zacstewart

import os
import numpy
from pandas import DataFrame
from sklearn.feature_extraction.text import CountVectorizer
from sklearn.naive_bayes import MultinomialNB
from sklearn.pipeline import Pipeline
from sklearn.cross_validation import KFold
from sklearn.metrics import confusion_matrix, f1_score

NEWLINE = '\n'

ruckus

** Find commmonly accessed tables and their use of indexes:

SELECT relname,seq_tup_read,idx_tup_fetch,cast(idx_tup_fetch AS numeric) / (idx_tup_fetch + seq_tup_read) AS idx_tup_pct FROM pg_stat_user_tables WHERE (idx_tup_fetch + seq_tup_read)>0 ORDER BY idx_tup_pct;

Returns output like:

       relname        | seq_tup_read | idx_tup_fetch |      idx_tup_pct       
----------------------+--------------+---------------+------------------------
 schema_migrations    |          817 |             0 | 0.00000000000000000000
 user_device_photos   |          349 |             0 | 0.00000000000000000000

jdkanani

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bobuk

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 
# Video of this screencast: https://vimeo.com/57296525
# 
# 
from __future__ import print_function, division, absolute_import
from PIL import Image as pImage
import numpy

drakmail

# Check for an interactive session                                                                                                                   
[ -z "$PS1" ] && return                                                                                                                              

alias ls='ls --color=auto'                                                                                                                           

PS1='[\u@\h \W]\$ '                                                                                                                                  

bash_prompt() {                                                                                                                                      
    local NONE="\[\033[0m\]"    # unsets color to term's fg color                                                                                    
                                                                                                                         

obscurerichard

slow

This bash script offers quick shortcuts to simulate slower network connections. It is useful when you need to simulate a wireless network on a Linux network server, especially when you are using a virtual machine guest on your local machine or in the cloud.

slow 3G                   # Slow network on default eth0 down to 3G wireless speeds
slow reset                # Reset connection for default eth0 to normal
slow vsat --latency=500ms # Simulate satellite internet  with a high latency
slow dsl -b 1mbps         # Simulate DSL with a slower speed than the default

slow modem-56k -d eth0 # Simulate a 56k modem on the eth1 device. eth0 is unchanged.

dsc

#!/bin/bash

#/ jc -- jconsole via ssh proxy
#/ 
#/ Usage:     jc [options] HOST JMX_PORT [PROXY_PORT=JMX_PORT] [JMX_HOST=HOST]
#/ 
#/ Starts a SOCKS proxy via ssh to connect to a
#/ JVM running on a remote and protected machine.
#/ 
#/ Arguments:

bzerangue

How To: Enable TRIM with Non-Apple SSD

The guide breaks the process down into three steps, all performed via copying and pasting the code snippets through the terminal window. To launch a terminal window, open the Utilities folder inside the Applications folder and select terminal.

The first step makes a backup of the original IOAHCIBlockStorage file called IOAHCIBlockStorage.original. You will be prompted to enter in your system password when using the "sudo" command, since you are modifying system files. Copy and paste the code into the terminal window, a successful or uneventful response is a new blank terminal line.

sudo cp /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage /System/Library/Extensions/IOAHCIFamily.kext/Contents/PlugIns/IOAHCIBlockStorage.kext/Contents/MacOS/IOAHCIBlockStorage.original

Next the code patches the IOAHCIBlockStorage file, removing the requirements that the SSD be made by Apple. Copy and paste t

avoine

#!/usr/bin/env python
#
# Copyright 2012 Patrick Hetu <patrick.hetu@gmail.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,

gingerlime

#!/bin/bash

usage()
{
cat << EOF
usage: $0 options

This script set ownership for all table, sequence and views for a given database

Credit: Based on http://stackoverflow.com/a/2686185/305019 by Alex Soto