Category: Scripts

I’ve been working on a Python script to help me parse (and make sense) of all the bookmarks I consume on a daily basis. I was interested in just how many I accumulate daily, monthly, and yearly. It turns out, a lot.

After learning about Smith numbers today I cooked up this script fairly quickly. There are many places where it could be optimized and cleaned up but that wasn’t really the point – I just needed something that was accurate, and I’m pretty sure this is.

It also helped me to learn about the ulimit command after running it with a HUGE number that had taken up about 7GB of swap before I had to kill the process remotely via SSH…

#!/usr/bin/python
# smith number detector - TWS 1-12-13

def detectSmith(num):
  if(sumFactors(num) == sumDigits(num)):
    return True
  else:
    return False

# calculate the sum of the factors
def sumFactors(num):
  factorList = factors(num)
  sum = 0

  for factor in factorList:
    if factor > 9:
      # if a number (base ten) has multiple digits it has to be broken down
      sum = sum + sumDigits(factor)
    else:
      sum = sum + factor

  return sum

# sum the digits in a number with two or more
def sumDigits(num):
  sum = 0  

  if num > 9:
    while num > 9:
      sum = sum + num % 10
      num = num / 10
    sum = sum + num
    return sum
  else:
    # should never reach this
    return num

def factors(num):
  primeFactorList = []

  factor = lowestPrimeFactor(num)
  currentNum = num

  while factor != -1:
    primeFactorList.append(factor)
    currentNum = currentNum / factor
    factor = lowestPrimeFactor(currentNum)

  if(currentNum != num):
    # preventing returning the number passed in
    primeFactorList.append(currentNum)

  return primeFactorList

def lowestPrimeFactor(num):
  for x in range(2, (num / 2) + 1):
    if(num % x == 0):
      return x
  return -1

for number in range(1, 1000):
  if(detectSmith(number)):
    print "The number", number, "is a Smith number."

A simple script I use for work to search the contents of files. It just wraps up ‘find’ and ‘grep’ to recursively search and display the location of the file.

#!/bin/bash
# Tanner Stokes - 8-23-12
# Search contents of files

if [ -z "$1" ] || [ -z "$2" ]
then
echo "Usage: csearch \"filetype\" \"content\""
echo "ex: csearch \"*.php\" \"my_function()\""
exit 1
fi

find . -name "$1" -exec grep -Hn "$2" {} \;

Herp Derp now has a dedicated page!

Here’s a little Python script I cooked up for work. We often have to change the custom LCD string on boxes if the machine is given a new name. Before, we’d have to restart a machine to access the DRAC configuration to change the name. With this script, all you have to do is enable IPMI through the DRAC remotely (if it isn’t already enabled), and know the correct credentials.

If the LCD isn’t set to view the custom string, you should be able to change it from the front of the box. As you can see, the function that I have commented out at the bottom is supposed to do this for you, but I never got it to work.

2023 update: Check out Pierre’s solution which properly sets the mode!

You may have to change ‘/usr/sbin/ipmitool’ to your appropriate path.

#!/usr/bin/python
import os

# Tanner Stokes - tannr.com - 2-26-10
# This script changes the LCD user string on Dell machines that conform to IPMI 2.0

sp_hostname = raw_input ("\nEnter DNS or IP of SP: ");
user_string = raw_input("Enter LCD string: ")

hex_string = ""

for x in user_string:
 	hex_string += hex(ord(x))
	# add space between each hex output
	hex_string += " "

print '\nTrying to change LCD string on '+sp_hostname+'...'

return_val = os.system('/usr/sbin/ipmitool -H '+sp_hostname+' -I lan -U root raw 0x6 0x58 193 0 0 '+str(len(user_string))+' '+hex_string)

if (return_val == 0):
	print 'LCD string changed successfully.\n'
else:
	print '\nNon-zero return value, something went wrong.'
	print 'Make sure IPMI is enabled on the remote host and the DNS or IP is correct.\n'

# this function supposedly sets the user string to show on the LCD, but never got it to work
# this can be changed from the front of the box anyway
# os.system('/usr/sbin/ipmitool -H '+sp_dns+' -I lan -U root raw 0x6 0x58 194 0')