X-Git-Url: https://fleuret.org/cgi-bin/gitweb/gitweb.cgi?a=blobdiff_plain;f=finddup.1;h=62ab0b878c2410dff0b0ae3835c30f84129fd315;hb=ad1b1b341fdfabc708e174cbc29006988b1df342;hp=c86df1ea89daff89f228e2a87944407689e4ebb1;hpb=2e218d38854bc5934f3935bc7aa6eab598770bdb;p=finddup.git diff --git a/finddup.1 b/finddup.1 index c86df1e..62ab0b8 100644 --- a/finddup.1 +++ b/finddup.1 @@ -1,4 +1,4 @@ -.TH "FINDDUP" 1 "Mar 2010" "Francois Fleuret" "User Commands" +.TH "FINDDUP" "1.0" "Mar 2010" "Francois Fleuret" "User Commands" \" This man page was written by Francois Fleuret \" and is distributed under a Creative Commons Attribution-Share Alike @@ -10,12 +10,13 @@ finddup \- Find files common to two directories (or not) .SH "SYNOPSIS" -\fBfinddup\fP [OPTION]... DIR1 [[and:|not:]DIR2] +\fBfinddup\fP [OPTION]... [DIR1 [[and:|not:]DIR2]] .SH "DESCRIPTION" -With a single directory argument, \fBfinddup\fP prints the duplicated -files found in it. +With one directory as argument, \fBfinddup\fP prints the duplicated +files found in it. If no directory is provided, it uses the current +one as default. With two directories, it prints either the files common to both DIR1 and DIR2 or, with the `not:' prefix, the ones present in DIR1 and not @@ -71,10 +72,10 @@ file content. Here are the things I tried, which did not help at all: (1) Computing md5s on the whole files, which is not satisfactory because files are -often never read entirely hence the md5s can not be properly computed, -(2) computing XOR of the first 4, 16 and 256 bytes with rejection as -soon as one does not match, (3) reading parts of the files of -increasing sizes so that rejection could be done with a small fraction +often not read entirely, hence the md5s can not be properly computed, +(2) computing XORs of the first 4, 16 and 256 bytes with rejection as +soon as one does not match, (3) reading files in parts of increasing +sizes so that rejection could be done with only a small fraction read when possible, (4) using mmap instead of open/read. .SH "WISH LIST"