Hello, everyone, and welcome to the lecture
Keyboard Keys Used in Linux. Now you're probably
thinking, hey, I'm going to the keyboard keys. But
I already know these keys. Great, if you know these
keys, beautiful. And I will recommend, you could
go ahead and skip this lecture right away and go
to the next one. But I have created this lecture
for those people who are trying to get into IT for
the very first time. And I have seen, and I have
experienced, that those people who are trying for
the first time have or had a problem in the past,
understanding these keys or even pronouncing these
keys. These keys are the actually symbols, which
are primarily on top of the digit key. So I'm
going through these keys one by one, so you
understand actually how to access them, and how
these keys are pronounced. So let's go to the
first key. First key is Escape key. Escape key is,
is used whenever you are, especially in a VI
editor and you have any key press or in editing
mode, you got to escape it, and it will get you
out of that. So as it sounds escape, is your Escape
key, is your lifesaver to get out of any of the
previously pressed keys. Then we have tilde, which
is the key right below it. Tilde is that little
curly thing on top, or right below that Escape
key. Usually, when you do cd tilde, it's actually
taking you to your home directory. And right below
that tilde, we have the backtick. Now, don't
confuse the backtick with a single quote, or even
comma. Backtick is kind of like backward, and it is
like a backward to the single quote. Then we have
the next key is the number one and on top of the
number one we have a symbol that is called
exclamation point. Now a lot of people have heard
of exclamation point, great, which is kind of like
emphasizing something in English. And in Linux,
you could also refer to this or also many times it
is referred to as bang. The next key is at sign,
and I'm sure a lot of people are familiar with
that. If you have an email, then you will notice
that your email has your name in front of it, and
then after that, followed by the at sign and the
domain for example, @hotmail, gmail.com, or
whatever your email account is. Number three key
has a pound sign on top of it. Also referred to as
hash tag. In Linux this key is used in
scripting or in a file or any configuration file
to comment out any of the things that not going to
be used and just for information purposes. The
next key number four has dollar sign. In scripting
language, that dollar sign is defined as an
variable, which we'll cover in the shell scripting
module. The next one is the percent sign. Number
six has the caret sign also, sometimes it people
in a simple language they call it as cap. But in
Linux you have whenever you hear caret, it means
anything at the beginning of something. So if
you're doing ls -l, and you want to
grep something that starts with something, you
could use the caret sign. Number seven has an
ampersand, ampersand or and sign. So that is also
to put something in the background. If you're
running the script, you could use ampersand and it
will put the script or your process in the
background. Then number eight has the asterisk
sign. Also if you if it is hard to pronounce, you
could pronounce this star. So many times I also
pronounced a star, so it doesn't really matter you
pronounce the star, asterisk it both are okay. Then
number nine, it has open parentheses. Now again,
don't confuse open parenthesis with curly braces
and bracket, which I will cover right after in the
second line. So keep in mind number nine, the
curly thing looks like a half c is referred to as
open parenthesis, number zero has closed
parenthesis. Then next to it, we have the hyphen
sign. Hyphen sign,
no first of all on top it's underscore, and then
the bottom is hyphen, which is also used as an
option or dash. So if you're running a command in
Linux, then you have to specify sometimes the
options with it Every time there's an option that
needs to be accessed, you have to specify that
dash. So, whenever you hear dash or hyphen, they
both are referred to as each as the same key
interchangeably. Plus sign, equal sign we all know.
Then we are we have a tab key which actually skips
few spaces. Then there is the most one of them
important keys, that is curly braces. So opening
the top one is the opening curly braces, and the
bottom one is opening bracket. Just like that, the
on the right hand side, the top key is closing
curly braces, and the bottom key is the closing
bracket. Alright, enter key or enter key. So this
is I'm sure everybody knows enter key. But
sometimes people also refer this key as carriage
return. Then we have colon key and semicolon key.
These two keys are used in scripting language as
well or whenever you're using VI editor you can
specify a colon wq to save the file, which we'll
cover later on of course. Then we have double quote
and a single quote. So remember the single coat
below is not a comma. So it's a single quote. So
double quote on top, the bottom is single quote. And
then the most, the key that is mostly going to be
used in Linux right here is called pipe, which is a
simple straight line. It is used to combine a few
commands together or take the output from first
command and give it to the second command. Below it
we have backslash. Now remember backslash is used
in Windows whenever you are specifying a path,
that backslash, the path that is given in Windows,
it is used with a backslash. And in Linux, it is
used with a forward slash, which I'm going to
cover in this line, fourth line. Alright, so shift
key, whatever the key is that I'm talking about
that is above numbers that are that can be
accessed with by pressing shift key. Then we have
less than sign, and below the less than
sign is the comma, and the next one is greater than
sign, and below the greater than sign is period or
dot. Now these less than sign or greater than sign
is also referred in Linux as input and output. So
if you are using two greater than sign, it means
appending to the file. But if you use one greater
than sign, then it will overwrite to our file,
as less than sign will take the input from the
output. Again, don't confuse it. Right now, I just
want you to learn how you could access these keys
and how you could pronounce this key. So later in
the lecture, I don't want you to be, hey, what is
pipe or what is tilde or what is greater than
sign? How can I access that. So that is why I have
this lecture for you. And then next key is the
question mark and, and below it is the forward
slash. as I mentioned, in the line in the row
above it, the backslash is used for Windows, the
forward slash is used in Linux. So you could access
the path in Windows through the command line to the
backslash, but in Linux, you have to use forward
slash. And the last key I want to cover is the
Right Ctrl key,you see on the keyboard you have
two control keys one on the left side and one on
the right side. Many times in virtualization or
Oracle VirtualBox if you want to get your get
your mouse which is trapped inside the window if
you want to get out of that and release your mouse
you have to use this Right Ctrl key. Also in Linux,
when we are using certain commands and you do
Right Ctrl key, it will do a different function
than then pressing the Left Ctrl key.
Alright guys, so I hope now you understand each
one of these keys and how to access them and how
to pronounce these keys. Now maybe I have
pronounced couple of them differently. Or maybe
it's pronounced a different way depending on which
country you are living. But that is perfectly fine
as long as you know where and how to access each
one of these keys. But in Linux world, most of the
time that I have experienced these keys are
accessed or pronounced the way I have explained in
this lecture. Anyway, I hope this lecture served
this purpose. And if you have any question, please
do send me a message about any of these keys or if
you don't understand the functionality of any of
these keys. Good luck.
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