ubuntu@ubuntu:~$ script
Script started, file is typescript
ubuntu@ubuntu:~$ exit
exit
Script done, file is typescript
ubuntu@ubuntu:~$ script
Script started, file is typescript
ubuntu@ubuntu:~$ time sudo ddrescue -f /dev/sda /dev/sdb
GNU ddrescue 1.23
Press Ctrl-C to interrupt
     ipos:    5532 MB, non-trimmed:        0 B,  current rate:    116 MB/s
     opos:    5532 MB, non-scraped:        0 B,  average rate:    112 MB/s
non-tried:  494575 MB,  bad-sector:        0 B,    error rate:       0 B/s
  rescued:    5532 MB,   bad areas:        0,        run time:         49s
pct rescued:    1.10%, read errors:        0,  remaining time:      1h 12m
                              time since last successful read:          0s
Copying non-tried blocks... Pass 1 (forwards)