par2 man page

par2 — PAR 2.0 compatible file verification and repair tool.

Synopsis

par2 c|v|r [options] <par2 file> [files]

par2 c(reate) [options] <par2 file> [files]
par2 v(erify) [options] <par2 file> [files]
par2 r(epair) [options] <par2 file> [files]

Also:
par2create [options] <par2 file> [files]
par2verify [options] <par2 file> [files]
par2repair [options] <par2 file> [files]

Description

par2cmdline is a program for creating and using PAR2 files to detect damage in data files and repair them if necessary. It can be used with any kind of file.

Options

-h
Show this help
-V
Show version
-VV
Show version and copyright
-a <file>
Set the main par2 archive name; required on create, optional for verify and repair
-b<n>
Set the Block‐Count
-s<n>
Set the Block‐Size (don't use both -b and -s)
-r<n>
Level of redundancy (percentage)
-r<c><n>
Redundancy target size, <c>=g(iga),m(ega),k(ilo) bytes
-c<n>
Recovery block count (don't use both -r and -c)
-f<n>
First Recovery‐Block‐Number
-u
Uniform recovery file sizes
-l
Limit size of recovery files (don't use both -u and -l)
-n<n>
Number of recovery files (don't use both -n and -l)
-m<n>
Memory (in MB) to use
-t<n>
Number of threads to use (Auto-detected)
-v [-v]
Be more verbose
-q [-q]
Be more quiet (-qq gives silence)
-p
Purge backup files and par files on successful recovery or when no recovery is needed
-R
Recurse into subdirectories (only useful on create)
-N
No data skipping (find badly mispositioned data blocks)
-S<n>
Skip leaway (distance +/- from expected block position)
--
Treat all remaining command line as filenames

Authors

Peter Brian Clements <peterbclements@users.sourceforge.net>
Marcel Partap <mpartap@gmx.net>
Ike Devolder <ike.devolder@gmail.com>
par2cmdline-mt: Jussi Kansanen <jussi.kansanen@gmail.com>

Referenced By

bup-damage(1), bup-fsck(1).

may 2015 0.6.14 Parity archive utils