rohithreddy

chmod +x /path_to_script

rohithreddy

## # Run /bin/false every minute year round
*     *     *     *     *        /bin/false
  
## # Run /bin/false at 1:35 on the mon,tue,wed and the 4th of every month
35    1     4     *     mon-wed  /bin/false
  
## # Run /bin/true at 22:25 on the 2nd of March
25    22    2     3     *        /bin/true
  
## # Run /bin/false at 2:00 every Monday, Wednesday and Friday

rohithreddy

#! /bin/bash
WALLPAPERS="/path/to/wallpapers/directory"
ALIST=( `/bin/ls -w1 $WALLPAPERS` )
RANGE=${#ALIST[@]}
let "number = $RANDOM"
let LASTNUM="`/bin/cat $WALLPAPERS/.last` + $number"
let "number = $LASTNUM % $RANGE"
echo $number > $WALLPAPERS/.last
feh --bg-center  $WALLPAPERS/${ALIST[$number]}

rohithreddy

Instructions to run the programs 

Download the gist

Run hiphop.py by using command 
$> python hiphop.py

Run freqcount.oy  by passing the file name containing numbers as an argument for script. Note : place the FILE with numbers in same directory as freqcount.py or specify full path
$> python freqcount.py numbers

rohithreddy

import sys
'''sum of digits in a number'''
print(sum(int(i) for i in sys.argv[1]))

rohithreddy

Comprehensions in Python the Jedi way

Beautiful is better than ugly. Explicit is better than implicit.

-- The Zen of Python

I frequently deal with collections of things in the programs I write. Collections of droids, jedis, planets, lightsabers, starfighters, etc. When programming in Python, these collections of things are usually represented as lists, sets and dictionaries. Oftentimes, what I want to do with collections is to transform them in various ways. Comprehensions is a powerful syntax for doing just that. I use them extensively, and it's one of the things that keep me coming back to Python. Let me show you a few examples of the incredible usefulness of comprehensions.

All of the tasks presented in the examples can be accomplished with the extensive standard library available in Python. These solutions would arguably be more terse and efficient in some cases. I don't have anything against the standard library. To me there is a certain

rohithreddy

Setup Mesos-DNS

Scripts for setting up

sudo mkdir /etc/mesos-dns
sudo vi /etc/mesos-dns/config.json

rohithreddy

import logging
import uuid
import time

from mesos.interface import Scheduler
from mesos.native import MesosSchedulerDriver
from mesos.interface import mesos_pb2

logging.basicConfig(level=logging.INFO)

rohithreddy

DROP TABLE if exists d_date;

CREATE TABLE d_date
(
  date_dim_id              INT NOT NULL,
  date_actual              DATE NOT NULL,
  epoch                    BIGINT NOT NULL,
  day_suffix               VARCHAR(4) NOT NULL,
  day_name                 VARCHAR(9) NOT NULL,
  day_of_week              INT NOT NULL,

rohithreddy

<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
    <match>
        <edit mode="prepend" name="family"><string>Noto Sans</string></edit>
    </match>
    <match target="pattern">
        <test qual="any" name="family"><string>serif</string></test>
        <edit name="family" mode="assign" binding="same"><string>Noto Serif</string></edit>
    </match>