djburdick

require 'open-uri'
require 'nokogiri'

def scrape
    29.times do |i|
      page = i + 1

      url = "http://djcode.posterous.com/?page=#{page}"

      doc = Nokogiri::HTML(open(url))

djburdick

 
/etc/sudoers 

 
username ALL=(ALL) ALL 

#
                        Open this file: 

djburdick

alter table  change field_name field_name int(11); 

djburdick

cat /etc/passwd
cat /etc/passwd | grep home

djburdick

 /etc/php.ini 
#
                        PHP config file is here usually: 

djburdick

date -s 12/8/2009 12:58:30

djburdick

 
us = user cpu 
sy = system cpu 
id = idle CPU (high is good) 
wa = I/O wait (either RAM or disk. High here means prob not a cpu issue) 

Mem: free + Swap cached = actual free RAM
iostat
#
                        Load average is the last: 1, 5 and 15 minutes. 

djburdick

iostat 
tps: transaction per second 
Blk_read/s: blocks read per second 
Blk_read: total block read 
Blk_wrtn: total blocks written 

iotop
#
                        Use iostat to check for high disk bound load. 

djburdick

ssh-keygen -t dsa
scp id_dsa.pub username@example.com:~/.ssh/authorized_keys2
ssh-add
exec ssh-agent bash

djburdick

 $ find / -type f -name filename