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NetBSD 6.1.5 - man page for progress (netbsd section 1)

PROGRESS(1)			   BSD 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 stan-
     dard 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 output.

     -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.

     progress exits 0 on success.

     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), displaying a progress bar
     during the operation.

     ftp(1), strsuftoll(3)

     progress first appeared in NetBSD 1.6.1.  The dynamic progress bar display code is part of

     progress was written by John Hawkinson <jhawk@NetBSD.org>.  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.

BSD					   June 6, 2007 				      BSD

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