Final answer:
To determine if a file is successfully copied to a destination system, look for a confirmation message, verify the presence of the file with correct size and timestamp in the destination directory, or check transfer logs. For ensuring data integrity, a checksum or hash comparison can confirm the file has been copied accurately.
Step-by-step explanation:
To tell if a file is copied to a destination system, there are several indicators you might look for. A clear sign is a confirmation message from the file transfer interface, whether it's a graphical user interface (GUI) or a command-line interface (CLI). In a GUI, this is often a progress bar that fills up and then a message that says 'Copy completed' or something similar. In a CLI, a command like cp on Unix-based systems or copy on Windows will return to the prompt without an error, which usually indicates success.
Another way to verify is by checking the destination directory and ensuring that the file appears there with the expected file size and timestamps. Many operating systems also provide file transfer logs or a history feature, allowing users to confirm the transfer status of files. Lastly, for critical transfers, some prefer to perform a checksum or hash comparison between the source and destination files to guarantee integrity.