Use pv as pipe to turn the progress bar on for dd command. It will indicate how close to completion the transfer is and it will also show current write/read speed in MB/s.
Read answer to: "Linux dd Command Show Progress Copy Bar With Status"
Linux dd Command Show Progress Copy Bar With Status 
Rsync Show Progress Bar While Copying Files
Linux / UNIX find the smallest directories or files in current directory 
Bash Shell: Check If A Function Exists Or Not (Find Out If a Function Is Defined Or Not)
FreeBSD or BSD reboot and shutdown systemLinux / Unix: Rsync Resume Partially Downloaded Files 
Linux / Unix rsync: Delete Source File After Transfer
Linux Setting up a software RAID1 system for a complete mirror
Can’t re-open pipe to command substitution (fd 4): No child processes error and solution
xargs: How To Control and Use Command Line Arguments
Comments on this FAQ are closed. If you'd like to continue the discussion on this topic, you can do so at our forum.