Exrex is a command line tool and python module that generates all – or random – matching strings to a given regular expression and more. It’s pure python, without external dependencies.
There are regular expressions with infinite matching strings (eg.: [a-z]+
), in these cases it limits the maximum length of the infinite parts.
It uses generators, so the memory usage does not depend on the number of matching strings.
Also Read : Sh00t : A Testing Environment for Manual Security Testers
Features
How Installation Is Done?
To install it, simply run the below command:
$ pip install exrex
Or else you can try the below steps to install it
$ easy_install exrex
How to use it?
If it is as python module
import exrex
exrex.getone(‘(ex)r\1’)
‘exrex’
list(exrex.generate(‘((hai){2}|world!)’))
[‘haihai’, ‘world!’]
exrex.getone(‘\d{4}-\d{4}-\d{4}-[0-9]{4}’)
‘3096-7886-2834-5671’
exrex.getone(‘(1[0-2]|0[1-9])(:[0-5]\d){2} (A|P)M’)
’09:31:40 AM’
exrex.count(‘[01]{0,9}’)
1023
print ‘\n’.join(exrex.generate(‘This is (a (code|cake|test)|an (apple|elf|output)).’))
This is a code.
This is a cake.
This is a test.
This is an apple.
This is an elf.
This is an output.
print exrex.simplify(‘(ab|ac|ad)’)
(a[bcd])
Command line usage ?
exrex –help
usage: exrex.py [-h] [-o FILE] [-l] [-d DELIMITER] [-v] REGEX
exrex – regular expression string generator
positional arguments:
REGEX REGEX string
optional arguments:
-h, –help show this help message and exit
-o FILE, –output FILE
Output file – default is STDOUT
-l N, –limit N Max limit for range size – default is 20
-c, –count Count matching strings
-m N, –max-number N Max number of strings – default is -1
-r, –random Returns a random string that matches to the regex
-s, –simplify Simplifies a regular expression
-d DELIMITER, –delimiter DELIMITER
Delimiter – default is \n
-v, –verbose Verbose mode
Examples:
$ exrex ‘[asdfg]’
a
s
d
f
g
$ exrex -r ‘(0[1-9]|1[012])-\d{2}’
09-85
$ exrex ‘[01]{10}’ -c
1024
Pystinger is a Python-based tool that enables SOCKS4 proxying and port mapping through webshells. It…
Introduction When it comes to cybersecurity, speed and privacy are critical. Public vulnerability databases like…
Introduction When it comes to cybersecurity, speed and privacy are critical. Public vulnerability databases like…
If you are working with Linux or writing bash scripts, one of the most common…
What is a bash case statement? A bash case statement is a way to control…
Why Do We Check Files in Bash? When writing a Bash script, you often work…