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GNU ddrescue 1.10-rc2 (Development branch)
01-28-2009
GNU ddrescue is a data recovery tool. It copiesdata from one file or block device (hard disc,cdrom, etc) to another, trying hard to rescue datain case of read errors. GNU ddrescue does nottruncate the output file if not asked to. So,every time you run it on the same output file, ittries to fill in the gaps. The basic operation ofGNU ddrescue is fully automatic. That is, youdon't have to wait for an error, stop the program,read the log, run it in reverse mode, etc. If youuse the logfile feature of GNU ddrescue, the datais rescued very efficiently (only the needed blocks are read). Also you can interrupt the rescue at any time and resume it later at the same point.License: GNU General Public License v3Changes:|
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SUM(1) User Commands SUM(1) NAME
sum - checksum and count the blocks in a file SYNOPSIS
sum [OPTION]... [FILE]... DESCRIPTION
Print checksum and block counts for each FILE. -r use BSD sum algorithm, use 1K blocks -s, --sysv use System V sum algorithm, use 512 bytes blocks --help display this help and exit --version output version information and exit With no FILE, or when FILE is -, read standard input. AUTHOR
Written by Kayvan Aghaiepour and David MacKenzie. REPORTING BUGS
Report sum bugs to bug-coreutils@gnu.org GNU coreutils home page: <http://www.gnu.org/software/coreutils/> General help using GNU software: <http://www.gnu.org/gethelp/> COPYRIGHT
Copyright (C) 2009 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO
The full documentation for sum is maintained as a Texinfo manual. If the info and sum programs are properly installed at your site, the command info coreutils 'sum invocation' should give you access to the complete manual. GNU coreutils 7.1 July 2010 SUM(1)