NAME¶
comprez - safely (un)tar and (de)feather files and directories
SYNOPSIS¶
comprez [
-t |
-T ] [
-v |
-V ] [
-l |
-L ] [
-gz |
-z |
-I |
-lz |
-Z |
-zip |
-jar ] [
-# ] [
-s suffix ] [
-m mode ] [
-p |
-P ] [
-h ] [
-- ]
file ...
DESCRIPTION¶
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.
OPTIONS¶
- --
- 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 chown(2).
- -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 synonym.
- -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.
ENVIRONMENT VARIABLES¶
- 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 line.
- GZIP
- This environment variable for gzip(1) is not passed on by
comprez so that gzip's behavior is standard and
predictable.
- ZIPOPT, UNZIP
- These environment variables for zip(1) and unzip(1) are
not passed on by comprez so that their behavior is standard
and predictable.
BUGS¶
There should be an option to allow the use of another directory for temporary
files needed during the (un)tarring and (de)feathering processes. This would
make
comprez more useful when the quota or disk is nearly full.
There should be
-k and
-K options for keeping the original input
files or not.
CAVEATS¶
Comprez is written to work with
gzip versions 1.2.3 and 1.2.4,
bzip2 versions 0.9.0 and 1.0.0, Unix
zip version 2.0.1 and Unix
unzip version 5.12. Other versions will probably work safely, too, but
should still be checked for compatibility.
Every effort has been made to assure that the use of this program will not lead
to the inappropriate deletion or corruption of any files. However, there are
never any guarantees, so please use at your own risk.
VERSION¶
2.6.1
AUTHOR¶
Steve Kinzler, kinzler@cs.indiana.edu, May 89/Jun 93/Aug 99/Dec 00
URL¶
http://www.cs.indiana.edu/~kinzler/z
SEE ALSO¶
compress(1),
uncompress(1),
gzip(1),
bzip2(1), lzip(1),
tar(1),
zip(1),
unzip(1)