Password validator

 Validating password with python.

Regex

import re

passRX = re.compile(r'[A-Za-z0-9@#$%^&+=]{8,}')

pp = passRX.search('dy_5mupV')

pp == None

True

pp = passRX.search('DEVGukvk')

pp == None

False

Reference:

https://stackoverflow.com/questions/2990654/how-to-test-a-regex-password-in-python

Using regex in vim

Search and replace using quantifiers.

Example:
This will erase all checkID's with single and/or double digits.

:%s/"checkID":[0-9]\{1,2\} //g

Before

Running command.

Match IP numbers with regex.

Print any IP address talking on port 21 in coming or out going.

Change the port number to any port that needs to be matched.

netstat -na | perl -ne '/((\d{1,3}\.){4}21)/ &&  print ;'