gnutar

Langue: en

Version: 04/09/26 (mandriva - 22/10/07)

Section: 1 (Commandes utilisateur)

NAME

gnutar - emulates the GNU version of the tar archiver

SYNOPSIS

gnutar  command [ options ] file1 ... filen

DESCRIPTION

This manual page documents the GNU version of tar, an archiving program designed to store and extract files from an archive file known as a tarfile. A tarfile may be made on a tape drive, however, it is also common to write a tarfile to a normal file. The first argument to gnutar must be one of the options: Acdrtux, followed by any optional functions. The final arguments to gnutar are the names of the files or directories which should be archived. The use of a directory name always implies that the subdirectories below should be included in the archive.

COMMAND

One of the following commands must be used:
-A, --catenate, --concatenate
append tar files to an archive
-c, --create
create a new archive
-d, --diff, --compare
find differences between archive and file system
--delete
delete from the archive (not for use on mag tapes!)
-r, --append
append files to the end of an archive
-t, --list
list the contents of an archive
-u, --update
only append files that are newer than copy in archive
-x, --extract, --get
extract files from an archive

OPTIONS

--atime-preserve       
don't change access times on dumped files
-b, --block-size N   
block size of Nx512 bytes (default N=20)
-B, --read-full-blocks
reblock as we read (for reading 4.2BSD pipes)
-C, --directory DIR  
change to directory DIR
--checkpoint            
print directory names while reading the archive
-f, --file [HOSTNAME:]F      
use archive file or device F (default /dev/rmt0)
--force-local           
archive file is local even if has a colon
-F, --info-script F, --new-volume-script F
run script at end of each tape (implies -M)
-G, --incremental
create/list/extract old GNU-format incremental backup
-g, --listed-incremental F
create/list/extract new GNU-format incremental backup
-h, --dereference
don't dump symlinks; dump the files they point to
-i, --ignore-zeros
ignore blocks of zeros in archive (normally mean EOF)
-j, --bzip
filter the archive through bzip2.
--ignore-failed-read    
don't exit with non-zero status on unreadable files
-k, --keep-old-files
keep existing files; don't overwrite them from archive
-K, --starting-file F
begin at file F in the archive
-l, --one-file-system
stay in local file system when creating an archive
-L, --tape-length N
change tapes after writing N*1024 bytes
-m, --modification-time
don't extract file modified time
-M, --multi-volume
create/list/extract multi-volume archive
-N, --after-date DATE, --newer DATE
only store files newer than DATE
-o, --old-archive, --portability
write a V7 format archive, rather than ANSI format
-O, --to-stdout
extract files to standard output
-p, --same-permissions, --preserve-permissions
extract all protection information
-P, --absolute-paths
don't strip leading `/'s from file names
--preserve              
like
-p -s.
-R, --record-number
show record number within archive with each message
--remove-files          
remove files after adding them to the archive
-s, --same-order, --preserve-order
list of names to extract is sorted to match archive
--same-owner
create extracted files with the same ownership
-S, --sparse
handle sparse files efficiently
-T, --files-from= F  
get names to extract or create from file F
--null                  
-T reads null-terminated names, disable -C
--totals
print total bytes written with --create
-v, --verbose
verbosely list files processed
-V, --label NAME
create archive with volume name NAME
--version               
print
gnutar program version number
-w, --interactive, --confirmation
ask for confirmation for every action
-W, --verify
attempt to verify the archive after writing it
--exclude FILE         
exclude file FILE
-X, --exclude-from FILE      
exclude files listed in FILE
-Z, --compress, --uncompress
filter the archive through compress
-z, --gzip, --ungzip
filter the archive through gzip
--use-compress-program PROG
filter the archive through PROG (which must accept -d)

EXTENDED OPTIONS

The extended options are options taken from star.

--help
Prints a summary of the most important options for gnutar(1) and exits.
--xhelp
Prints a summary of the less important options for gnutar(1) and exits.
--version
Prints the gnutar version number string and exists.
--debug
print additional debug messages
xdebug=#
xd=#
set extended debug level
-/
don't strip leading '/'s from file names
-..
don't skip filenames that contain '..' in non-interactive extract
--secure-links
don't extract links that start with '/' or contain '..'
--acl
handle access control lists
--xfflags
handle extended file flags
bs=#
set (output) block size to #
fs=#
set fifo size to #
--no-fsync
do not call fsync() for each extracted file (may be dangerous)
--time

 print timing info
--no-statistics
do not print statistics
--fifostats
print fifo statistics
--no-fifo
don't use a fifo to optimize data flow from/to tape
--numeric
don't use user/group name from tape

The options above are not defined by GNU tar.

For a complete documentation of the star based optione check star(1).

EXAMPLES

ENVIRONMENT

FILES

SEE ALSO

spax(1), suntar(1), scpio(1), tar(1), cpio(1), pax(1), rcp(1), mt(1), rmt(1), match(1), dd(1), sdd(1), rsh(1), ssh(1), star(1), star(4/5), rcmd(3), fssnap(1m)

DIAGNOSTICS

NOTES

This gnutar implementation is based on the star implementation and does not implement all features of the original GNU tar program.

BUGS

AUTHOR

 Joerg Schilling
 Seestr. 110
 D-13353 Berlin
 Germany
 

Mail bugs and suggestions to:

schilling@fokus.fraunhofer.de or js@cs.tu-berlin.de or joerg@schily.isdn.cs.tu-berlin.de