send DD a signal to print its progress
50225664 bytes (50 MB) copied, 16.5392 seconds, 3.0 MB/s 98098+0 records in 98097+0 records out 50225664 bytes (50 MB) copied, 16.5344 seconds, 3.0 MB/s 104185+0 records in4MB/s] 104185+0 records out 53342720 bytes (53 MB) copied, 17.548 seconds, 3.0 MB/s 104186+0 records in 104185+0 records out 53342720 bytes (53 MB) copied, 17.5432 seconds, 3.0 MB/s 110078+0 records in9MB/s] 110078+0 records out 56359936 bytes (56 MB) copied, 18.5567 seconds, 3.0 MB/s 110079+0 records in 110078+0 records out 56359936 bytes (56 MB) copied, 18.552 seconds, 3.0 MB/s
2 Alternatives + Submit Alt
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Sends the "USR1" signal every 1 second (-n 1) to a process called exactly "dd". The signal in some systems can be INFO or SIGINFO ... look at the signals list in: man kill
2watch -n 1 pkill -USR1 "^dd$" -
1. Sends an email to announce the start of the command 2. Raw data copy of block device over ssh to a new host 3. Sends an email to announce the end of the command Make sure the lvm device at the other side exists and has the same amount of logical units.
0echo "dd start" | mail -s ready pete@example.com; dd if=/dev/system/machine-disk | ssh -c blowfish root@destination.example.com dd of=/dev/system/machine-disk ; echo "dd ready" | mail -s ready pete@example.com
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Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?
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while killall -USR1 dd; do sleep 1; donebecause then the while loop stops if there is no dd process any more.