Improve your bash/sh shell script with ShellCheck lint script analysis tool

Posted on in Categories Command Line Hacks, Howto, Programming last updated November 9, 2017

ShellCheck is a static analysis tool for shell scripts. One can use it to finds bugs in your shell scripts. It is written in Haskell. You can find warnings and suggestions for bash/sh shell scripts with this tool. Let us see how to install and use ShellCheck on a Linux or Unix-like system to enhance your shell scripts, avoid errors and productivity.

How to paste password easily when pasting into password input fields disabled on Google Chrome

Posted on in Categories Howto, Linux News, Open Source, Programming last updated March 6, 2016


I use the gpass password manager to store my randomly generated unique password for each site. However, many sites such as net banking prevent you from pasting a password when signing up. The site owner or webmaster disables pasting into password input fields. Want to paste your password on such site? Give it a try to don’t f*ck with paste Google Chrome extension.

Secure Password Hashing for Python Developers

Posted on in Categories Programming, Python, Security, Web Developer last updated July 22, 2014

It is important to store the passwords of user accounts in a secure fashion. There have been many high profile incidents where a security breach resulted in hackers obtaining database dumps of user passwords. The 2012 LinkedIn hack and the recent Adobe hack are two out of many similar cases. Due to the fact that the passwords were stored in an inappropriate fashion, the hackers (read as crackers) were able to recover the passwords of many user accounts and publish them on the Internet, resulting in an embarrassing PR fiasco for the companies.

Top 8 Tools To Search Memory Under Linux / Unix [ Forensics Analysis ]

Posted on in Categories Command Line Hacks, Hardware, Open Source, Programming last updated March 19, 2013

You can dump Linux or Unix server memory. This is useful for forensics analysis, and testing your own system. This is often desirable to see:

  • What code and what data actually resides in memory.
  • You can search for specific pids memory.
  • Search memory for string and other data such as passwords.
  • Works as add-on tool for gdb and others.
  • Search/replace/dump memory from running processes and core files.
  • All kinds of deep hacking activities that simply saves your time and solve problems.

Book Review: Python For Kids

Posted on in Categories Programming, Reviews last updated March 7, 2013

pythonforkidsPersonally, I consider programming as a fundamental right. The programming will teach children problem solving and reasoning skills. So, if you have gifted kid or nephew who is about to turn 10 or 11, gift him Python for kids book. The book introduces kids to the basic concepts of Python programming. The kids require no previous programming experience. However, must understand basic math concepts.

Linux / Unix: Install and Use Geany Integrated Development Environment

Posted on in Categories Howto, Open Source, Programming, Reviews, Web Developer last updated January 13, 2013

Geany is a great and light weight cross-platform integrated development environment for Linux and Unix based systems. It supports C, C++, Java, PHP, Python and 50+ other programming languages. Geany is known to run under Linux, FreeBSD, NetBSD, OpenBSD, MacOS X, AIX v5.3, Solaris Express and Windows. Geany more closely resembles programming editors available for Microsoft Windows such as Notepad++. So if, you are switching from MS-Windows to Ubuntu/Debian/Fedora/Mint or BSD/OS X/Unix like platform try geany IDE.

diff Command: Colorize Output On The Unix / Linux Command Line

Posted on in Categories Command Line Hacks, Programming, Web Developer last updated November 26, 2012

The diff command compare files line by line and displays a list of changes between two file. You can use diff command to:

  1. See the changes between one version of a file.
  2. Compare two configuration or program files.
  3. Create a patch file which can be applied with the Linux / Unix program patch.

Say hello to colordiff

colordiff is a wrapper for diff and produces the same output as diff but with coloured syntax highlighting at the command line to improve readability. colordiff has been tested on various flavours of Linux and under OpenBSD, but should be broadly portable to other systems.