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Recent Articles

How to rename multiple files in Unix or Linux

Convert docx to doc in Mac OS X Snow Leopard or Leopard

HISTORY shell variable management in Unix/Linux

How to eject CD/DVD from your MacBook or iMac

Play Prince of Persia on Ubuntu Linux using DOSBox

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SSI Includes

How to forward Nginx Perl requests to Apache mod_cgi

Updates in aruljohn.com

  1. Rename multiple files in Unix or Linux from the command prompt - new
  2. iPhone WebApp: Latitude/Longitude Conversion between Decimal and Degrees/Minutes/Seconds - Updated it, fixed a minor bug
  3. iPhone WebApp: Is the website/webpage up? - Checks if a website or web page is up and working
  4. Deals & Sales for July 4th weekend - new deals for Independence Day
  5. Find network key for Verizon FiOS WEP SSID - network key for FiOS
  6. Mac OS X:Convert .docx file to .doc in Mac OS X Snow Leopard or Leopard - new
  7. Shell Script:Read a colon delimited file /etc/passwd and display certain columns - new
  8. HISTORY shell variable management in Unix/Linux - new
  9. Perl:Sample script to select data from MySQL table using DBI module - new
  10. Facebook Popularity of websites - Share, Like and Comment statistics - new
  11. How to eject CD/DVD from your MacBook or iMac - updated
  12. What Web Server does that website run on? - updated this page
  13. How to play Prince of Persia (DOS version) on Ubuntu Linux - using DOSBox emulator
  14. Country Information Lookup - updated country database
  15. SSN Lookup Program - displays state where the SSN was issued
  16. Detect iPad in PHP, Perl, JavaScript, Nginx, Apache, Lighttpd - How to programmatically detect an iPad visitor from the user-agent in PHP, Perl or JavaScript and configure it at webserver level for Nginx, Apache and Lighttpd servers.
  17. Perl code - Converting Binary to Decimal and vice-versa - updated
  18. Cron quick reference and examples - real world examples
  19. Installing Ubuntu Linux in VirtualBox - a tutorial with screenshots
  20. How to use tar, gzip and bzip2 - quick reference commands - I use them frequently
  21. Unicode List - html for snowman, sunshine, umbrella ☃ ☀ ☂
  22. Merry Christmas - Bible verses
  23. Rotate a website - by any angle (upside down or clockwise/counter-clockwise)
  24. Use Google Talk on iPhone/iPod Touch with Google App hosted domain - adding new URLs
  25. Preview short URL before visiting the actual website - Works for all - tinyurl, bit.ly, tr.im, is.gd.
  26. Phone Card Coupons - Call India for 2.21 cents per minute or use my referral 149070 at stanacard.com
  27. (128)Network is unreachable: connect to listener on [::]:80 - fix this error in Apache
  28. MD5, SHA1, CRC32 Hash Generator - Convert text to md5, sha1, crc32 hash
  29. Rescue and backup your important files - from a corrupt Windows XP/Vista partition
  30. How to remove CTRL M characters - remove the annoying ^M characters in files
  31. Bible in one page - now includes the full Bible in one page, technically
  32. Install Ubuntu Linux on your Sony PSP - a tutorial
  33. Save as PDF - how to save documents or webpages as PDF