Why file.exists of relative path on Linux always return false?

[Alex Parrill via Digitalmars-d-learn]

On Monday, 29 February 2016 at 14:50:51 UTC, Suliman wrote:
> I am trying to check relative path on Linux for exists.
>
> import std.stdio;
> import std.path;
> import std.file;
> import std.string;
>
>
>
> string mypath = "~/Documents/imgs";
>
> void main()
> {
>  if(!mypath.exists)
> 	{
> 		writeln(mypath, " do not exists");		
> 	}
>
>  if(!mypath.exists)
> 	{
> 		writeln(mypath, " do not exists");		
> 	}
>
>  if("/home/dima/Documents/imgs".exists)
> 	{
> 		writeln("/home/dima/Documents/imgs");
> 		writeln("Dir exists");
> 	}
>
> }
>
> ~/Documents/imgs always return "do not exists". But full path: 
> "/home/dima/Documents/imgs" is "Dir exists".
>
> Why? It's same paths!

~ is expanded by your shell. It is not a relative path, and 
system calls do not recognize it (same with environmental 
variables).

See also 
http://stackoverflow.com/questions/3616595/why-mkdir-fails-to-work-with-tilde