root@monkey:/home/code/bookproject/books# pv -h
Usage: pv [OPTION] [FILE]...
Concatenate FILE(s), or standard input, to standard output,
with monitoring.

  -p, --progress         show progress bar
  -t, --timer            show elapsed time
  -e, --eta              show estimated time of arrival (completion)
  -r, --rate             show data transfer rate counter
  -b, --bytes            show number of bytes transferred
  -f, --force            output even if standard error is not a terminal
  -n, --numeric          output percentages, not visual information
  -q, --quiet            do not output any transfer information at all
  -c, --cursor           use cursor positioning escape sequences
  -L, --rate-limit RATE  limit transfer to RATE bytes per second
  -W, --wait             display nothing until first byte transferred
  -s, --size SIZE        set estimated data size to SIZE bytes
  -i, --interval SEC     update every SEC seconds
  -w, --width WIDTH      assume terminal is WIDTH characters wide
  -H, --height HEIGHT    assume terminal is HEIGHT rows high
  -N, --name NAME        prefix visual information with NAME

  -h, --help             show this help and exit
  -l, --license          show the license this program is distributed under
  -V, --version          show version information and exit

Please report any bugs to Andrew Wood <andrew.wood@ivarch.com>.