tardy - Online in the Cloud

PROGRAM:

NAME

tardy - a tar post-processor

SYNOPSIS

tardy [ option... ][ infile [ outfile ]]
tardy -Help
tardy -VERSion

DESCRIPTION

The tardy program is used to manipulate the file headers within archive files. Supported
archive formats include tar(1), cpio(1) and ar(1).

This is useful when preparing sources for Internet archive sites, and you don't want to
included details of your development environment in the tar(1) file.

One of the most useful features is the ability to add a prefix to the names of the files
within the tar(1) file. An example is adding the prefix ".", for when you have a tar(1)
file with absolute paths in it, and need to extract the file with relative paths.

The GNU tar format headers are understood, including extended names.

If no input file is named, or the special name "-" is used, input will be read from the
standard input. Similarly, if no output file is named, or the special name "-" is used,
output will be written to the standard output. Note that tardy will refuse to read from
or write to a terminal, as this indicates that the user has made a mistake.

If the input is in gzip(1) format, it will be automatically gunzip(1)ed before processing.
Similarly, if the output file name indicates that gzip(1) should be used, this will be
done automatically on output.

OPTIONS

The following options are understood:

-Block_Size number
This option many be used to specify the block size, as a multiple of 512 bytes.
The default is -bs=20 resulting in a 10kB block size.

-Clean_Meta
This option may be used to ensure that file names do not contain shell meta
characters. If any are found, they are replaced by a hyphen (-) character.
Warning: duplicate file names may result.

-Clean_Print
This option may be used to ensure that file names only contain printable ASCII
characters. If any non-printable characters are found, they are replaced by a
hyphen (-) character. Warning: duplicate file names may result.

-Clean_Space
This option may be used to ensure that file names contain no white space
characters. If any are found, they are replaced by a hyphen (-) character.
Warning: duplicate file names may result.

-Clean
This option is a terse way of specifying all of the above 3 options.

-DownCase
This option may be used to force file names to be all lower case. Warning:
duplicate file names may result.

-EXclude pattern
This option may be used to completely remove files from the archive. All files
that have a filename patching the given shell filename pattern will be removed.
Be careful with wild cards, they match everything, including slash (/) characters.
The exclude pattern is applied before all file-name manipulating patterns.

-eXtract
This option may be used to extract the contents of an archive.

-Group arg
This option may be used to set both the group name and group number fields in the
header of every file in the archive file. The argument may be either a string or
a number. It is an error if a corresponding entry cannot be found in the
/etc/group file.

-Group_NAme string
This option is used to set the group name field in the header of every file in the
archive file. The string may be any arbitrary string, it is not restricted to a
known group.

-Group_NAme number
This option is used to set the group name field in the header of every file in the
archive file. The number is mapped to a group name through the /etc/group file.
It is an error if a corresponding group cannot be found.

-Group_NUmber string
This option is used to set the group number field in the header of every file in
the archive file. The string is mapped to a group number through the /etc/group
file. It is an error if a corresponding group cannot be found.

-Group_NUmber number
This option is used to set the group number field in the header of every file in
the archive file. The number may be any arbitrary number, it is not restricted to
a known group.

-Help
This option may be used to obtain more information about how to use the tardy
program.

-Input_ForMaT name
By default, the input file is examined to automatically detect the input archive
file's format. This option may be used to specify the input format to be used.
The input format names are

tar This format understands all of the various tar(1) formats. This is the
default.

tar-bsd This format expects BSD tar(1) archives.

ustar This format expects ustar(1) format archives.

list The input is a text file which contains one file name per line. The named
files are read as if they were the input. It is common for find(1) to be
used to form the list of file names.

directory
The input is a text file which contains one file name per line. The named
files are read as if they were an archive input. If any directories are
found, they will be descended recursively.

cpio The file is expected to be in one of the cpio(5) formats, and will be
examined to figure out which.

cpio-bin
This format expects cpio(5) “old binary” format archives.

cpio-crc
This format expects cpio(5) “crc” format archives.

cpio-new-ascii
This format expects cpio(5) “new ascii” format archives.

cpio-old-ascii
This format expects cpio(5) “old ascii” format archives.

ar The file is expected to be in one of the ar(1) formats, and will be
examined to figure out which.

ar-bsd This format expects ar(1) “BSD” format archives.

ar-pdp11
This format expects ar(1) archives, in the ancient pre-V7 format.

ar-v7 This format expects ar(1) “Unix Version 7” format archives.

Any other format name will produce an error.

-List
Give a terse listing of the file headers on the standard error as they are written
to the output.

-Mode_Clear bits
This option may be used to set the mode of each file in the archive file. The
bits specified are cleared in the mode. You should use an octal number with a
leading zero as the argument; if you omit the leading zero it will be interpreted
as decimal. The -Mode_Set option is applied first, the -Mode_Clear option is
applied second; if neither is specified the mode of each file is unaltered.

-Mode_Set bits
This option may be used to set the mode of each file in the archive file. The
bits specified are set in the mode. You should use an octal number with a leading
zero as the argument; if you omit the leading zero it will be interpreted as
decimal.

-No_Directories
This option may be used to suppress directories from the output. This can be
useful when the archive has been created with directories in useless modes.

-Now
Set the last-time-modified field of the headers to the current time, all files
will be given the same time.

-Old_Type
By default, tardy corrects the old normal file type into the modern normal file
type. This option requests that old normal file type indicators remain unaltered.

-Output_ForMaT name
By default, tardy tries to write the same format on output as it sees on input.
This option may be used to specify the output format to be used. The output
format names are

ar The archive will be written using the ar(1) format, BSD variant. Note
that this format only supports simple files; it silently discards
directories, and even discards directory portions of file names.

ar-bsd The archive will be written using the ar(1) format, BSD variant. Long
file names are handled by a special file at the start of the archive full
of file names.

ar-bsd-l2
The archive will be written using the ar(1) format, BSD variant. Long
file names are handled by special file name mangling in the archive, with
the actual file name transparently injected into the start of the file
data.

ar-pdp11
The archive will be written using the ar(1) format, in the most ancient
pre-V7 variant. (There are also ar-pdp11-le and ar-pdp11-le names, if you
need to select the byte order.)

ar-port5
The archive will be written using the ar(1) format, in the PORT5 variant.
(There are also ar-port5-le and ar-port5-le names, if you need to select
the byte order.)

ar-v7 The archive will be written using the ar(1) format, ancient Unix Version 7
variant. (There are also ar-v7-le and

posix The format that GNU tar uses.

tar-bsd The format that BSD tar(1) uses.

cpio The new cpio(5) ASCII format.

cpio-bin
The cpio(5) "old binary" format, using host byte order.

cpio-bin-le
The cpio(5) "old binary" format, using little-endian byte order.

cpio-bin-be
The cpio(5) "old binary" format, using big-endian byte order.

cpio-crc
The cpio(5) "crc ascii" format.

cpio-old-ascii
The old cpio(5) ASCII format.

ustar This is the format that Joerg Schilling's ustar(1) uses.

v7 The ancient UNIX V7 tar(1) format.

Any other format name will produce an error.

-Prefix string
This option is used to add a prefix directory name to the name of every file in
the archive file.

-PROgress
This option is used to obtain a progress indicator. Only works in combination
with the --ifmt=list option.

-Remove_Prefix number
This option is used to remove a number of leading directories from the name of
every file in the archive file, if present. The prefixes will be removed before
any prefix specified by the -Prefix option is prepended.

-Remove_Prefix string
This option is used to remove a prefix directory name from the name of every file
in the archive file, if present. This option may be given more than once, and as
many of the prefixes as appear will be removed. The prefixes will be removed
before any prefix specified by the -Prefix option is prepended.

This option is potentially ambiguous with the preceding option, if you wish to
remove a leading prefix which looks like a number. If this is the case, add a
slash ("/") to the end of the prefix to stop it looking like a number.

-UpCase
This option may be used to force file names to be all upper case. Warning:
duplicate file names may result.

-User arg
This option may be used to set both the user name and user number fields in the
header of every file in the archive file. The argument may be either a string or
a number. It is an error if a corresponding entry cannot be found in the
/etc/passwd file.

-User_NAme string
This option is used to set the user name field in the header of every file in the
archive file. The string may be any arbitrary string, it is not restricted to a
known user.

-User_NAme number
This option is used to set the user name field in the header of every file in the
archive file. The number is mapped to a user name through the /etc/passwd file.
It is an error if a corresponding user cannot be found.

-User_NUmber string
This option is used to set the user number field in the header of every file in
the archive file. The string is mapped to a user number through the /etc/passwd
file. It is an error if a corresponding user cannot be found.

-User_NUmber number
This option is used to set the user number field in the header of every file in
the archive file. The number may be any arbitrary number, it is not restricted to
a known user.

-VERSion
Print the version of the tardy program being executed.

EXIT STATUS

The tardy command will exit with a status of 1 on any error. The tardy
command will only exit with a status of 0 if there are no errors.

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