You can build and test regular expressions (regexps) on UNIX systems in
several ways. Discover the available tools and techniques that can help you
learn how to construct regular expressions for various programs and languages.
Many directories in the UNIX file system serve a special purpose, and
certain directories are named per long-standing convention. In this
installment of the "Speaking UNIX" series, discover where UNIX stores
important files.
Adopt 10 good habits that improve your UNIX command line efficiency—and break
away from bad usage patterns in the process. This article takes you
step-by-step through several good, but too often neglected, techniques for
command-line operations. Learn about common errors and how to overcome them,
so you can learn exactly why these UNIX habits are worth picking up.
This free tool gives you a huge amount of information all on one screen. Even
though IBM doesn't officially support the tool and you must use it at your own
risk, you can get a wealth of performance statistics. Why use five or six
tools when one free tool can give you everything you need?
Do you ever feel you wish you could answer some of your own questions when
you work with AIX and your System p™ server? Do you ever feel you
could save time by not having to call on the support professionals all the
time? Well, wish no more. Shiv Dutta discusses some of the AIX commands that
answer those questions and tells you how to enlarge the list of such answers.
You can customize the UNIX shell to save time, to save typing, and to adapt
to your style of work. Shell startup files capture your preferences and
recreate your shell environment session after session, even machine to
machine.
Searching for an easy way to create high-quality graphs that you can print,
publish to the Web, or cut and paste into performance reports? Look no
further. The nmon_analyser tool takes files produced by the NMON performance
tool, turns them into Microsoft Excel spreadsheets, and automatically produces
these graphs.
On UNIX systems, each system and end-user task is contained within a process.
The system creates new processes all the time and processes die when a task
finishes or something unexpected happens. Here, learn how to control processes
and use a number of commands to peer into your system.
Explore the vast terrain of the UNIX file system with the find command. One
of the most powerful and useful commands in the UNIX programmer's repertoire
is find. All flavors of UNIX have file systems that can contain thousands of
files of many different types. With so many choices, locating a specific file,
or set of files, can be difficult. The find command makes this task easier in
many ways.
This three-part series on memory tuning dives right into tuning parameters,
focusing on the many challenges and the various best practices of optimizing
memory performance, and it also discusses some improvements in AIX® Version
5.3. While memory tuning might be more difficult to implement than Central
Processing Unit (CPU) tuning, it certainly is no less important. You can do
more to tune memory on an AIX server than any other subsystem. Changing some
memory parameters on your system can increase performance dramatically,
particularly when these parameters are not optimized for the environment which
you are running. Part 1 of this series provides an overview of memory on AIX,
including a discussion of virtual memory and the Virtual Memory Manager (VMM).
