Suggest books for understanding Ubuntu Linux Post: 302731731

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Operating Systems Linux Ubuntu Suggest books for understanding Ubuntu Linux Post 302731731 by DGPickett on Thursday 15th of November 2012 04:30:44 PM

11-15-2012

Registered User

I am big on a Proof of Concept (POC) demonstration of alternative technologies, so I can get into technologies not in my original job description. Then, I have processional experience when I leave. Not a web developer? Put up some useful web services to help yourself and the group. Not a C/JAVA/PERL guy? Write some useful tools, reports, in your new language and share them around. Developers can get what they need free in the world of open source, or write a new whatever from scratch. It might be better than the original. I wrote uniq and comm in C before I discovered their names. My last uniq was better, a sort-free home-brew binary tree tool that also does aggregates:

Code:

$ aggsx --help
 
Usage: aggsx [ -b ] [ -l ] [ -p <prefix> ] [ -u ] [ -d ] [ -h ]
 
Computes the count distinct, count null, min, count of min, max,
count of max, average (mean) of not null values if numeric,
median of not null values, largest of the most popular values,
count of that most popular value.
If -l is present, first prints out all values in order and their counts,
null last, but no aggregates.
If -b is present, prints out like -l and then prints aggregates.
If -p is present, the aggregate is prefixed with '<prefix>|'.
If -u is present, just immediately prints out unique values.
If -d is present, just immediately prints out duplicated values.
If -h is present, prefixes values line with header line:
CtD|CtN|Min|CtMin|Max|CtMax|Avg|Med|MPop|CtMPop
 
$

I should add an argument to set the null string, currently hardwired for Interbase/firebird '<null>'. https://www.unix.com/shell-programmin...roup-unix.html

You can get certified in the various LINUX/UNIX/Language skills, and get hired with them as 'nice to have', an edge on the competition, in a less skill-intense area than development.

Last edited by DGPickett; 11-15-2012 at 05:36 PM..

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LEARN ABOUT DEBIAN

ubuntu-dev-tools

ubuntu-dev-tools(5)						File Formats Manual					       ubuntu-dev-tools(5)

NAME

       ubuntu-dev-tools - Configuration for the ubuntu-dev-tools package.

DESCRIPTION

       The  ubuntu-dev-tools  package  is  similar in scope to the devscripts(1) package, providing a collection of scripts which may be of use to
       Ubuntu and Debian developers or others wishing to build Debian packages.

       Some of these scripts have options which may be configured  on  a  system-wide  and  per-user  basis.   These  options  are  configured	in
       devscripts.conf(5).

       All variables are described in the script's manpages. Package-wide variables begin with "UBUNTUTOOLS" and are listed below.

       Every script which reads the configuration files can be forced to ignore them by using the --no-conf command-line option.

ENVIRONMENT

       All ubuntu-dev-tools configuration variables can be set (and overridden) by setting them in the environment (unlike devscripts).

       In addition, several scripts use the following environment variables:

       UBUMAIL
	      Overrides  DEBEMAIL  and	DEBFULLNAME  when  the	target	is  clearly  Ubuntu.   Can  either  contain an e-mail address or Full Name
	      <email@example.org>.

       DEBEMAIL, DEBFULLNAME
	      As in devscripts(1).

PACKAGE-WIDE VARIABLES
       The currently recognised package-wide variables are:

       UBUNTUTOOLS_BUILDER
	      This specifies the preferred test-builder, one of pbuilder (default), sbuild, pbuilder-dist.

       UBUNTUTOOLS_DEBIAN_MIRROR
	      The preferred Debian archive mirror.  Should be of the form http://ftp.debian.org/debian (no trailing slash).  If not specified, the
	      master will be used.

       UBUNTUTOOLS_DEBSEC_MIRROR
	      The  preferred Debian security archive mirror.  Should be of the form http://security.debian.org (no trailing slash).  If not speci-
	      fied, the master will be used.

       UBUNTUTOOLS_UBUNTU_MIRROR
	      The preferred Ubuntu archive mirror.  Should be of the form http://archive.ubuntu.com/ubuntu (no trailing slash).  If not specified,
	      the master will be used.

       UBUNTUTOOLS_UBUNTU_PORTS_MIRROR
	      The preferred Ubuntu archive mirror.  Should be of the form http://ports.ubuntu.com (no trailing slash).	If not specified, the mas-
	      ter will be used.

       UBUNTUTOOLS_LPINSTANCE
	      The launchpad instance to communicate with. e.g. production (default) or staging.

       UBUNTUTOOLS_MIRROR_FALLBACK
	      Whether or not to fall-back to the master archive mirror.  This is usually the desired behaviour, as mirrors can	lag  the  masters.
	      If on a private network with only a local mirror, you may want to set this to no.  One of yes (default) or no.

       UBUNTUTOOLS_UPDATE_BUILDER
	      Whether or not to update the test-builder before each test build.  One of yes or no (default).

       UBUNTUTOOLS_WORKDIR
	      The directory to use for preparing source packages etc.  When unset, defaults to a directory in /tmp/ named after the script.

SEE ALSO

       devscripts(1), devscripts.conf(5)

AUTHORS

       This manpage was written by Stefano Rivera <stefanor@ubuntu.com>.

ubuntu-dev-tools						 December 19 2010					       ubuntu-dev-tools(5)