bmcculley

chmod cheat sheet

    PERMISSION      COMMAND
    
     U   G   W
     _____________________________________
    |rwx rwx rwx     chmod 777 <filename> |
    |_____________________________________|
    |rwx rwx r-x     chmod 775 <filename> |
    |_____________________________________|

bmcculley

#!/bin/bash
if [ -e /usr/bin/python ]
then
    echo "Python found!"
else
    echo "Python missing!"
fi

bmcculley

DELETE FROM `table`  
WHERE id IN (SELECT *
              FROM (SELECT id FROM `table` 
              GROUP BY column HAVING (COUNT(*) > 1)
            ) AS A
);

nicolaiarocci

<?xml version="1.0" encoding="UTF-8"?>
<SetupPrereq>
	<conditions>
		<condition Type="16" Comparison="2" Path="[WindowsFolder]Microsoft.NET\Framework\v4.0.30319" FileName="mscorlib.dll" ReturnValue="4.0.30319.233"></condition>
		<condition Type="1" Comparison="2" Path="HKEY_LOCAL_MACHINE\SOFTWARE\wow6432node\Microsoft\Updates\Microsoft .NET Framework 4 Extended\KB2468871\" FileName="" ReturnValue=""></condition>
		<condition Type="1" Comparison="2" Path="HKEY_LOCAL_MACHINE\SOFTWARE\wow6432node\Microsoft\Updates\Microsoft .NET Framework 4 Client Profile\KB2468871\" FileName="" ReturnValue=""></condition>
	</conditions>
	<operatingsystemconditions>
		<operatingsystemcondition MajorVersion="5" MinorVersion="2" PlatformId="2" CSDVersion="" Bits="4" ProductType="1" ServicePackMajorMin="3"></operatingsystemcondition>
		<operatingsystemcondition MajorVersion="5" MinorVersion="2" PlatformId="2" CSDVersion="" Bits="4" ProductType="2|3" ServicePackMajorMin="2"></operatingsystemcondition>

ik5

int led = 13;
int in = 0;

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  if (Serial.available() == 0) {

bmcculley

find ./ -type f -exec sed -i 's/apple/orange/g' {} \;

bmcculley

<?php

if (version_compare(phpversion(), '5.3.10', '<')) {
    // php version isn't high enough
    echo 'version too low.';
}
else {
	echo 'good to go.';
}

keningle

if (function_exists('function_name')) { 
  function_name() 
}

ik5

    def human_size(size, si = false)
      return '0' if size == 0
      base = si ? 1000 : 1024
      bytes = %w(B KB MB GB TB PB EB ZB YB)
      
      cnt  = Math.log(size, base).floor
      size = size / (base * 1.0) ** cnt
      
      fmt  = size < 10 ? '%.1f %s' : '%i %s'
      sprintf(fmt, size, bytes[cnt])

swallentin

<?php
echo 'Current PHP version: ' . phpversion();