Oct 072011
 

This is my small top 7 of the most read articles from Linuxaria in the month of September, it’s your opportunity to read them if you missed them during last month.

7 – Pipes: what are they and Example of Use

Unix based operating systems like Linux offer a unique approach to join two commands on the terminal, with it you can take the output of the first command and use it as input of the second command, this is the concept of pipe or | . Pipes allow two separate process to communicate with each other also if they were not created to do it, so this open an infinite series of opportunity.

A basic example is:

ls -l | grep rwxrwxrwx

This command will print the list of all the files in the local directory that have permission rwxrwxrwx (or that have rwxrwxrwx in their name).

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Oct 042011
 

Cgroups is present in the official Linux kernel 2.6.24 (late 2007), still he’s not much know or used (at least for what i know).
In this article I’ll give you an overview of this powerful Linux tool to control how much CPU, memory, disk I/O or network I/O each process or user can use in your server.

So in short cgroups it’s a feature to limit, account and isolate resource usage (CPU, memory, disk I/O, etc.) of process groups.
Let’s see how.

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Oct 012011
 

Original article published on the italian Blog il panda verde

Today we talk about Deja Dup, the tool I used to make a backup of files before the upgrade of my Lubuntu at release 11.04 (most probably this arrive a little late, but the program is worth a blog post) . It is indeed a great software to create backups (so that it’s part of the standard packages in Fedora 13 and if everything goes in the right way it will also be added to Ubuntu 11.10), but the reason for the post is not just that, a large plus of Deja DUP is its extreme ease of use, it takes a couple of clicks to configure it and save our precious documents, even “in the cloud”.
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Sep 292011
 

A new Humble Indie Bundle is started yesterday, a great and new opportunity to know and buy new indie game for a cheap price.

This time the offer it’s a bit different from the former edition, there is just 1 videogame in the main bundle: Frozen Synapse, but If you beat the promotion average you will also get the Humble Frozenbyte Bundle which includes the games Trine, Shadowgrounds Survivor, Shadowgrounds, the game prototype Jack Claw and a preorder for Splot which is currently in development.

As of writing, that means you’ll have to part with $4.51 to get Trine, Shadowgrounds, Shadowgrounds: Survivor, Splot and Jack Claw — a fair deal considering Frozen Synapse alone usually cost around $25 on Steam.

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Sep 262011
 

synchrorepSynchorep is an opensource software to synchronize two directories, that mean reporting all modifications of one to the other and vice versa. At the end of synchronization, both directories will be strictly the same.

This is usefull principaly for nomads who work with a laptop or usb key but may interest also users who want making differencial copy to gain time.

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