Content-type: text/html Manpage of TAR


Section: User Commands (1)
Updated: February 2005
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A tar (tape archiver) program.  


tar [OPTION...] [FILE]...  


GNU `tar' saves many files together into a single tape or disk archive, and can restore individual files from the archive.  


tar -cf archive.tar foo bar
# Create archive.tar from files foo and bar.
tar -tvf archive.tar
# List all files in archive.tar verbosely.
tar -xf archive.tar
# Extract all files from archive.tar.
Main operation mode:
-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 from the archive (not 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 newer than copy in archive
-x, --extract, --get
extract files from an archive
Operation modifiers:
-g, --listed-incremental=FILE
handle new GNU-format incremental backup
-G, --incremental
handle old GNU-format incremental backup
do not exit with nonzero on unreadable files
-k, --keep-old-files
don't replace existing files when extracting
don't replace existing files that are newer than their archive copies
preserve metadata of existing directories
-n, --seek
Archive is seekable
process only the NUMth occurrence of each file in the archive. This option is valid only in conjunction with one of the subcommands --delete, --diff, --extract or --list and when a list of files is given either on the command line or via -T option. NUMBER defaults to 1.
overwrite existing files when extracting
-O, --to-stdout
extract files to standard output
empty hierarchies prior to extracting directory
remove files after adding them to the archive
-S, --sparse
handle sparse files efficiently
-U, --unlink-first
remove each file prior to extracting over it
-W, --verify
attempt to verify the archive after writing it
Handling of file attributes:
don't change access times on dumped files
force NAME as group for added files
force (symbolic) mode CHANGES for added files
-m, --touch
don't extract file modified time
extract files as yourself
do not extract permissions information
always use numbers for user/group names
force NAME as owner for added files
-p, --preserve-permissions, --same-permissions
extract permissions information
same as both -p and -s
try extracting files with the same ownership
-s, --preserve-order, --same-order
sort names to extract to match archive
Device selection and switching:
-f, --file=ARCHIVE
use archive file or device ARCHIVE
archive file is local even if has a colon
-F, --info-script=NAME, --new-volume-script=NAME
run script at end of each tape (implies -M)
-L, --tape-length=NUMBER
change tape after writing NUMBER x 1024 bytes
-M, --multi-volume
create/list/extract multi-volume archive
use given rmt COMMAND instead of rmt
use remote COMMAND instead of rsh
use/update the volume number in FILE
Device blocking:
-b, --blocking-factor=BLOCKS
BLOCKS x 512 bytes per record
-B, --read-full-records
reblock as we read (for 4.2BSD pipes)
-i, --ignore-zeros
ignore zeroed blocks in archive (means EOF)
SIZE bytes per record, multiple of 512
Archive format selection:
-H, --format=FORMAT
create archive of the given format.
FORMAT is one of the following:
GNU tar 1.13.x format
GNU format as per tar <= 1.12
POSIX 1003.1-2001 (pax) format
Same as pax
POSIX 1003.1-1988 (ustar) format
old V7 tar format
-j, --bzip2
filter the archive through bzip2
--old-archive, --portability
same as --format=v7
--pax-option=keyword[[:]=value][,keyword[[:]=value], ...]
control pax keywords
same as --format=posix
filter through PROG (must accept -d)
-V, --label=TEXT
create archive with volume name NAME. At list/extract time, use TEXT as a globbing pattern
-z, --gzip, --gunzip, --ungzip
filter the archive through gzip
-Z, --compress, --uncompress
filter the archive through compress
Local file selection:
same as -N
exclude patterns match file name start
backup before removal, choose version CONTROL
-C, --directory=DIR
change to directory DIR
exclude files, given as a PATTERN
exclude directories containing a cache tag
-h, --dereference
dump instead the files symlinks point to
exclusion ignores case
-K, --starting-file=MEMBER-NAME
begin at member MEMBER-NAME in the archive
compare date and time when data changed only
exclude patterns match after any / (default)
exclusion is case sensitive (default)
avoid descending automatically in directories
exclude patterns are plain strings
exclude pattern wildcards do not match '/'
--null -T reads null-terminated names, disable -C
-N, --newer=DATE-OR-FILE
only store files newer than DATE-OR-FILE
stay in local file system when creating archive
-P, --absolute-names
don't strip leading `/'s from file names
recurse into directories (default)
strip NUMBER leading components from file names
backup before removal, override usual suffix ('~' unless overridden by environment variable SIMPLE_BACKUP_SUFFIX
-T, --files-from=FILE-OF-NAMES
get names to extract or create from file NAME
exclude patterns use wildcards (default)
exclude pattern wildcards match '/' (default)
-X, --exclude-from=FILE
exclude patterns listed in FILE
Informative output:
display progress messages every 10th record
-v, --verbose
verbosely list files processed
print a message if not all links are dumped
send verbose output to FILE
-R, --block-number
show block number within archive with each message
Show tar defaults
When listing or extracting, list each directory that does not match search criteria
print total bytes written while creating archive
print file modification dates in UTC
-w, --interactive, --confirmation
ask for confirmation for every action
Compatibility options:
when creating, same as --old-archive. When extracting, same as --no-same-owner
Other options:
-?, --help
Give this help list
Print license and exit
Give a short usage message
Print program version

Mandatory or optional arguments to long options are also mandatory or optional for any corresponding short options.

The backup suffix is `~', unless set with --suffix or SIMPLE_BACKUP_SUFFIX. The version control may be set with --backup or VERSION_CONTROL, values are:

t, numbered
make numbered backups
nil, existing
numbered if numbered backups exist, simple otherwise
never, simple
always make simple backups

*This* tar defaults to: --format=gnu -f- -b20 --rmt-command=/sbin/rmt --rsh-command=/usr/bin/rsh  


Report bugs to <>.  


The full documentation for tar is maintained as a Texinfo manual. If the info and tar programs are properly installed at your site, the command
info tar

should give you access to the complete manual.




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Time: 00:35:37 GMT, August 11, 2010