№1
$ pv rt94-171-06 | gzip > rt94-171-06.gz
128MB 0:00:15 [ 9.1MB/s] [=====>.....................] 18% ETA 0:01:07
№2
$ tar -czf - . | pv > out.tgz
21.9MB 0:00:15 [1.47MB/s] [...<=>.....................]
№3
$ tar -czf - . | pv -s $(du -sb | grep -o '[0-9]*') > out.tgz
44.3MB 0:00:27 [1.73MB/s] [>..........................] 0% ETA 13:36:22
№4
$ tar -cf - . | pv -cN tar -s $(du -sb | grep -o '[0-9]*') | gzip | pv -cN gzip > out.tgz
tar: 97.1MB 0:00:08 [12.3MB/s] [>......................] 0% ETA 1:50:26
gzip: 13.1MB 0:00:08 [1.6MB/s] [....<=>................]
№5
$ pv /dev/urandom > /dev/null
18MB 0:00:05 [ 3,6MB/s] [...<=>............................]
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