PARAGET(1) User Contributed Perl Documentation PARAGET(1)NAMEparaget - parallel file get
SYNOPSISparaget [options] --mirror-set name filepath
EXAMPLESparaget--mirror-set cpan modules/by-module/XML/XML-Parser-2.29.tar.gz
DESCRIPTIONparaget implements getting a single file in parallel from different
mirror sites.
The first time you run paraget, it will download a list of mirrors for
various mirror-sets, such as CPAN and Debian from paraget's anonymous
FTP space.
ARGUMENTS
filepath
Path to a file underneath the root of a mirrored tree.
--mirror-set name
Name of a mirror set. See ".paraget/mirror-sets/"" in "~ for more
information.
OPTIONS--size filesize
In order to eliminate the step of determining the filesize of the
file to retrieve, one can pass it in as an argument. This is most
likely to be used if paraget is called in an automated fashion.
--tmpdir directory
Use directory for temporary files. Falls back to $TMPDIR, then
/tmp.
PERFORMANCE TIPS
In order to use the best mirrors for you, you should remove what you
think are probably bad mirrors in your mirror-sets-files, those in
~/.paraget/mirror-sets/.
HEURISTIC
Currently, the heuristic paraget uses to choose how to assign servers
to intervals is done by assigning the fastest server to the interval
that is taking the longest to complete.
FILES
~/.paraget/mirror-sets/
The default directory for finding mirror sets. Underneath this
should be files named as mirror sets, which each file containing a
list of URL's that are mirrors for a particular tree. Lines can be
commented out using hash-marks (#).
Examples
This could be for CPAN: ~/.paraget/mirror-sets/cpan:
ftp://ftp.cpan.org/pub/CPAN
ftp://download.sourceforge.net/pub/mirrors/CPAN
TODO
Persistent statistics
Implement persistent records-keeping, so that the speed of servers is
remembered across sessions. Perhaps this could be offered as an
online-service, so that each paraget install would not have to learn it
on its own.
Heuristic tweaking/modularity
The heuristics that paraget uses are very hokey.
HTTP support
Currently, only FTP is supported; HTTP supports GET's with a file
offset, so we should be able to add this easily.
KNOWN BUGS
Intervals sometimes have negative intervals; parget dies horribly.
Sometimes doesn't complete getting a file; stalls near the end. Just
give up and kill paraget. We're very sorry.
Currently, we leave a dirty mess in the temporary directory. This
could be used if we implemented re-getting of files, but since we
don't, we should clean up after ourselves.
ABOUT
The homepage of this program is http://paraget.sourceforge.net/
COPYRIGHT
Copyright (C) 2000,2001 Lars Clausen <lrclause@uiuc.edu> and Frank J.
Tobin <ftobin@uiuc.edu>
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, visit the following URL:
http://www.gnu.org/copyleft/gpl.html
perl v5.20.2 2001-05-10 PARAGET(1)
