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comprez - safely (un)tar and (de)feather files and directories


comprez [ -t | -T ] [ -v | -V ] [ -l | -L ] [ -gz | -z | -I | -lz | -Z | -zip | -jar ] [
-# ] [ -s suffix ] [ -m mode ] [ -p | -P ] [ -h ] [ -- ] file ...


Comprez is a simple, safe and convenient front-end for the compress(1), uncompress(1),
gzip(1), bzip2(1), lzip(1), tar(1), zip(1) and unzip(1) utilities for compressing and
uncompressing files and directories. It processes each of its arguments according to the
type of the file or directory given:

If the argument is a plain file, then the file is compressed, ie, feathered.

If the argument is a compressed file with a name ending in .Z, .gz, .z, .bz2, .lz, .zip or
.jar, then the file is uncompressed, ie, defeathered.

If the argument is a directory, then the directory is archived into one tar or zip file
which is then compressed, ie, tarred and feathered.

If the argument is a compressed tar or zip archive with a name ending in
.{tar.,tar,ta,t}{Z,gz,z,bz2,lz} or .{zip,jar}, then the archive is uncompressed and
untarred, ie, untarred and defeathered.

The new compressed or uncompressed version will be in the same directory as the original.
A compressed file is always uncompressed into a file with the same name sans the feather
suffix. A compressed tar or zip archive is always unpacked into a subdirectory with the
same name as the archive sans the tar and feather suffix, even if the archive did not
itself contain such a subdirectory.


-- Interprets all following arguments as files instead of options.

-# Where # is a digit from 1 through 9. This option is passed on to gzip(1),
bzip2(1), lzip(1) and zip(1) when feathering with them. --fast may be used
instead of -1 and --best instead of -9.

-gz Uses gzip(1) and a .gz compression suffix when feathering.

-h Prints a helpful usage message.

-I Uses bzip2(1) and a .bz2 compression suffix when feathering.

-l Lists the file or directory name created resulting from each argument.

-L Does not report created files or directories. Default.

-lz Uses lzip(1) and a .lz compression suffix when feathering.

-m mode Apply the given chmod(1) mode argument to any created tar and feather files.
Before this argument is applied, the files have the same read and write
permissions as the directories from which they were created. For security, the
default argument is go-rwx. If the mode is -, then no argument is applied. See
chmod(1) for all other allowable formats of this argument.

-p Preserves modes when untarring by giving the p flag to tar(1). Default.

-P Doesn't preserve modes when untarring by not giving the p flag to tar(1). This
option may be necessary on systems where ordinary users are allowed to run

-s suffix Creates tar and feather files using the given suffix style. The default suffix
style is .tar.Z. Note that the suffix style does not dictate the program used
for feathering nor the compression suffix.

-t Only lists the table of contents of the given files. Does not make any changes.

-T (Un)tars and (de)feathers the given files according to their type. Default.

-v Verbose output. For example, reports compression ratios when feathering.

-V Non-verbose output. Does not report compression ratios. Default. -q is a

-z Uses gzip(1) and a .z compression suffix when feathering.

-Z Uses compress(1) and a .Z compression suffix when feathering. Default.

-zip, -jar
Uses zip(1) and a .zip or .jar compression suffix when tarring and/or
feathering. The zip format combines tarring and feathering. WARNING: zip does
not preserve complete Unix filesystem information for the files it archives,
such as links, some permissions, etc. A tar(1)-based format should be used if
this is required.


ZOPTS This variable may be set to a string of the above options to supersede the
default settings. They may still be overridden by options given on the command

GZIP This environment variable for gzip(1) is not passed on by comprez so that gzip's
behavior is standard and predictable.

These environment variables for zip(1) and unzip(1) are not passed on by comprez
so that their behavior is standard and predictable.

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