Mac OS X Manual Page For manpages (5) MANUAL PAGES (5) BSD File Formats Manual MANUAL PAGES (5) NAME manpages - An introduction to manual pages DESCRIPTION Manual pages (often shortened to 'man pages') are a means of providing documentation on the command line. This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles. “The white man knows how to make everything but he does not know how to distribute it” - Sitting Bull. Related macOS commands: cpio - Copy files to and from archives. Dd - Data Duplicator - convert and copy a file. Ditto - copy files and folders (Can preserve Apple resource forks, type & creator). Install - Copy files and set attributes.

The options specific to NFS filesystems are described in the mountnfs(8) manual page. The mount command calls the mount(2) system call to prepare and graft a special device or the remote node (rhost:path) on to the file system tree at the point node. Since files using HFS+ compression are not readable on versions of Mac OS X earlier than 10.6, this flag should not be used when dealing with non-system files or other user-generated content that will be used on a version of Mac OS X earlier than 10.6.

Create, add files to, or extract files from an archive file in gnutar format, called a tarfile. Tape ARchiver; manipulate 'tar' archive files.

tar 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.
The first synopsis form shows a 'bundled' option word. This usage is provided for compatibility with historical implementations. See COMPATIBILITY below for details.

In -c, -r, or -u 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.
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).

Environment

The following environment variables affect the execution of tar:

LANG The locale to use. See environ(7) for more information.
TZ The timezone to use when displaying dates. See environ(7) for more information.

Exit Status

The tar utility exits 0 on success, and >0 if an error occurs.

Examples

To tar and zip a file

To view a detailed table of contents for this archive:

To tar a folder (with all sub-folders and files)

The reverse process to extract the file

Extract a file, autodetecting the format, in this case an xz archive:

To extract all the C sources and headers from an archive named backup.tar:

Note that the pattern must be quoted to prevent the shell from attempting to expand it according the files in the current working directory (the shell does not have access to the list of files in the archive, of course).
To move file hierarchies, use a command line like this:

To create a compressed archive on diskette, using gzip(1), use a command-line like:

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Note that you cannot mix bundled flags and --style flags; you can use single-letter flags in the manner above, rather than having to type tar --block-compress --gzip --verbose --file /dev/fd1a --block-size 20 tar/
The above-created diskette can be listed with
tar tvfbz /dev/fd1a 36

To join two gnutar archives into a single archive, use

tar Af archive1.tar archive2.tar

which will add the files contained in archive2.tar onto the end of
archive1.tar (note that this can't be done by typing:

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cat archive2.tar >> archive1.tar

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because of the end-of-file block at the end of a gnutar archive).
To archive all files from the directory srcdir, which were modified after
Feb. 9th 1997, 13:00 h, use

Notes

Always tar -t before tar -x to check if the archive contents have been placed inside one subdirectory or will just spill all over the current directory.

The -C feature does not work like historical gnutar programs, and is probably untrustworthy.

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The -A command should work to join an arbitrary number of gnutar archives together, but it does not; attempting to do so leaves the end-of-archive blocks in place for the second and subsequent archives.

The gnutar file format is a semi fixed width field format, and the field for device numbers were designed for 16 bit (8 major, 8 minor) and can not absorb our 32 bit (8 major, 16+8 minor) numbers.

Environment Variables

'To disarm the bomb simply enter a valid tar command on your first try. No Googling' ~ XKCD

Related macOS commands:

Black glass enhanced v0.5 user. bzip2(1)
cpio - Copy files to and from archives.
compress - compress and expand data.
gzip - Compress or decompress files.
pax(1)
rmt - remote magtape protocol module.
info tar
Equivalent Windows command: TAR - Store, list or extract files in an archive.

mount a file system
All files accessible in a Unix system are arranged in one big tree, the file hierarchy, rooted at /. These files can be spread out over several devices. The mount command serves to attach the file system found on some device to the big file tree.
The system maintains a list of currently mounted file systems. If no arguments are given to mount, this list is printed.

The mount command calls the mount(2) system call to prepare and graft a special device or the remote node (rhost:path) on to the file system tree at the point node. If either special or node are not provided, the appropriate information is taken from the fstab(5) file.
“The Ten Commandments and the Sermon on the Mount contain my religion” ~ John Adams