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Learning Python Part 1

Best way to learn is to do. First idea was a Rock+Paper+Scissor Machine.

This probably is not the most effect way but it works…

import random

def get_var_value(filename="varstore0.dat"):
with open(filename, "a+") as f:
val = int(f.read() or 0) + 1
f.seek(0)
f.truncate()
f.write(str(val))
return val

foo = ['Rock', 'Paper', 'Scissor']
foo2 = ['Rock', 'Paper', 'Scissor']

select1 = (random.choice(foo))
select2 = (random.choice(foo2))

print "Player 1 %s" % select1
print "Player 2 %s" % select2

if select1 == select2:
print("Tie")
tie_counter = get_var_value("tie.dat")
print("{} Ties.\n".format(tie_counter))

if select1 == 'Rock' and select2 == 'Paper':
print ("Player 2 Wins - Paper Wins")
p2_counter = get_var_value("p2.dat")
print("Player 2 has won {} Times.\n".format(p2_counter))

if select1 == 'Paper' and select2 == 'Rock':
print ("Player 1 Wins - Paper Wins")
p1_counter = get_var_value("p1.dat")
print("Player 1 has won {} Times.\n".format(p1_counter))

if select1 == 'Rock' and select2 == 'Scissor':
print ("Player 1 Wins - Rock Wins")
p1_counter = get_var_value("p1.dat")
print("Player 1 has won {} Times.\n".format(p1_counter))

if select1 == 'Scissor' and select2 == 'Rock':
print ("Player 2 Wins - Rock Wins")
p2_counter = get_var_value("p2.dat")
print("Player 2 has won {} Times.\n".format(p2_counter))

if select1 == 'Paper' and select2 == 'Scissor':
print ("Player 2 Wins - Scissor Wins")
p2_counter = get_var_value("p2.dat")
print("Player 2 has won {} Times.\n".format(p2_counter))

if select1 == 'Scissor' and select2 == 'Paper':
print ("Player 1 Wins - Scissor Wins")
p1_counter = get_var_value("p1.dat")
print("Player 1 has won {} Times.\n".format(p1_counter))

Let the script fun for a few hours.

Tie 19006 Ties.
Player 1 has won 19052 Times
Player 2 has won 19161 Times.

HP A5500 Bridge-Aggregation LACP Configuration

Switch 1

Create Bridge-Aggregation LACP Trunk

interface Bridge-Aggregation100
link-aggregation mode dynamic

Apply port configuration.

interface GigabitEthernet1/0/49
port link-aggregation group 100
#
interface GigabitEthernet1/0/50
port link-aggregation group 100
#
interface GigabitEthernet1/0/51
port link-aggregation group 100
#
interface GigabitEthernet1/0/52
port link-aggregation group 100

Switch 2

interface Bridge-Aggregation100
link-aggregation mode dynamic

Apply port configuration.

interface GigabitEthernet2/0/1
port link-aggregation group 100
#
interface GigabitEthernet2/0/2
port link-aggregation group 100
#
interface GigabitEthernet1/0/1
port link-aggregation group 100
#
interface GigabitEthernet1/0/2
port link-aggregation group 100

Switch 1

interface Bridge-Aggregation100
port link-type trunk
undo port trunk permit vlan 1
port trunk pvid vlan 456

Switch 2

interface Bridge-Aggregation100
port link-type trunk
undo port trunk permit vlan 1
port trunk pvid vlan 456

Respect the order, do not apply commands to physical interfaces.

Python Notes

a = whatever
a[1] = h
a[-1] = r

b = whatever
a=b -> True

RAW
a = r’whatever\new’

WHITESPACE
a = ‘ whatever ‘
a.strip()

SPLIT
a = 127.0.0.1
octets = a.split(‘.’)

JOIN
“.”.join(octets)

Display IP Address of users browser

< ?php
 // the IP address is unknown, so it equals to "%s" now.
 $urlTemplate = 'http://api.ip2location.com/?' . 'ip=%s&key=demo' .  '&package=WS10&format=json';
 // Current browser session
 $ip = $_SERVER['REMOTE_ADDR']?:($_SERVER['HTTP_X_FORWARDED_FOR']?:$_SERVER['HTTP_CLIENT_IP']);

 $urlToCall = sprintf( $urlTemplate, $ip);

 $rawJson = file_get_contents( $urlToCall );

 $geoLocation = json_decode( $rawJson, true );

 echo 'Hello to ', $geoLocation['city_name'];

?>

Best Sports Trip Weekends 2015

Manitoba Roadside Attractions

grep '^your_word' /path/to/file | wc -l

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Sending email with mutt

Simple message with text in the body of the email

mutt -s "Test from domain" user@domain.com < /temp/message.txt

And if you need to send an attachment

mutt -s "Test from domain" user@domain.com < /temp/message.txt -a /temp/file.jpg

This is another way to write the test, having the body in the same line.

echo "This is the body" | mutt -s "Testing mutt" user@domain.com -a /temp/file.jpg

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Remove SSH from cisco router

To delete all Rivest, Shamir, and Adelman (RSA) keys from the router

crypto key zeroize rsa

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Grep within .gz file without uncompressing

zcat file.gz | grep string

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Your CPU and memory will do all the work. Nothing will be stored on the harddrive.