Question: Often I read about bigiron on mailing lists and the Internet forum. What is Big Iron and how it is related to UNIX system?
Q. How do I send an email using PHP and Apache webserver under Linux / UNIX operating systems? How do I send email from a PHP Script?
Q. My log files grow continuously. How do I limit the growth of UNIX log files stored in /usr/spool/ or /var/log/ directory?
Q. I had written lots of code in C for my school work and saved it as source code under /home/user/c/*.c and *.h. How do I find files by content such as string or words (function name such as main() under UNIX shell prompt?
Q. I need to sort data from a log file but there are too many duplicate lines. How do I remove all duplicate lines from a text file under GNU/Linux?
Q. Some service provider guarantees 99.999% uptime for their service. Can you explain meaning of five nines?
Q. How do I create username or user groups in upper case under Linux / *BSD / UNIX operating systems?