Getting file size of current program?

I'm running a program that calculates the amount of disk space used (not free). I get an error whenever the loop iterates over the file actually calculating:

test:9: No such file

local Disk = shell.dir ();
local DiskContents = fs.list (Disk);

local DiskSize = 0

for index, file in pairs (DiskContents) do
print ("Previous Space Calculated: "..DiskSize);
print ("Current File: "..file);
***** DiskSize = DiskSize + fs.getSize (file); ***** Line 9
end

print ("Total Disk Space Used: "..DiskSize.." of "..fs.getFreeSpace (Disk));

That's because you aren't using the full path.

Your code lists things in the directory "Disk", eg.

Disk/startup
Disk/program
Disk/help

But fs.list returns a table of names looking like this:

startup
program
help

fs.getSize expects to get the full path (Disk/startup), but is handed the "local" path (startup).

fs.combine( "Disk", "file" ) will return "Disk/file", or the absoulte path. (Note: you should still pass it the variable file, not "file". The string was an example)

By converting to the full path, it seems to work correctly now. Thanks.

RadiationAlert, on 07 June 2015 - 05:28 PM said:

local Disk = shell.dir ();
local DiskContents = fs.list (Disk);

local DiskSize = 0

for index, file in pairs (DiskContents) do
print ("Previous Space Calculated: "..DiskSize);
print ("Current File: "..file);
***** DiskSize = DiskSize + fs.getSize (file); ***** Line 9
end

wow! i learn new code in LUA i finally get it how for index, var in pairs(val) do end it works :D/> thank you for the Code T_T

-- i test this code and it works :D/>
test={'xxd','xdx','xdd'}
for var1, var2 in pairs(test) do
if var2=='xdd' then
  print(var1) print(var2)
end
end

+1 Like

This Code for my OS ;D