Fortran Programming Tutorials (Revised) : 021 : Executing from terminal and link for programs Video Lecture | Introduction to Fortran Programming (Basic Level) - Database Management

hello guys my name is Aaron and welcome
to my channel this series is a Caesar to
turrets on Fortran programming now in
the last two tutorials we may look last
few tutorials we were looking at
successive factorials how to use do
loops nested do loops Labour's and some
cautions you have to consider while
doing loops and all and how old aiming
the naming the loops with certain with
labels gives that makes a it makes it
mandatory that we have to you know and
end the loops with label names and all
now in this tutorial I will be telling
and in this tutorial I'll be you know
moving to a new concept of new concept
and this is nothing related with a
program part of it but this is a remor
related to the execution part of the
execution executing the program okay
now I'll explain you guys how to compile
this entire program and compile build
and execute the program in from the
terminal now what you guys can do is
that you can go to the folder this
program is stored or open a terminal and
go to go there okay where regardless
go to the place where the file is and
open the terminal with the bag tray with
a place on and then you know and then
you can use a terminal to run that okay
now I don't have to do that here because
in geni there's this inbuilt terminal
which is exactly the same as the
terminal that you have outside so it
doesn't matter so all you have to do is
it go to this instead of opening
separately I can go to this and run them
directly here and that's one of the
advantages of Jeanie
okay no my folder my program is in home
our own Fortran tutorials and factorial
now this tilde now this tile symbol
indicates a time that it's home our own
and then I'm in the same for for
tutorial folder eyes they're done as a
file is so if I just list all the files
with the command LS the shell script
shell command but doesn't matter for now
okay I get a lot of files like this now
this is the program I wanted look at but
these are some mixing these are some
there are some green files which I
haven't heard of and there's this text
file and this data file and all we look
at that one by one what I do I can I
don't
I don't want these I just remove all
these files not all of it
this this and this and this and this if
you guys didn't want to know what I
exactly did double-click the file name
with your left mouse key and then move
it to the place very where your cursor
is blinking cursor is blinking I press
the scroll wheel or the middle mouse
button and lotta matically printed it's
like it's like very easy to do easy to
do copy and this works in this works in
Ubuntu and maybe in some other Linux
versions but I'm not sure whether this
will work in other versions or like Mac
and all but it's you know what the try
then all you do is click enter and what
I see is that all these files are the
mode because we need this now they to
get the results it's a it's a three-step
procedure and for in Fortran first what
you do is that we have to compile it to
compile we compile this file what you'll
do is type G Fortran ok and then the
file name no sorry with a compiler flag
- C okay and then type the file name
let's do underscore factorial and click
enter looks like nothing happened but if
I just click LS if you guys see I get a
file call us do do underscore battle dot
o it's exactly the same file as this
button up with dot o extension and this
file is called as an object file this
file gets created whenever of whenever
compiler program this kind of files get
created whenever compiler program gets a
program gets compiled and all okay now
these articles are important because
these hardwood files help us to build
the executables now to make an air to
make an execute a lot of this what you
have to do is that letter type G photon
again and then type O 5 this time o flag
- or flux what this or flag does is that
it got it collects all the object files
that we mentioned here merges them to
produce one executable and when we do
that what you do is just type do in fact
other than you have to kill that dot o
file and click enter
yeah let's see let's see it said that it
won't do anything because we need to we
need to specify a file name further we
need to specify file name for this what
I do is I just justify a file name
called as fact okay no this is a little
annoying I think I made I think I made
it a little wrong I think this all flag
has to come here
okay well flag has to come here so this
way you're writing the curse the photon
name I'm using actually the compiler in
the compilers work you're going poking
the compiler here using the object files
okay and the - or more flow flag for
building building and this fact will be
executable if I click enter it looks
like nothing happened it didn't show any
error or warning if I just click LS I
get this green color file called as fact
now this fat is actually an executable
it may not have an extension but this is
an executable file and that all the
individual files are indicated with a
green color here so what I do is that I
just to execute this I just type the dot
and a backslash symbol and then type the
fact fact word and then click enter and
just like what I saw in the terminal
this becomes an inbuilt terminal and all
I have to do is that type the word type
tell them now type the give the input
and it works fine just like what we did
and the best thing is after doing all
the execution the file gets closed the
file gets exit the file gets closed the
file gets closed and the execution stops
and it reverts back to the previous we
were back to the previous process the
shell was acting actually working on ok
now this is actually a three-step
process wherein first initially you
compile the file with this keyword ok
let me just clear this up clear this up
so this is actually a three step process
first you have to do is that you have to
compile the file with this this
statement and build the state both a
file with this statement and then run it
with this statement ok now there's
another simple way to do it what you can
do is that G Fortran ok
and type do factorial dot f95 ok the
file name alone if I click enter nothing
happens but if you just press LS you get
this file called as a dot out now what I
did is that this frog this operation
compiles and whilst compiles in the file
and the builds executable in a single
step
why I am not using this is because this
will give my give a default default name
of the executive less a dot o UT and if
I just type run this a door do it a with
this notation and we're going to in
Linux you log the same face plus ten and
it works the same and it closes and
there is another way also okay this time
what do you do is that this is the
second way of comparing building and
this is third wherein you write the name
of the file and click on type - oh and
then tie with executing a like fact dot
fact one dot exe something like that you
can't ER nothing shows up but if I click
LS you get a new execute we'll call us
fact 1 dot exe ok this way you're
creating an executable princeton of the
default name a dot ODT and if you want
to run this it's the same fact one
exe and it works the same that's it and
there is just one more feature here
which i want to tell you guys yeah what
you can do is that click once you once
these are done ok there is this option i
want to tell you guys support see if you
guys notice i told you that if you guys
include this preprocessor directive you
can make the you can inst or not this
not only makes the compiler to by
default use this one it I told you that
there you can make the file as an
executable that can run on its own
without having without generating and
exited files and all right explain you
guys how that works
what do you do is that you can convert
this executable file into this file if
you're non-executable
okay if you just press LS if you guys
notice these file the fact fact one dot
exe and a dot out of executable these
two are not executables but you can make
this executable and run like how far to
fact one dot exe
not run by this command and this is
actually a shell command what he can do
is that something you can write
something like 750 chmod 755 chmod 777
it's ever you go
I prefer the chmod 777 this is something
to do with file permissions for read
write and save and all monitor and all
you never have to write this you know
you guys have little doubt and that you
can check google about it it'll there'll
be long I am sure that a lot of people
explain about file permissions and all
okay right chmod 777 and then type do
underscore factorial dot F 95 like click
enter what happens is that this becomes
a green symbol green color value now it
becomes clean now instead of let me see
if this works we just I do factorial it
may not work may not work let's see if I
were to you know if you have to type g
f-- g fortran and then type if you have
to type g fortran and then type 2
factorial that f95 it works fine but
something's not right here dot t then
fine now I'm sure the I'm pretty sure
there is a I think there is something to
work with
I think I'm not doing it properly I
suppose ok I let you guys know how how
to execute how to execute them in just a
single line and if they're as if there
is any or let you guys know if there
isn't I let you guys know that there
isn't any I haven't tried this before so
I don't have any idea about this I
thought I mean giving it a try okay in
anyway let's clear this up and there is
one more way also some this is one more
way suppose you want to store all the
answers suppose if you have to execute a
file and if you want to store all the
output
you get on the screen accept the values
that you feed on okay there's this
option where you do this executable file
press this a greater than suppress is a
greater than symbol and point it towards
a text file like this fact txt or some
are sometimes you know a fact that dat
whichever directed toward executed like
this and what it shows that doesn't show
any output because all the output will
be transferred to the text file it won't
show anything here unless it will show
only those values that turned out to be
a warning or an error only here and all
the proper legal out all the proper
outputs and the log file will be in the
fat file so it's still waiting but it's
in the problem is not quitting it's
still running it's just waiting for me
to give the value if we just keep 10 it
closes but it doesn't show any wrestles
but if I want to see what happens it
creates a new file called as fat txt
okay now if I were to open this up in
Genie okay okay if you guys want to open
this in G open this and terminal just
type genie and the file name and that's
it click enter and there you have it the
the whatever result you put whatever
result you put that's its gets printed
over here instead of printing it over
here gets typed over here as simple as
that and this is the way of you know
recording a lot of inputs inputs and all
the only thing is it didn't press 10
because 10 is is dynamically input in
sent as input whereas these values get
printed but as per the func as per the
function as well as our the code worked
out okay so that's the only difference
well that's all I have for you guys in
this tutorial in the subsequent videos
onwards I will not be using the build
and compile features when using the
compare and build features only to check
for any any debugging errors and if only
for debugging and all but well will be
compelling then all the files and
running and running them from the
terminal and terminal from here onwards
and this is the reason why I do not
prefer using code blocks because cold
loss is really good but haven't found a
way to know
do this process over there but if you
guys foul if you guys find it do let me
know Allah Allah I learn instead I learn
and you know make a character sky goes
up okay that's all I have for you guys
in this tutorial say guys next time and
by the way father I have to mention I
forgot to mention you guys all the dude
all the programs that you are doing in
doing here in this in this exam in these
tutorials and all the programs I did in
the previous tutorial be beside I am
slowly deleting the rating in the videos
because those videos are too long I'm
deleting those videos all that the
programs that it didn't over there and
over here or actually I will are
available for public access if you guys
like check out the description of each
and every one of my video I'll be giving
a link towards Dropbox folder and in
that Dropbox folder I have a folder
called as Fortran tutorials and inside
all the problems that we did so far are
uploaded over this you guys can have a
look at it and that fall and do check
the folder every now and then because
whenever I make any folder whenever I
make any file I'll just upload them over
there so you guys can have a look that
folder is like it has public access but
you cannot go there and modify the
content but you are allowed to you know
view you are allowed to just view and
get the files out and that's all I have
for you guys in this tutorial thank you
guys so thank you guys for watching and
see you guys next tutorial bye