diff options
| author | Tomas Bzatek <tbzatek@redhat.com> | 2023-12-17 16:55:58 +0100 |
|---|---|---|
| committer | Tomas Bzatek <tbzatek@redhat.com> | 2023-12-17 16:55:58 +0100 |
| commit | b22a4476a66a913a07d5e80334c0400a9b162206 (patch) | |
| tree | d896eb5f6f9212b5ef424219c45571ce5f152cc0 /libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html | |
| parent | 7592788feb1a8cb79b85e6a9911a206a5d55896d (diff) | |
| download | tuxcmd-modules-b22a4476a66a913a07d5e80334c0400a9b162206.tar.xz | |
libarchive: Remove in-tree libarchive package
Libarchive has become a standard package in most distributions,
no need to carry the sources along here.
Diffstat (limited to 'libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html')
| -rw-r--r-- | libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html | 1014 |
1 files changed, 0 insertions, 1014 deletions
diff --git a/libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html b/libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html deleted file mode 100644 index 3b84d21..0000000 --- a/libarchive/libarchive-2.8.0/doc/html/bsdtar.1.html +++ /dev/null @@ -1,1014 +0,0 @@ -<!-- Creator : groff version 1.19.2 --> -<!-- CreationDate: Thu Feb 4 20:36:40 2010 --> -<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" -"http://www.w3.org/TR/html4/loose.dtd"> -<html> -<head> -<meta name="generator" content="groff -Thtml, see www.gnu.org"> -<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> -<meta name="Content-Style" content="text/css"> -<style type="text/css"> - p { margin-top: 0; margin-bottom: 0; } - pre { margin-top: 0; margin-bottom: 0; } - table { margin-top: 0; margin-bottom: 0; } -</style> -<title></title> -</head> -<body> - -<hr> - - -<p valign="top">BSDTAR(1) FreeBSD General Commands Manual -BSDTAR(1)</p> - -<p style="margin-top: 1em" valign="top"><b>NAME</b></p> - -<p style="margin-left:8%;"><b>tar</b> — manipulate -tape archives</p> - - -<p style="margin-top: 1em" valign="top"><b>SYNOPSIS</b></p> - -<p style="margin-left:14%;"><b>tar</b> -[<i>bundled-flags </i>⟨</p> - -<p valign="top">args ⟩] [⟨ <i><br> -file</i> ⟩ | ⟨ <i><br> -pattern</i> ⟩ ...]</p> - -<p style="margin-left:14%;"><b>tar</b> {<b>−c</b>} -[<i>options</i>] -[<i>files </i>| <i>directories</i>] <b><br> -tar</b> {<b>−r </b>| <b>−u</b>} -<b>−f</b> <i>archive-file</i> [<i>options</i>] -[<i>files </i>| <i>directories</i>] <b><br> -tar</b> {<b>−t </b>| <b>−x</b>} -[<i>options</i>] [<i>patterns</i>]</p> - - -<p style="margin-top: 1em" valign="top"><b>DESCRIPTION</b></p> - -<p style="margin-left:8%;"><b>tar</b> creates and -manipulates streaming archive files. This implementation can -extract from tar, pax, cpio, zip, jar, ar, and ISO 9660 -cdrom images and can create tar, pax, cpio, ar, and shar -archives.</p> - -<p style="margin-left:8%; margin-top: 1em">The first -synopsis form shows a ‘‘bundled’’ -option word. This usage is provided for compatibility with -historical implementations. See COMPATIBILITY below for -details.</p> - -<p style="margin-left:8%; margin-top: 1em">The other -synopsis forms show the preferred usage. The first option to -<b>tar</b> is a mode indicator from the following list:</p> - -<p valign="top"><b>−c</b></p> - -<p style="margin-left:20%; margin-top: 1em">Create a new -archive containing the specified items.</p> - -<p valign="top"><b>−r</b></p> - -<p style="margin-left:20%; margin-top: 1em">Like -<b>−c</b>, but new entries are appended to the -archive. Note that this only works on uncompressed archives -stored in regular files. The <b>−f</b> option is -required.</p> - -<p valign="top"><b>−t</b></p> - -<p style="margin-left:20%; margin-top: 1em">List archive -contents to stdout.</p> - -<p valign="top"><b>−u</b></p> - -<p style="margin-left:20%; margin-top: 1em">Like -<b>−r</b>, but new entries are added only if they have -a modification date newer than the corresponding entry in -the archive. Note that this only works on uncompressed -archives stored in regular files. The <b>−f</b> option -is required.</p> - -<p valign="top"><b>−x</b></p> - -<p style="margin-left:20%; margin-top: 1em">Extract to disk -from the archive. If a file with the same name appears more -than once in the archive, each copy will be extracted, with -later copies overwriting (replacing) earlier copies.</p> - -<p style="margin-left:8%; margin-top: 1em">In -<b>−c</b>, <b>−r</b>, or <b>−u</b> mode, -each specified file or directory is added to the archive in -the order specified on the command line. By default, the -contents of each directory are also archived.</p> - -<p style="margin-left:8%; margin-top: 1em">In extract or -list mode, the entire command line is read and parsed before -the archive is opened. The pathnames or patterns on the -command line indicate which items in the archive should be -processed. Patterns are shell-style globbing patterns as -documented in tcsh(1).</p> - -<p style="margin-top: 1em" valign="top"><b>OPTIONS</b></p> - -<p style="margin-left:8%;">Unless specifically stated -otherwise, options are applicable in all operating -modes.</p> - - -<p style="margin-top: 1em" valign="top"><b>@</b><i>archive</i></p> - -<p style="margin-left:20%;">(c and r mode only) The -specified archive is opened and the entries in it will be -appended to the current archive. As a simple example,</p> - -<p style="margin-left:29%;"><b>tar −c −f</b> -<i>- newfile</i> <b>@</b><i>original.tar</i></p> - -<p style="margin-left:20%;">writes a new archive to -standard output containing a file <i>newfile</i> and all of -the entries from <i>original.tar</i>. In contrast,</p> - -<p style="margin-left:29%;"><b>tar −c −f</b> -<i>- newfile original.tar</i></p> - -<p style="margin-left:20%;">creates a new archive with only -two entries. Similarly,</p> - -<p style="margin-left:29%;"><b>tar −czf</b> <i>-</i> -<b>−-format pax @</b><i>-</i></p> - -<p style="margin-left:20%;">reads an archive from standard -input (whose format will be determined automatically) and -converts it into a gzip-compressed pax-format archive on -stdout. In this way, <b>tar</b> can be used to convert -archives from one format to another.</p> - -<p style="margin-top: 1em" valign="top"><b>−b</b> -<i>blocksize</i></p> - -<p style="margin-left:20%;">Specify the block size, in -512-byte records, for tape drive I/O. As a rule, this -argument is only needed when reading from or writing to tape -drives, and usually not even then as the default block size -of 20 records (10240 bytes) is very common.</p> - -<p style="margin-top: 1em" valign="top"><b>−C</b> -<i>directory</i></p> - -<p style="margin-left:20%;">In c and r mode, this changes -the directory before adding the following files. In x mode, -change directories after opening the archive but before -extracting entries from the archive.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-check-links</b></p> - -<p style="margin-left:20%;">(c and r modes only) Issue a -warning message unless all links to each file are -archived.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-chroot</b></p> - -<p style="margin-left:20%;">(x mode only) <b>chroot</b>() -to the current directory after processing any -<b>−C</b> options and before extracting any files.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-exclude</b> -<i>pattern</i></p> - -<p style="margin-left:20%;">Do not process files or -directories that match the specified pattern. Note that -exclusions take precedence over patterns or filenames -specified on the command line.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-format</b> -<i>format</i></p> - -<p style="margin-left:20%;">(c, r, u mode only) Use the -specified format for the created archive. Supported formats -include ‘‘cpio’’, -‘‘pax’’, -‘‘shar’’, and -‘‘ustar’’. Other formats may also be -supported; see libarchive-formats(5) for more information -about currently-supported formats. In r and u modes, when -extending an existing archive, the format specified here -must be compatible with the format of the existing archive -on disk.</p> - -<p style="margin-top: 1em" valign="top"><b>−f</b> -<i>file</i></p> - -<p style="margin-left:20%;">Read the archive from or write -the archive to the specified file. The filename can be -<i>-</i> for standard input or standard output. If not -specified, the default tape device will be used. (On -FreeBSD, the default tape device is <i>/dev/sa0</i>.)</p> - - -<p style="margin-top: 1em" valign="top"><b>−H</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c and r mode -only) Symbolic links named on the command line will be -followed; the target of the link will be archived, not the -link itself.</p> - - -<p style="margin-top: 1em" valign="top"><b>−h</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c and r mode -only) Synonym for <b>−L</b>.</p> - - -<p style="margin-top: 1em" valign="top"><b>−I</b></p> - -<p style="margin-left:20%; margin-top: 1em">Synonym for -<b>−T</b>.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-include</b> -<i>pattern</i></p> - -<p style="margin-left:20%;">Process only files or -directories that match the specified pattern. Note that -exclusions specified with <b>−-exclude</b> take -precedence over inclusions. If no inclusions are explicitly -specified, all entries are processed by default. The -<b>−-include</b> option is especially useful when -filtering archives. For example, the command</p> - -<p style="margin-left:29%;"><b>tar −c −f</b> -<i>new.tar</i> <b>−-include=’*foo*’ -@</b><i>old.tgz</i></p> - -<p style="margin-left:20%;">creates a new archive -<i>new.tar</i> containing only the entries from -<i>old.tgz</i> containing the string ‘foo’.</p> - - -<p style="margin-top: 1em" valign="top"><b>−j</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c mode only) -Compress the resulting archive with bzip2(1). In extract or -list modes, this option is ignored. Note that, unlike other -<b>tar</b> implementations, this implementation recognizes -bzip2 compression automatically when reading archives.</p> - - -<p style="margin-top: 1em" valign="top"><b>−k</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode only) -Do not overwrite existing files. In particular, if a file -appears more than once in an archive, later copies will not -overwrite earlier copies.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-keep-newer-files</b></p> - -<p style="margin-left:20%;">(x mode only) Do not overwrite -existing files that are newer than the versions appearing in -the archive being extracted.</p> - - -<p style="margin-top: 1em" valign="top"><b>−L</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c and r mode -only) All symbolic links will be followed. Normally, -symbolic links are archived as such. With this option, the -target of the link will be archived instead.</p> - - -<p style="margin-top: 1em" valign="top"><b>−l</b></p> - -<p style="margin-left:20%; margin-top: 1em">This is a -synonym for the <b>−-check-links</b> option.</p> - - -<p style="margin-top: 1em" valign="top"><b>−m</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode only) -Do not extract modification time. By default, the -modification time is set to the time stored in the -archive.</p> - - -<p style="margin-top: 1em" valign="top"><b>−n</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c, r, u modes -only) Do not recursively archive the contents of -directories.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-newer</b> -<i>date</i></p> - -<p style="margin-left:20%;">(c, r, u modes only) Only -include files and directories newer than the specified date. -This compares ctime entries.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-newer-mtime</b> -<i>date</i></p> - -<p style="margin-left:20%;">(c, r, u modes only) Like -<b>−-newer</b>, except it compares mtime entries -instead of ctime entries.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-newer-than</b> -<i>file</i></p> - -<p style="margin-left:20%;">(c, r, u modes only) Only -include files and directories newer than the specified file. -This compares ctime entries.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-newer-mtime-than</b> -<i>file</i></p> - -<p style="margin-left:20%;">(c, r, u modes only) Like -<b>−-newer-than</b>, except it compares mtime entries -instead of ctime entries.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-nodump</b></p> - -<p style="margin-left:20%;">(c and r modes only) Honor the -nodump file flag by skipping this file.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-null</b></p> - -<p style="margin-left:20%; margin-top: 1em">(use with -<b>−I</b>, <b>−T</b>, or <b>−X</b>) -Filenames or patterns are separated by null characters, not -by newlines. This is often used to read filenames output by -the <b>−print0</b> option to find(1).</p> - - -<p style="margin-top: 1em" valign="top"><b>−-numeric-owner</b></p> - -<p style="margin-left:20%;">(x mode only) Ignore symbolic -user and group names when restoring archives to disk, only -numeric uid and gid values will be obeyed.</p> - - -<p style="margin-top: 1em" valign="top"><b>−O</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x, t modes -only) In extract (-x) mode, files will be written to -standard out rather than being extracted to disk. In list -(-t) mode, the file listing will be written to stderr rather -than the usual stdout.</p> - - -<p style="margin-top: 1em" valign="top"><b>−o</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode) Use -the user and group of the user running the program rather -than those specified in the archive. Note that this has no -significance unless <b>−p</b> is specified, and the -program is being run by the root user. In this case, the -file modes and flags from the archive will be restored, but -ACLs or owner information in the archive will be -discarded.</p> - - -<p style="margin-top: 1em" valign="top"><b>−o</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c, r, u mode) -A synonym for <b>−-format</b> <i>ustar</i></p> - - -<p style="margin-top: 1em" valign="top"><b>−-one-file-system</b></p> - -<p style="margin-left:20%;">(c, r, and u modes) Do not -cross mount points.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-options</b> -<i>options</i></p> - -<p style="margin-left:20%;">Select optional behaviors for -particular modules. The argument is a text string containing -comma-separated keywords and values. These are passed to the -modules that handle particular formats to control how those -formats will behave. Each option has one of the following -forms:</p> - -<p valign="top"><i>key=value</i></p> - -<p style="margin-left:32%;">The key will be set to the -specified value in every module that supports it. Modules -that do not support this key will ignore it.</p> - -<p valign="top"><i>key</i></p> - -<p style="margin-left:32%; margin-top: 1em">The key will be -enabled in every module that supports it. This is equivalent -to <i>key</i><b>=1</b>.</p> - -<p valign="top"><i>!key</i></p> - -<p style="margin-left:32%; margin-top: 1em">The key will be -disabled in every module that supports it.</p> - -<p valign="top"><i>module:key=value</i>, <i>module:key</i>, -<i>module:!key</i></p> - -<p style="margin-left:32%;">As above, but the corresponding -key and value will be provided only to modules whose name -matches <i>module</i>.</p> - -<p style="margin-left:20%;">The currently supported modules -and keys are:</p> - -<p valign="top"><b>iso9660:joliet</b></p> - -<p style="margin-left:32%;">Support Joliet extensions. This -is enabled by default, use <b>!joliet</b> or -<b>iso9660:!joliet</b> to disable.</p> - -<p valign="top"><b>iso9660:rockridge</b></p> - -<p style="margin-left:32%;">Support Rock Ridge extensions. -This is enabled by default, use <b>!rockridge</b> or -<b>iso9660:!rockridge</b> to disable.</p> - -<p valign="top"><b>gzip:compression-level</b></p> - -<p style="margin-left:32%;">A decimal integer from 0 to 9 -specifying the gzip compression level.</p> - -<p valign="top"><b>xz:compression-level</b></p> - -<p style="margin-left:32%;">A decimal integer from 0 to 9 -specifying the xz compression level.</p> - -<p valign="top"><b>mtree:</b><i>keyword</i></p> - -<p style="margin-left:32%;">The mtree writer module allows -you to specify which mtree keywords will be included in the -output. Supported keywords include: <b>cksum</b>, -<b>device</b>, <b>flags</b>, <b>gid</b>, <b>gname</b>, -<b>indent</b>, <b>link</b>, <b>md5</b>, <b>mode</b>, -<b>nlink</b>, <b>rmd160</b>, <b>sha1</b>, <b>sha256</b>, -<b>sha384</b>, <b>sha512</b>, <b>size</b>, <b>time</b>, -<b>uid</b>, <b>uname</b>. The default is equivalent to: -‘‘device, flags, gid, gname, link, mode, nlink, -size, time, type, uid, uname’’.</p> - -<p valign="top"><b>mtree:all</b></p> - -<p style="margin-left:32%;">Enables all of the above -keywords. You can also use <b>mtree:!all</b> to disable all -keywords.</p> - -<p valign="top"><b>mtree:use-set</b></p> - -<p style="margin-left:32%;">Enable generation of -<b>/set</b> lines in the output.</p> - -<p valign="top"><b>mtree:indent</b></p> - -<p style="margin-left:32%;">Produce human-readable output -by indenting options and splitting lines to fit into 80 -columns.</p> - -<p valign="top"><b>zip:compression</b>=<i>type</i></p> - -<p style="margin-left:32%;">Use <i>type</i> as compression -method. Supported values are store (uncompressed) and -deflate (gzip algorithm).</p> - -<p style="margin-left:20%;">If a provided option is not -supported by any module, that is a fatal error.</p> - - -<p style="margin-top: 1em" valign="top"><b>−P</b></p> - -<p style="margin-left:20%; margin-top: 1em">Preserve -pathnames. By default, absolute pathnames (those that begin -with a / character) have the leading slash removed both when -creating archives and extracting from them. Also, <b>tar</b> -will refuse to extract archive entries whose pathnames -contain <i>..</i> or whose target directory would be altered -by a symlink. This option suppresses these behaviors.</p> - - -<p style="margin-top: 1em" valign="top"><b>−p</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode only) -Preserve file permissions. Attempt to restore the full -permissions, including owner, file modes, file flags and -ACLs, if available, for each item extracted from the -archive. By default, newly-created files are owned by the -user running <b>tar</b>, the file mode is restored for -newly-created regular files, and all other types of entries -receive default permissions. If <b>tar</b> is being run by -root, the default is to restore the owner unless the -<b>−o</b> option is also specified.</p> - -<p style="margin-top: 1em" valign="top"><b>−q</b> -(<b>−-fast-read</b>)</p> - -<p style="margin-left:20%;">(x and t mode only) Extract or -list only the first archive entry that matches each pattern -or filename operand. Exit as soon as each specified pattern -or filename has been matched. By default, the archive is -always read to the very end, since there can be multiple -entries with the same name and, by convention, later entries -overwrite earlier entries. This option is provided as a -performance optimization.</p> - - -<p style="margin-top: 1em" valign="top"><b>−S</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode only) -Extract files as sparse files. For every block on disk, -check first if it contains only NULL bytes and seek over it -otherwise. This works similiar to the conv=sparse option of -dd.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-strip-components</b> -<i>count</i></p> - -<p style="margin-left:20%;">(x mode only) Remove the -specified number of leading path elements. Pathnames with -fewer elements will be silently skipped. Note that the -pathname is edited after checking inclusion/exclusion -patterns but before security checks.</p> - -<p style="margin-top: 1em" valign="top"><b>−s</b> -<i>pattern</i></p> - -<p style="margin-left:20%;">Modify file or archive member -names according to <i>pattern</i>. The pattern has the -format <i>/old/new/</i>[gps] where <i>old</i> is a basic -regular expression, <i>new</i> is the replacement string of -the matched part, and the optional trailing letters modify -how the replacement is handled. If <i>old</i> is not -matched, the pattern is skipped. Within <i>new</i>, ~ is -substituted with the match, 1 to 9 with the content of the -corresponding captured group. The optional trailing g -specifies that matching should continue after the matched -part and stopped on the first unmatched pattern. The -optional trailing s specifies that the pattern applies to -the value of symbolic links. The optional trailing p -specifies that after a successful substitution the original -path name and the new path name should be printed to -standard error.</p> - -<p style="margin-top: 1em" valign="top"><b>−T</b> -<i>filename</i></p> - -<p style="margin-left:20%;">In x or t mode, <b>tar</b> will -read the list of names to be extracted from <i>filename</i>. -In c mode, <b>tar</b> will read names to be archived from -<i>filename</i>. The special name -‘‘-C’’ on a line by itself will -cause the current directory to be changed to the directory -specified on the following line. Names are terminated by -newlines unless <b>−-null</b> is specified. Note that -<b>−-null</b> also disables the special handling of -lines containing ‘‘-C’’.</p> - - -<p style="margin-top: 1em" valign="top"><b>−U</b></p> - -<p style="margin-left:20%; margin-top: 1em">(x mode only) -Unlink files before creating them. Without this option, -<b>tar</b> overwrites existing files, which preserves -existing hardlinks. With this option, existing hardlinks -will be broken, as will any symlink that would affect the -location of an extracted file.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-use-compress-program</b> -<i>program</i></p> - -<p style="margin-left:20%;">Pipe the input (in x or t mode) -or the output (in c mode) through <i>program</i> instead of -using the builtin compression support.</p> - - -<p style="margin-top: 1em" valign="top"><b>−v</b></p> - -<p style="margin-left:20%; margin-top: 1em">Produce verbose -output. In create and extract modes, <b>tar</b> will list -each file name as it is read from or written to the archive. -In list mode, <b>tar</b> will produce output similar to that -of ls(1). Additional <b>−v</b> options will provide -additional detail.</p> - - -<p style="margin-top: 1em" valign="top"><b>−-version</b></p> - -<p style="margin-left:20%;">Print version of <b>tar</b> and -<b>libarchive</b>, and exit.</p> - - -<p style="margin-top: 1em" valign="top"><b>−w</b></p> - -<p style="margin-left:20%; margin-top: 1em">Ask for -confirmation for every action.</p> - -<p style="margin-top: 1em" valign="top"><b>−X</b> -<i>filename</i></p> - -<p style="margin-left:20%;">Read a list of exclusion -patterns from the specified file. See <b>−-exclude</b> -for more information about the handling of exclusions.</p> - - -<p style="margin-top: 1em" valign="top"><b>−y</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c mode only) -Compress the resulting archive with bzip2(1). In extract or -list modes, this option is ignored. Note that, unlike other -<b>tar</b> implementations, this implementation recognizes -bzip2 compression automatically when reading archives.</p> - - -<p style="margin-top: 1em" valign="top"><b>−z</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c mode only) -Compress the resulting archive with gzip(1). In extract or -list modes, this option is ignored. Note that, unlike other -<b>tar</b> implementations, this implementation recognizes -gzip compression automatically when reading archives.</p> - - -<p style="margin-top: 1em" valign="top"><b>−Z</b></p> - -<p style="margin-left:20%; margin-top: 1em">(c mode only) -Compress the resulting archive with compress(1). In extract -or list modes, this option is ignored. Note that, unlike -other <b>tar</b> implementations, this implementation -recognizes compress compression automatically when reading -archives.</p> - - -<p style="margin-top: 1em" valign="top"><b>ENVIRONMENT</b></p> - -<p style="margin-left:8%;">The following environment -variables affect the execution of <b>tar</b>:</p> - -<p style="margin-top: 1em" valign="top">LANG</p> - -<p style="margin-left:25%; margin-top: 1em">The locale to -use. See environ(7) for more information.</p> - -<p style="margin-top: 1em" valign="top">TAPE</p> - -<p style="margin-left:25%; margin-top: 1em">The default -tape device. The <b>−f</b> option overrides this.</p> - -<p style="margin-top: 1em" valign="top">TZ</p> - -<p style="margin-left:25%; margin-top: 1em">The timezone to -use when displaying dates. See environ(7) for more -information.</p> - -<p style="margin-top: 1em" valign="top"><b>FILES</b> <br> -/dev/sa0</p> - -<p style="margin-left:25%; margin-top: 1em">The default -tape device, if not overridden by the TAPE environment -variable or the <b>−f</b> option.</p> - -<p style="margin-top: 1em" valign="top"><b>EXIT -STATUS</b></p> - -<p style="margin-left:8%;">The <b>tar</b> utility -exits 0 on success, and >0 if an error -occurs.</p> - - -<p style="margin-top: 1em" valign="top"><b>EXAMPLES</b></p> - -<p style="margin-left:8%;">The following creates a new -archive called <i>file.tar.gz</i> that contains two files -<i>source.c</i> and <i>source.h</i>:</p> - -<p style="margin-left:17%;"><b>tar −czf</b> -<i>file.tar.gz source.c source.h</i></p> - -<p style="margin-left:8%; margin-top: 1em">To view a -detailed table of contents for this archive:</p> - -<p style="margin-left:17%;"><b>tar −tvf</b> -<i>file.tar.gz</i></p> - -<p style="margin-left:8%; margin-top: 1em">To extract all -entries from the archive on the default tape drive:</p> - -<p style="margin-left:17%;"><b>tar −x</b></p> - -<p style="margin-left:8%; margin-top: 1em">To examine the -contents of an ISO 9660 cdrom image:</p> - -<p style="margin-left:17%;"><b>tar −tf</b> -<i>image.iso</i></p> - -<p style="margin-left:8%; margin-top: 1em">To move file -hierarchies, invoke <b>tar</b> as</p> - -<p style="margin-left:17%;"><b>tar −cf</b> <i>-</i> -<b>−C</b> <i>srcdir .</i> | <b>tar −xpf</b> -<i>-</i> <b>−C</b> <i>destdir</i></p> - -<p style="margin-left:8%;">or more traditionally</p> - -<p style="margin-left:17%;">cd srcdir ; <b>tar -−cf</b> <i>- .</i> | (<i>cd destdir ;</i> <b>tar -−xpf</b> <i>-</i>)</p> - -<p style="margin-left:8%; margin-top: 1em">In create mode, -the list of files and directories to be archived can also -include directory change instructions of the form -<b>-C</b><i>foo/baz</i> and archive inclusions of the form -<b>@</b><i>archive-file</i>. For example, the command -line</p> - -<p style="margin-left:17%;"><b>tar −c −f</b> -<i>new.tar foo1</i> <b>@</b><i>old.tgz</i> <b>-C</b><i>/tmp -foo2</i></p> - -<p style="margin-left:8%;">will create a new archive -<i>new.tar</i>. <b>tar</b> will read the file <i>foo1</i> -from the current directory and add it to the output archive. -It will then read each entry from <i>old.tgz</i> and add -those entries to the output archive. Finally, it will switch -to the <i>/tmp</i> directory and add <i>foo2</i> to the -output archive.</p> - -<p style="margin-left:8%; margin-top: 1em">An input file in -mtree(5) format can be used to create an output archive with -arbitrary ownership, permissions, or names that differ from -existing data on disk:</p> - -<p style="margin-left:17%; margin-top: 1em">$ cat -input.mtree <br> -#mtree <br> -usr/bin uid=0 gid=0 mode=0755 type=dir <br> -usr/bin/ls uid=0 gid=0 mode=0755 type=file content=myls <br> -$ tar -cvf output.tar @input.mtree</p> - -<p style="margin-left:8%; margin-top: 1em">The -<b>−-newer</b> and <b>−-newer-mtime</b> switches -accept a variety of common date and time specifications, -including ‘‘12 Mar 2005 7:14:29pm’’, -‘‘2005-03-12 19:14’’, -‘‘5 minutes ago’’, and -‘‘19:14 PST May 1’’.</p> - -<p style="margin-left:8%; margin-top: 1em">The -<b>−-options</b> argument can be used to control -various details of archive generation or reading. For -example, you can generate mtree output which only contains -<b>type</b>, <b>time</b>, and <b>uid</b> keywords:</p> - -<p style="margin-left:17%;"><b>tar −cf</b> -<i>file.tar</i> <b>−-format=mtree -−-options=’!all,type,time,uid’</b> -<i>dir</i></p> - -<p style="margin-left:8%;">or you can set the compression -level used by gzip or xz compression:</p> - -<p style="margin-left:17%;"><b>tar −czf</b> -<i>file.tar</i> -<b>−-options=’compression-level=9’</b>.</p> - -<p style="margin-left:8%;">For more details, see the -explanation of the <b>archive_read_set_options</b>() and -<b>archive_write_set_options</b>() API calls that are -described in archive_read(3) and archive_write(3).</p> - - -<p style="margin-top: 1em" valign="top"><b>COMPATIBILITY</b></p> - -<p style="margin-left:8%;">The bundled-arguments format is -supported for compatibility with historic implementations. -It consists of an initial word (with no leading - character) -in which each character indicates an option. Arguments -follow as separate words. The order of the arguments must -match the order of the corresponding characters in the -bundled command word. For example,</p> - -<p style="margin-left:17%;"><b>tar tbf 32</b> -<i>file.tar</i></p> - -<p style="margin-left:8%;">specifies three flags <b>t</b>, -<b>b</b>, and <b>f</b>. The <b>b</b> and <b>f</b> flags both -require arguments, so there must be two additional items on -the command line. The <i>32</i> is the argument to the -<b>b</b> flag, and <i>file.tar</i> is the argument to the -<b>f</b> flag.</p> - -<p style="margin-left:8%; margin-top: 1em">The mode options -c, r, t, u, and x and the options b, f, l, m, o, v, and w -comply with SUSv2.</p> - -<p style="margin-left:8%; margin-top: 1em">For maximum -portability, scripts that invoke <b>tar</b> should use the -bundled-argument format above, should limit themselves to -the <b>c</b>, <b>t</b>, and <b>x</b> modes, and the -<b>b</b>, <b>f</b>, <b>m</b>, <b>v</b>, and <b>w</b> -options.</p> - -<p style="margin-left:8%; margin-top: 1em">Additional long -options are provided to improve compatibility with other tar -implementations.</p> - - -<p style="margin-top: 1em" valign="top"><b>SECURITY</b></p> - -<p style="margin-left:8%;">Certain security issues are -common to many archiving programs, including <b>tar</b>. In -particular, carefully-crafted archives can request that -<b>tar</b> extract files to locations outside of the target -directory. This can potentially be used to cause unwitting -users to overwrite files they did not intend to overwrite. -If the archive is being extracted by the superuser, any file -on the system can potentially be overwritten. There are -three ways this can happen. Although <b>tar</b> has -mechanisms to protect against each one, savvy users should -be aware of the implications:</p> - -<p style="margin-top: 1em" valign="top"><b>•</b></p> - -<p style="margin-left:20%;">Archive entries can have -absolute pathnames. By default, <b>tar</b> removes the -leading <i>/</i> character from filenames before restoring -them to guard against this problem.</p> - -<p style="margin-top: 1em" valign="top"><b>•</b></p> - -<p style="margin-left:20%;">Archive entries can have -pathnames that include <i>..</i> components. By default, -<b>tar</b> will not extract files containing <i>..</i> -components in their pathname.</p> - -<p style="margin-top: 1em" valign="top"><b>•</b></p> - -<p style="margin-left:20%;">Archive entries can exploit -symbolic links to restore files to other directories. An -archive can restore a symbolic link to another directory, -then use that link to restore a file into that directory. To -guard against this, <b>tar</b> checks each extracted path -for symlinks. If the final path element is a symlink, it -will be removed and replaced with the archive entry. If -<b>−U</b> is specified, any intermediate symlink will -also be unconditionally removed. If neither <b>−U</b> -nor <b>−P</b> is specified, <b>tar</b> will refuse to -extract the entry.</p> - -<p style="margin-left:8%;">To protect yourself, you should -be wary of any archives that come from untrusted sources. -You should examine the contents of an archive with</p> - -<p style="margin-left:17%;"><b>tar −tf</b> -<i>filename</i></p> - -<p style="margin-left:8%;">before extraction. You should -use the <b>−k</b> option to ensure that <b>tar</b> -will not overwrite any existing files or the <b>−U</b> -option to remove any pre-existing files. You should -generally not extract archives while running with super-user -privileges. Note that the <b>−P</b> option to -<b>tar</b> disables the security checks above and allows you -to extract an archive while preserving any absolute -pathnames, <i>..</i> components, or symlinks to other -directories.</p> - -<p style="margin-top: 1em" valign="top"><b>SEE ALSO</b></p> - -<p style="margin-left:8%;">bzip2(1), compress(1), cpio(1), -gzip(1), mt(1), pax(1), shar(1), libarchive(3), -libarchive-formats(5), tar(5)</p> - - -<p style="margin-top: 1em" valign="top"><b>STANDARDS</b></p> - -<p style="margin-left:8%;">There is no current POSIX -standard for the tar command; it appeared in ISO/IEC -9945-1:1996 (‘‘POSIX.1’’) but was -dropped from IEEE Std 1003.1-2001 -(‘‘POSIX.1’’). The options used by -this implementation were developed by surveying a number of -existing tar implementations as well as the old POSIX -specification for tar and the current POSIX specification -for pax.</p> - -<p style="margin-left:8%; margin-top: 1em">The ustar and -pax interchange file formats are defined by IEEE Std -1003.1-2001 (‘‘POSIX.1’’) for the -pax command.</p> - -<p style="margin-top: 1em" valign="top"><b>HISTORY</b></p> - -<p style="margin-left:8%;">A <b>tar</b> command appeared in -Seventh Edition Unix, which was released in January, 1979. -There have been numerous other implementations, many of -which extended the file format. John Gilmore’s -<b>pdtar</b> public-domain implementation (circa November, -1987) was quite influential, and formed the basis of GNU -tar. GNU tar was included as the standard system tar in -FreeBSD beginning with FreeBSD 1.0.</p> - -<p style="margin-left:8%; margin-top: 1em">This is a -complete re-implementation based on the libarchive(3) -library.</p> - -<p style="margin-top: 1em" valign="top"><b>BUGS</b></p> - -<p style="margin-left:8%;">This program follows ISO/IEC -9945-1:1996 (‘‘POSIX.1’’) for the -definition of the <b>−l</b> option. Note that GNU tar -prior to version 1.15 treated <b>−l</b> as a synonym -for the <b>−-one-file-system</b> option.</p> - -<p style="margin-left:8%; margin-top: 1em">The -<b>−C</b> <i>dir</i> option may differ from historic -implementations.</p> - -<p style="margin-left:8%; margin-top: 1em">All archive -output is written in correctly-sized blocks, even if the -output is being compressed. Whether or not the last output -block is padded to a full block size varies depending on the -format and the output device. For tar and cpio formats, the -last block of output is padded to a full block size if the -output is being written to standard output or to a character -or block device such as a tape drive. If the output is being -written to a regular file, the last block will not be -padded. Many compressors, including gzip(1) and bzip2(1), -complain about the null padding when decompressing an -archive created by <b>tar</b>, although they still extract -it correctly.</p> - -<p style="margin-left:8%; margin-top: 1em">The compression -and decompression is implemented internally, so there may be -insignificant differences between the compressed output -generated by</p> - -<p style="margin-left:17%;"><b>tar −czf</b> <i>- -file</i></p> - -<p style="margin-left:8%;">and that generated by</p> - -<p style="margin-left:17%;"><b>tar −cf</b> <i>- -file</i> | <b>gzip</b></p> - -<p style="margin-left:8%; margin-top: 1em">The default -should be to read and write archives to the standard I/O -paths, but tradition (and POSIX) dictates otherwise.</p> - -<p style="margin-left:8%; margin-top: 1em">The <b>r</b> and -<b>u</b> modes require that the archive be uncompressed and -located in a regular file on disk. Other archives can be -modified using <b>c</b> mode with the <i>@archive-file</i> -extension.</p> - -<p style="margin-left:8%; margin-top: 1em">To archive a -file called <i>@foo</i> or <i>-foo</i> you must specify it -as <i>./@foo</i> or <i>./-foo</i>, respectively.</p> - -<p style="margin-left:8%; margin-top: 1em">In create mode, -a leading <i>./</i> is always removed. A leading <i>/</i> is -stripped unless the <b>−P</b> option is specified.</p> - -<p style="margin-left:8%; margin-top: 1em">There needs to -be better support for file selection on both create and -extract.</p> - -<p style="margin-left:8%; margin-top: 1em">There is not yet -any support for multi-volume archives or for archiving -sparse files.</p> - -<p style="margin-left:8%; margin-top: 1em">Converting -between dissimilar archive formats (such as tar and cpio) -using the <b>@</b><i>-</i> convention can cause hard link -information to be lost. (This is a consequence of the -incompatible ways that different archive formats store -hardlink information.)</p> - -<p style="margin-left:8%; margin-top: 1em">There are -alternative long options for many of the short options that -are deliberately not documented.</p> - - -<p style="margin-left:8%; margin-top: 1em">FreeBSD 8.0 -Oct 12, 2009 FreeBSD 8.0</p> -<hr> -</body> -</html> |