Pipe Viewer

Current version: 1.4.6 [src] [srpm] [rpm] [rpm64]

pv - Pipe Viewer - is a terminal-based tool for monitoring the progress of data through a pipeline. It can be inserted into any normal pipeline between two processes to give a visual indication of how quickly data is passing through, how long it has taken, how near to completion it is, and an estimate of how long it will be until completion.

Additional support is available for multiple instances working in tandem, to given a visual indicator of relative throughput in a complex pipeline:

Source for all systems and RPMs for RPM-based i386 systems are available in the download area.

Comments, bug reports, and patches can be sent using the Contact Form.

Packages and ports

News

1.4.6 - 22 January 2013

• added patch from Pawel Piatek to omit O_NOFOLLOW in AIX

1.4.5 - 10 January 2013

• updated manual page to show known problem with "-R" on Cygwin

1.4.4 - 11 December 2012

• added debugging, see "pv -h" when configure run with "--enable-debugging"
• rewrote cursor positioning code used when IPC is unavailable (Cygwin)
• fixed cursor positioning cursor read answerback problem (Cygwin/Solaris)
• fixed bug causing crash when progress displayed with too-small terminal

1.4.0 - 6 December 2012

• new option --skip-errors commissioned by Jim Salter
• if stdout is a block device, and we don't know the total size, use the size of that block device as the total (Peter Samuelson)
• new option --stop-at-size to stop after --size bytes
• report correct filename on read errors
• fix use-after-free bug in remote PID cleanup code
• refactored large chunks of code to make it more readable and to replace most static variables with a state structure

1.3.9 - 5 November 2012

• allow --format parameters to be sent with --remote
• configure option --disable-ipc
• added tests for --numeric with --timer and --bytes
• added tests for --remote

1.3.8 - 29 October 2012

• new --pidfile option to save process ID to a file
• integrated patch for --numeric with --timer and --bytes (Sami Liedes)
• removed signalling from --remote to prevent accidental process kills
• new --format option (originally Vladimir Pal / Vladimir Ermakov)

(23 July 2012)

• Christian Franke reports that PV is available in Cygwin.

1.3.4 - 27 June 2012

• new --disable-splice configure script option
• fixed line mode size count with multiple files (Moritz Barsnick)
• fixes for AIX core dumps (Pawel Piatek)

1.3.1 - 9 June 2012

• do not use splice() if the write buffer is not empty (Thomas Rachel)
• added test 15 (pipe transfers), and new test script

1.3.0 - 5 June 2012

This version had a bug in splice() handling which could in some circumstances corrupt data. Use 1.3.1 or newer.

• added Tiger build patch from Olle Jonsson
• fix 1024-boundary display garble (Debian bug #586763)
• use splice(2) where available (Debian bug #601683)
• added known bugs section of the manual page
• fixed average rate test, 12 (Andrew Macheret)
• use IEEE1541 units (Thomas Rachel)
• bug with rate limit under 10 fixed (Henry Precheur)
• speed up PV line mode (patch: Guillaume Marcais)
• remove LD=ld from vars.mk to fix cross-compilation (paintitgray/PV#1291)

(19 July 2011)

• AIX RPM supplied by Pawel Piatek (see downloads)

1.2.0 - 14 December 2010

• integrated improved SI prefixes and --average-rate (Henry Gebhardt)
• return nonzero if exiting due to SIGTERM (Martin Baum)
• patch from Phil Rutschman to restore terminal properly on exit
• fix i18n especially for --help (Sebastian Kayser)
• refactored pv_display
• we now have a coherent, documented, exit status
• modified pipe test and new cksum test from Sebastian Kayser
• default CFLAGS to just "-O" for non-GCC (Kjetil Torgrim Homme)
• LFS compile fix for OS X 10.4 (Alexandre de Verteuil)
• remove DESTDIR / suffix (Sam Nelson, Daniel Pape)
• fixed potential NULL deref in transfer (Elias Pipping / LLVM/Clang)

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This software is OSI Certified Open Source Software. OSI Certified is a certification mark of the Open Source Initiative.