Each of the commands deletes the original file. The commands gunzip and uncompress cause a permanent extraction of files. If this is not wished, use the command zcat , instead. This command uncompresses the packed file and directs the content to the stdout channel. FTP is the most versatile and secure file transferring program.
Different computers have different default modes.
In order to overcome this problem, give the command binary before starting file tranferring. FTP is started by giving the command ftp computer after which the program asks the password. The files are transferred between the local and the remote directories using the commands put and get . By default, FTP asks separately for the permission to transfer each file. This feature can be omitted by giving the command prompt before the first transfer.