I have moved a file (results.txt) from source_path to destination_path, a path on the external hard disk, using the mv command in Mint18. After the moving was finished, I unplugged the disk to plug it to another system to check results.txt. However, the file exists neither in the destination_path nor in the source_path. Is the mv command run unsuccessfully and results.txt deleted? Is there any way to retrieve results.txt?