How to Check File Size in 10 Programming Languages
C, C++, Java, Lua, Perl, Python, PHP, C#, JavaScript/Nodejs and Go.
Jan 30, 2023
Today, once again, we are going to exercise our knowledge by creating routines that can be useful in different situations. And this time we will see how to know the size of a file in 10 different programming languages, they are:
C
,
C++
,
Java
,
C#
, [PHP] (https://terminalroot.com/tags#php),
Lua
,
Perl
,
Python
,
JavaScript
/
Node.js
and
Go/Golang
.
As in the article:
How to Get the Current Directory in 10 Different Programming Languages
I’ll just post the code for each of them!
The
file.iso
file is fictitious and you must replace it with a valid file on your computer to carry out the tests.
You can compare the result using the command:
du -h file.iso
.
01.
C
filesize.c
#include <stdio.h>
int main (){
FILE * file = fopen ( "file.iso" , "rb" );
fseek ( file , 0 , SEEK_END );
int size = ftell ( file );
fclose ( file );
printf ( "%d MB \n " , ( size / 1024 ) / 1024 );
return 0 ;
gcc filesize.c && ./a.out
int main (){
std :: ifstream file ( "file.iso" , std :: ios :: in | std :: ios :: binary );
file . seekg ( 0 , std :: ios :: end );
std :: cout << ( file . tellg () / 1024 ) / 1024 << " MB \n " ;
return 0 ;
g++ filesize.cpp && ./a.out
public class FileSize {
public static void main ( String [] args ) {
String path = "file.iso" ;
long size = new File ( path ). length ();
System . out . println (( size / 1024 ) / 1024 + " MB" );
javac FileSize.java && java FileSize
file = io.open ( "file.iso" , "r" )
size = math.floor (( file : seek ( "end" ) / 1024 ) / 1024 )
print ( size .. " MB" ) lua filesize.lua
path = "file.iso"
size = os . path . getsize ( path )
print ( str ( int ( ( size / 1024 ) / 1024 ) ) + " MB" )
python filesize.py
$path
=
"file.iso"
;
$x
=
filesize
(
$path
)
/
1024
/
1024
;
echo
intval
(
$x
)
.
" MB
\n
"
;
php filesize.php
string path = "file.iso" ;
long size = new System . IO . FileInfo ( path ). Length ;
Console . WriteLine ( ( size / 1024 ) / 1024 + " MB" );
dotnet run
const { readFileSync: read } = require ( 'fs' )
const path = "file.iso"
let size = read ( path) .length
size = ( size / 1024) / 1024
console.log( parseInt( size) + " MB" )
node filesize.js
