when you upload files in ASCII mode the file length changes depending on the os platform of the ftp server .  
 
The EOL (End of Line) marker is different across os platforms 
windows/dos = CR/LF 
unix = LF 
mac = CR 
 
If you want identical files you need to upload them in BINARY mode, however some text files may not work correctly when uploaded in BINARY mode.
		 
		
		
		
		
		
		
		
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