PROGRESS(1)             NetBSD General Commands Manual             PROGRESS(1)

     progress -- feed input to a command, displaying a progress bar

     progress [-ez] [-b buffersize] [-f file] [-l length] [-p prefix] cmd
              [args ...]

     The progress utility opens a pipe to cmd and feeds an input stream into
     it, while displaying a progress bar to standard output.  If no filename
     is specified, progress reads from standard input.  Where feasible,
     progress fstat(2)s the input to determine the length, so a time estimate
     can be calculated.

     If no length is specified or determined, progress simply displays a count
     of the data and the data rate.

     The options are as follows:

     -b buffersize
                  Read in buffers of the specified size (default 64k).  An
                  optional suffix (per strsuftoll(3)) may be given.

     -e           Display progress to standard error instead of standard out-

     -f file      Read from the specified file instead of standard input.

     -l length    Use the specified length for the time estimate, rather than
                  attempting to fstat(2) the input.  An optional suffix (per
                  strsuftoll(3)) may be given.

     -p prefix    Print the given ``prefix'' text before (left of) the
                  progress bar.

     -z           Filter the input through gunzip(1).  If -f is specified,
                  calculate the length using gzip -l.

     The progress utility exits 0 on success, and >0 if an error occurs.

     The command
           progress -zf file.tar.gz tar xf -
     will extract the file.tar.gz displaying the progress bar as time passes:

       0% |                               |     0        0.00 KiB/s    --:-- ETA
      40% |********                       |   273 KiB  271.95 KiB/s    00:01 ETA
      81% |***********************        |   553 KiB  274.61 KiB/s    00:00 ETA
     100% |*******************************|   680 KiB  264.59 KiB/s    00:00 ETA

     If it is preferred to monitor the progress of the decompression process
     (unlikely), then
           progress -f file.tar.gz tar zxf -
     could be used.

     The command
           dd if=/dev/rwd0d ibs=64k | \
           progress -l 120g dd of=/dev/rwd1d obs=64k
     will copy the 120 GiB disk wd0 (/dev/rwd0d) to wd1 (/dev/rwd1d), display-
     ing a progress bar during the operation.

     ftp(1), strsuftoll(3)

     progress first appeared in NetBSD 1.6.1.  The dynamic progress bar dis-
     play code is part of ftp(1).

     progress was written by John Hawkinson <>.  ftp(1)'s
     dynamic progress bar was written by Luke Mewburn.

     Since the progress bar is displayed asynchronously, it may be difficult
     to read some error messages, both those produced by the pipeline, as well
     as those produced by progress itself.

NetBSD 6.0                       June 6, 2007                       NetBSD 6.0

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