rishabh, Author at PODTECH

UNIX

Ubuntu – What package does a file belong to??

Ubuntu – What package does a file belong to?? apt-file search filename or apt-file search /path/to/file To install apt-file, use: sudo apt-get install apt-file You will need to update its database before you can use it: sudo apt-file update

UNIX

Ubuntu – Which Process is Using a port?

Ubuntu – Which Process is Using a port? 1- Find what application/process is using the pro, type: sudo netstat -lpn |grep :8080 and press Enter. You will get an output similar to this one tcp6 0 0 :::8080 :::* LISTEN 6782/java 2- I have got the process Id, which is 6782, now this is the […]

Security, UNIX

Heart Bleed – Exploit Example Code

Heart Bleed – Exploit Example Code If you need to test your server for the vulnerability, here is a simple Python script… [python] #!/usr/bin/python import sys import struct import socket import time import select import re from optparse import OptionParser options = OptionParser(usage=’%prog server [options]’, description=’Test for SSL heartbeat vulnerability (CVE-2014-0160)’) options.add_option(‘-p’, ‘–port’, type=’int’, default=443, […]

Security, UNIX

Ubuntu – Update OpenSSL – Fix HeartBleed Vulnerability

In case you haven’t heard, a critical bug in the widely used OpenSSL library has been disclosed this week. http://www.bbc.co.uk/news/technology-26971363 Despite the cool name and vector logo, Heartbleed is one of the scariest security bugs to hit the Internet in a long time. I was able to query my own server to reveal memory […]

Perl

Perl – Compare Array Contents when length is identical and order matches

Perl – Compare Array Contents when length is identical and order matches Comparing arrays side by side. Do they match or dont they? @a=(1,0,1,0,0); @b=(0,0,1,0,0); NO! @arr1=(0,1,1,1,1,1,0,1); @arr2=(0,1,1,1,1,1,0,1); use Algorithm::Diff qw( LCS_length); my $arr_count1 = @arr1; my $arr_count2 = @arr2; if($arr_count1 != $arr_count2) { print “NOMATCH\n”; ## NO MATCH } else { $count = LCS_length […]

Perl

Perl – Code Execution Time with accuracy – Time::HiRes

Perl – Code Execution Time with accuracy – Time::HiRes How long does it take to execute some code? use Time::HiRes qw( time ); my $start = time(); // Code goes here sleep 10; my $end = time(); print “SPRINTF: “; printf(“%.6f\n”, $end – $start);

rishabh

Ubuntu – What package does a file belong to??

Ubuntu – Which Process is Using a port?

Heart Bleed – Exploit Example Code

Ubuntu – Update OpenSSL – Fix HeartBleed Vulnerability

Perl – Compare Array Contents when length is identical and order matches

Perl – Code Execution Time with accuracy – Time::HiRes

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