Your very own Ubuntu 13.04 themed Heisenberg system notification!
…….Made by your’s truly.
And if you wanted a desktop background complete with inbuilt system notification, here it is!
Tag: Ubuntu
Quick Linux Post: CLI SysAdmin Tools
Linux CLI SysAdmin Tools.
Here is just a really short post regarding a collection of CLI SysAdmin tools.
These tools definitely warrant a page in their own right, but I just don’t have the time at the moment.
(And I just wanted to get them down before I forgot them)
I will be expanding this topic at some point (probably in a separate page), but until then, this will have to do!
top
top
Shows system processes in real-time
Displays a dynamic list of processes which (by default) updates every few seconds, and
Focuses on the most CPU-intensive processes
Top enables several commonly used ‘hot keys’ which serve various handy purposes, some of these are:
q – quits the application
z – toggles colour/monochrome
t – toggles summary info
m – toggles memory info
space – refresh display
A – toggles display by categorising processes into groups based on various system resources
f – enters an interactive configuration menu for ‘top’ field management (ESC to return to top display)
r – allows ‘renice’ command to be applied to a particular process via its PID
k – allows ‘kill’ command to be applied to a particular process via its PID
w
w
Displays who is currently online / logged into the system
Can provide information regarding what they are doing
Variation can include:
w username
or
w matt
as examples
pstree
pstree
Displays a static process tree within the terminal
.
more to follow………………………..
Wasting time…….With Linux! #2!!!
Easter Eggs
More shenanigans from the command line within Ubuntu; EASTER EGGS!
In the coming months, if I get wind of a heap of these, then I might dedicate Linux Easter Eggs their own page, but for now a humble post will suffice.
Go on, try these out in your Ubuntu or Linux Mint installation, you know you want to!
For the apt-get VS aptitude Easter Eggs, you may firstly need to install aptitude depending on your distribution’s bundled software. In the case of Ubuntu 13.04, aptitude is NOT part of the main installation (though it is in LM15), and therefore has to be added afterwards with either the Ubuntu Software Centre or (ironically enough) apt-get. For the latter, the following should work:
sudo apt-get install aptitude
Then, try this out to get started:
apt-get moo
and to answer the age-old question regarding the difference between apt-get and aptitude:
aptitude moo
and……
aptitude -v moo
and……
aptitude -vv moo
and……
aptitude -vvv moo
and……
aptitude -vvvv moo
and……
aptitude -vvvvv moo
and finally (after long last)……
aptitude -vvvvvv moo
and continuing the apt-get VS aptitude (and to a lesser extent, ‘cows’) theme, here are a few more:
apt-get -h | tail -n 1
and…….not to forget:
aptitude -h | tail -n 1
Within previous versions of Ubuntu (well, 8.04 at least!) there was also the ‘Wanda the fish” Easter Egg.
I downloaded and installed 8.04.4 LTS (Hardy Heron) within a Virtual Box VM just to test this one….
Open the quick-command ALT-F2 and type:
free the fish
and…….you will be rewarded with ‘Wanda the fish” swimming around your desktop for a few minutes, a la below:
Humorously enough, if you try the same stunt in 13.04 you are greeted with:
In case you were about to ask; No, clicking on the file/application or otherwise interacting with it in any other way doesn’t illicit any response (that I have found, anyway!).
Wasting time…….With Linux!
Inspired by the movie Inception, I thought that I’d have a go at getting three operating system’s deep with everyone’s favourite free VM generator, VirtualBox!
Below is a screen-capture from my system running three flavours of Ubuntu deep.
My specs are: Late 2012 (10,1 Model) MacBook Pro Retina 15in, Intel® Core™ i7-3720QM CPU @ 2.60GHz × 8, 16gig RAM, 512gig SSD: Running Ubuntu 13.04 x64 (on its own partition).
The stunt: Ubuntu 13.04 with VirtualBox running Linux Mint 15 XFCE; running VirtualBox which in turn is running Lubuntu (rather slowly).
Next time I get really bored, I might try going deeper, but I will really need to plan out the resources granted to each VirtualBox VM.
For this example I think I granted 10gig RAM to Linux Mint, and 2gig to Lubuntu, but doing anything within Lubuntu was like wading through molasses (in snow boots).
Hope you enjoyed!
-Matt
The BBBlog. 