Previously codenamed “Vanderpool”, VT-x represents Intel’s technology for virtualization on the x86 platform. On November 13, 2005, Intel released two models of Pentium 4 (Model 662 and 672) as the first Intel processors to support VT-x. The CPU flag for VT-x capability is “vmx”; in Linux, this can be checked via /proc/cpuinfo, or in macOS via sysctl machdep.cpu.features.[19]

“vmx” stands for Virtual Machine Extensions, which adds ten new instructions: VMPTRLD, VMPTRST, VMCLEAR, VMREAD, VMWRITE, VMCALL, VMLAUNCH, VMRESUME, VMXOFF, and VMXON.[20] These instructions permit entering and exiting a virtual execution mode where the guest OS perceives itself as running with full privilege (ring 0), but the host OS remains protected.

As of 2015, almost all newer server, desktop and mobile Intel processors support VT-x, with some of the Intel Atom processors as the primary exception.[21] With some motherboards, users must enable Intel’s VT-x feature in the BIOS setup before applications can make use of it.

Intel started to include Extended Page Tables (EPT),a technology for page-table virtualization,[24] since the Nehalem architecture, released in 2008. In 2010, Westmere added support for launching the logical processor directly in real mode – a feature called “unrestricted guest”, which requires EPT to work.[27][28]

Since the Haswell microarchitecture (announced in 2013), Intel started to include VMCS shadowing as a technology that accelerates nested virtualization of VMMs.[29] The virtual machine control structure (VMCS) is a data structure in memory that exists exactly once per VM, while it is managed by the VMM. With every change of the execution context between different VMs, the VMCS is restored for the current VM, defining the state of the VM’s virtual processor.[30] As soon as more than one VMM or nested VMMs are used, a problem appears in a way similar to what required shadow page table management to be invented, as described above. In such cases, VMCS needs to be shadowed multiple times (in case of nesting) and partially implemented in software in case there is no hardware support by the processor. To make shadow VMCS handling more efficient, Intel implemented hardware support for VMCS shadowing.
 

Source: x86 virtualization – Wikipedia

Andrew “Tridge” Tridgell (born 28 February 1967) is an Australian computer programmer. He is the author of and a contributor to the Samba file server, and co-inventor of the rsync algorithm.

He has analysed complex proprietary protocols and algorithms, to allow compatible free and open source software implementations.

Source: Andrew Tridgell – Wikipedia

https://bdselectronic.com.mk/

In North America, music appreciation courses often focus on Western art music, commonly called “Classical music“. Usually music appreciation classes involve some history lessons to explain why people of a certain era liked the music that they did. “Appreciation,” in this context, means the understanding of the value and merit of different styles of music. Music appreciation classes also typically include information about the composers, the instruments and ensembles, and the different styles of music from an era. Music appreciation courses are widely available in universities and colleges. Typically, these courses are designed for non-music majors. A significant part of music appreciation courses is listening to recordings of musical pieces or excerpts from pieces such as symphonies, opera arias and concertos. In some music appreciation classes, the class may go out to hear a live musical performance by an orchestra or chamber music group.

https://en.wikipedia.org/wiki/Music_appreciation

Some more useful user-management commands (also limited to local users):

To add a new user you can use:

sudo adduser new_username

or:

sudo useradd new_username

See also: What is the difference between adduser and useradd?

To remove/delete a user, first you can use:

sudo userdel username

Then you may want to delete the home directory for the deleted user account :

sudo rm -r /home/username

^{(Please use with caution the above command!)}

To modify the username of a user:

usermod -l new_username old_username

To change the password for a user:

sudo passwd username

To change the shell for a user:

sudo chsh username

To change the details for a user (for example real name):

sudo chfn username

And, of course, see also: man adduser, man useradd, man userdel… and so on.

To add a user to the sudo group:

usermod -aG sudo username

Source: A command to list all users? And how to add, delete, modify users? – Ask Ubuntu

Larghissimo – very, very slow (24 bpm and under)
Adagissimo – very slowly
Grave – very slow (25–45 bpm)
Largo – broadly (40–60 bpm)
Lento – slowly (45–60 bpm)
Larghetto – rather broadly (60–66 bpm)
Adagio – slowly with great expression[8] (66–76 bpm)
Adagietto – slower than andante (72–76 bpm) or slightly faster than adagio (70–80 bpm)
Andante – at a walking pace (76–108 bpm)
Andantino – slightly faster than andante (although, in some cases, it can be taken to mean slightly slower than andante) (80–108 bpm)
Marcia moderato – moderately, in the manner of a march[9][10] (83–85 bpm)
Andante moderato – between andante and moderato (thus the name) (92–112 bpm)
Moderato – at a moderate speed (108–120 bpm)
Allegretto – by the mid 19th century, moderately fast (112–120 bpm); see paragraph above for earlier usage
Allegro moderato – close to, but not quite allegro (116–120 bpm)
Allegro – fast, quickly, and bright (120–156 bpm) (molto allegro is slightly faster than allegro, but always in its range)
Vivace – lively and fast (156–176 bpm)
Vivacissimo – very fast and lively (172–176 bpm)
Allegrissimo or Allegro vivace – very fast (172–176 bpm)
Presto – very, very fast (168–200 bpm)
Prestissimo – even faster than presto (200 bpm and over)
Source: Tempo – Wikipedia