File: README.largefiles

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star 1.5a67-1
  • links: PTS
  • area: main
  • in suites: etch, etch-m68k
  • size: 5,600 kB
  • ctags: 4,715
  • sloc: ansic: 37,601; sh: 3,198; makefile: 200
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Note that the test tar archives used for this conformance test are bzip2
compressed. This has been done because it is the only widely available
compression format that allows to compress several gigabytes of nulls
into a few bytes.

A recent version of the files is always on:

	ftp://ftp.berlios.de/pub/star/testscripts/


The file 'ustar-big-2g.tar.bz2' contains a file with the largest size that
a historic tar implementation is able to understand.

star tvf ustar-big-2g.tar.bz2 
star: WARNING: Archive is bzip2 compressed, trying to use the -bz option.
2147483647 -rw-------  jes/glone Jun 15 16:53 2002 big
         0 -rw-r--r--  jes/glone Jun 15 16:53 2002 file
star: 209715 blocks + 4096 bytes (total of 2147485696 bytes = 2097154.00k).
star: Total time 104.572sec (20054 kBytes/sec)


The file 'ustar-big-8g.tar.bz2' contains a file with the largest size that
may be used with the ustar (POSIX.1-1990 tar) format.

star tvf ustar-big-8g.tar.bz2 
star: WARNING: Archive is bzip2 compressed, trying to use the -bz option.
8589934591 -rw-------  jes/glone Jun 15 17:08 2002 8gb-1
         0 -rw-r--r--  jes/glone Jun 15 16:53 2002 file
star: 838861 blocks + 0 bytes (total of 8589936640 bytes = 8388610.00k).
star: Total time 405.927sec (20665 kBytes/sec)

The file 'pax-big-10g.tar.bz2' contains a file with size 1 GB.
This file may only be represented using the new POSIX.1-2001 extended tar
format using extended headers. This extended archive format has been called
PAX.

star tvf pax-big-10g.tar.bz2 
star: WARNING: Archive is bzip2 compressed, trying to use the -bz option.
10737418240 -rw-------  jes/glone Jun 15 23:18 2002 10g
          0 -rw-r--r--  jes/glone Jun 15 16:53 2002 file
star: 1048576 blocks + 3072 bytes (total of 10737421312 bytes = 10485763.00k).
star: Total time 563.352sec (18613 kBytes/sec)

Only a POSIX.1-2001 conforming program will be able to read the archive
correctly. For now, June 2002 star seems to be the only POSIX.1-2001 conforming
TAR program.