Open-source projects to learn concurrency-managed network programming in Unix? Post: 302686981

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Top Forums UNIX for Dummies Questions & Answers Open-source projects to learn concurrency-managed network programming in Unix? Post 302686981 by TheTaoOfPhil on Wednesday 15th of August 2012 07:33:07 PM

08-15-2012

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Open-source projects to learn concurrency-managed network programming in Unix?

Hi,

I am a mid-career programmer with extensive experience in object-oriented design and development in C, C++, and C#. I've written a number of multi-threaded server applications and background services, although my grasp of networking protocols is a bit weak: my current job drifted away from the promise of true infrastructure work and into application development. That, along with the C#/.NET technology stack, has made me a bit dull.

I am ready for a change.

I am about 1/3 the way through APUE and am hooked. Unix really appeals to me. I plan to continue on to the Steven's network programming volumes. I am of course coding up my own exercises as I go through the material.

My ideal job would be something along the lines of a recent (admittedly vague) job posting that describes woking on "a highly flexible/scalable framework to provide services to various end user applications," requiring "proficiency in building network protocol frameworks and thorough knowledge of inter-process communication, multithreading and thread synchronization."

Ideally I would find an employer who can leverage my Windows experience while also giving me exposure to this kind of work in Unix. But most employers these days don't want to have to make that kind of investment in their employees.

So I am considering finding an open source project where I could both make a contribution and acquire these skills. The ideal project would be in C or C++: several traumatic experiences with memory leaks in C# and the CLR have given me a strong yearning for reclaiming control of allocation.

There are a number of good open-source projects out there, but many of them are either done (e.g., OpenLDAP) or being done in Java (e.g., HDFS). Can anyone recommend any active open-source projects for this purpose?

Or do you have any other ideas about making this kind of career transition?

Many thanks for your help!

TheTaoOfPhil

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nwpjmv

NWPJMV(1)							      nwpjmv								 NWPJMV(1)

NAME

       nwpjvm - Move print job to Unix queue

SYNOPSIS

       nwpjmv [ -S server ] [ -h ] [ -U user name ] [ -P password | -n ] [ -C ] [ -q queue name ] [ -c command ] [ -j job number ] [ -d ]

DESCRIPTION

       nwpjmv is a program that connects to print queues on NetWare servers and moves a designated print job to a Unix queue.

OPTIONS

       -h
	  -h is used to print out a short help text.

       -S server
	  server is the name of the server you want to use.

       -U user
	  user is the print server name at the server.

       -P password
	  password  is the password to use for the print server at the server. If neither -n nor -P are given, and the user has no open connection
	  to the server, pserver prompts for a password.

       -n
	  -n should be given if the print server does not require a password.

       -C
	  By default, passwords are converted to uppercase before they are sent to the server, because most servers require this. You can turn off
	  this conversion by -C.

       -q queue name
	  queue name is the name of the print queue you want to service.

       -c command
	  nwpjmv  removes  the designated job from the Novell queue and feeds the job file to stdin.  command is the printing command that is exe-
	  cuted for each job. The default command is 'lpr'.

	  You can insert several flags into the command, preceded by %. These are replaced with values retrieved from the queue structure for  the
	  print job.

	  %u: This field will be replaced by the name of the user who posted this print job.

	  %d: This field will be replaced by the job description field of this print job.

       -j job number
	  This designates the ID number of the print job to be moved.

       -d causes extra error messages to be logged.

SEE ALSO

       nwclient(5), slist(1), pqlist(1), ncpmount(8), ncpumount(8), pserver(1)

CREDITS

       nwpjmv was written by Bruno Browning (bruno@lss.wisc.edu) based on pserver by Volker Lendecke (lendecke@math.uni-goettingen.de)

nwpjmv								    03/15/2003								 NWPJMV(1)