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Full Discussion: Odd(?) shell script practise
The Lounge What is on Your Mind? Odd(?) shell script practise Post 302803965 by Don Cragun on Tuesday 7th of May 2013 08:24:44 PM
Old 05-07-2013
It is fairly common practice when writing software that is to be used in multiple operating environments to use a scheme like one of these as a configuration option when installing the software. Obviously the copyrighted code in example 2 from HP configures itself each time the script runs based on the results of a call to uname. How the IBM script in example 1 and the nagios script in example 3 are setup may be hidden in the ... areas of the code you didn't show or during the installation of these scripts.

I don't know of any university course that teaches this style, but you can bet that HP, IBM, and Oracle have coding guidelines (and probably internal classes) that specify coding styles for these kinds of application scripts.
 

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LEARN ABOUT CENTOS

nagios

nagios(8)                                                             Nagios                                                             nagios(8)

NAME

       Nagios - network/systems status monitoring daemon

SYNOPSIS

       nagios [-h] [-v] [-s] [-d] <main_config_file>

DESCRIPTION

       nagios  is a daemon program that monitors the status of various network accessible systems, devices, and more. For more information, please
       consult the online documentation available at http://www.nagios.org, or on your nagios server's web page.

OPTIONS

       main_config_file
              The main configuration file.  On openSUSE systems this defaults to /etc/nagios/nagios.cfg

       -h     A helpful usage message

       -v     Reads all data in the configuration files and performs a basic verification/sanity check.  Always make sure you verify  your  config
              data before (re)starting Nagios. You can also use the Nagios init script to verify your configuration - try: rcnagios check_verbose

       -s     Shows projected/recommended check scheduling information based on the current data in the configuration files.

       -d     Starts Nagios in daemon mode (instead of as a foreground process).

FILES

       /etc/nagios
              Default configuration directory for nagios

AUTHOR

       Nagios  is  written  and maintained by Ethan Galstad <nagios@nagios.org>.  This manual page was written by sean finney <seanius@debian.org>
       for the Debian GNU/Linux operating system (but it may be freely used, modified, and redistributed by others) and adapted by Lars Vogdt  for
       openSUSE.

sean finney, Lars Vogdt                                       February 2006, May 2010                                                    nagios(8)
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