'-; \| .'
	\ \ /

	#!/bin/bash -e

	osascript -e 'tell application "Terminal" to activate' -e 'tell application "System Events" to tell process "Terminal" to keystroke "t" using command down'

	#!/bin/bash -e

	git status -s \| grep -e "^??" \| cut -c 4- >> .gitignore

	crontab -e
	/30 * * * say -v whisper "I am watching you"