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Diffstat (limited to 'doc/ztest.1')
| -rw-r--r-- | doc/ztest.1 | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/doc/ztest.1 b/doc/ztest.1 index 3311667..252489b 100644 --- a/doc/ztest.1 +++ b/doc/ztest.1 @@ -1,7 +1,7 @@ .\" DO NOT MODIFY THIS FILE! It was generated by help2man 1.46.1. -.TH ZTEST "1" "May 2016" "ztest (zutils) 1.5" "User Commands" +.TH ZTEST "1" "April 2017" "ztest (zutils) 1.6" "User Commands" .SH NAME -ztest \- verify integrity of compressed files +ztest \- verify the integrity of compressed files .SH SYNOPSIS .B ztest [\fI\,options\/\fR] [\fI\,files\/\fR] @@ -14,8 +14,12 @@ compression format. .PP The supported formats are bzip2, gzip, lzip and xz. .PP -Note that some xz files lack integrity information, and therefore can't -be verified as reliably as the other formats can. +Note that error detection in the xz format is broken. First, some xz +files lack integrity information. Second, not all xz decompressors can +verify the integrity of all xz files. Third, section 2.1.1.2 'Stream +Flags' of the xz format specification allows xz decompressors to produce +garbage output without issuing any warning. Therefore, xz files can't +always be verified as reliably as files in the other formats can. .PP Exit status is 0 if all compressed files verify OK, 1 if environmental problems (file not found, invalid flags, I/O errors, etc), 2 if any @@ -62,7 +66,7 @@ Report bugs to zutils\-bug@nongnu.org .br Zutils home page: http://www.nongnu.org/zutils/zutils.html .SH COPYRIGHT -Copyright \(co 2016 Antonio Diaz Diaz. +Copyright \(co 2017 Antonio Diaz Diaz. License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl.html> .br This is free software: you are free to change and redistribute it. |