deepakkumarnd

#!/usr/bin/python
# tweet-1.0
# @author deepakkumar
# replace the user and passwd with your username and password
# the log will be available in file tweetlog  in the  current directory

import os
import sys
import time

deepakkumarnd

class Roulette
  def method_missing(name, *args)
    person = name.to_s.capitalize
    3.times do
      number = rand(10) + 1
      puts "#{number}..."
    end
    "#{person} got a #{number}"
  end
end

deepakkumarnd

git reset --hard[--soft] commit-id
git commit  # if there is something needs to be changed
git push origin branch-name -f # -f will forcefully rewrite the history on remote branch

deepakkumarnd

# Apache Benchmarking tool - ab
 
ab can simulate a high load on the server.
 
  eg: ab -n 1000 -c 10 -g test_data_1.txt http://www.your-domain.com/index.html
 
commonly used options
 
-n  number of requests. Default is 1 which is useless.
-c  concurrent requests. Default 1

deepakkumarnd

#!/bin/bash
set count = 0
for i in 192.168.150.{1..255}
do
  ping -c2 -t2 $i > /dev/null
  if [ $? -eq 0 ]
  then 
    echo "$i is up"
    set count = $count + 1
  fi

deepakkumarnd

/*
Getip: This program takes a hostname as argument and outputs its ip address
Usage: ./getip <hostname>
  Program Name: getip.c
    Author Deepak Kumar
    Email: deepakkumarnd@gmail.com
*/


#include<stdio.h>

deepakkumarnd

git rev-parse --abbrev-ref HEAD

deepakkumarnd

$ rails new app_name --skip-active-record

Gemfile
gem 'mongoid', github: 'mongoid/mongoid'

$ rails g mongoid:config


Gemfile

deepakkumarnd

#lib/role_constraint.rb

class RoleConstraint
  def initialize(*roles)
    @roles = roles
  end

  def matches?(request)
    @roles.include? request.env['warden'].user.try(:role)
  end

deepakkumarnd

$ tar -zcvf logs.tar.gz *.log

or

$ tar -zcvf logs.tar.gz folder_name

$ tar -zcvf data.tgz *.doc  #gzip
$ tar -zcvf pics.tar.gz *.jpg *.png #gzip
$ tar -jcvf data.tbz2 *.doc #bzip2