Full Discussion: tar archive with .Z files
Top Forums UNIX for Dummies Questions & Answers tar archive with .Z files Post 80269 by Unbeliever on Friday 5th of August 2005 03:41:09 AM
find <dirname> -name \*.Z -exec uncompress {} \;

Where <dirname> is the top level of where all your compressed files are.

If you dont have access to find then its possible to do it quickly using the same basic command for each level of dir present.

uncompress *.Z
uncompress */*.Z
uncompress */*/*.Z
etc ...

Otherwise you need a lslightly awkward shell script to recurse into and uncompress all the files.
 
Test Your Knowledge in Computers #13
Difficulty: Easy
EBCDIC, ASCII, SIXBIT, and ANSI are methods for encoding text characters on a computer.
True or False?

10 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

deleting files after the creation of a tar archive

Hi, I would modify to delete the files after creating the tar archive. How I can modify the following command: tar -cvvf logswitch.tar `find *.log* -mtime +5` It create a tar with files that are older than 5 days. (5 Replies)
Discussion started by: Minguccio75
5 Replies

2. UNIX for Dummies Questions & Answers

Archive (tar)

Hi, I want to archive below directories ex: /home/oracle/ddd0 /home/oracle/ddd1 /home/oracle/ddd2 I want a command(tar) which will let me archive the above directories excluding *.dmp(dump files), *.log(log files) in those directories. So the archived file doesn't have... (4 Replies)
Discussion started by: dreams5617
4 Replies

3. UNIX for Dummies Questions & Answers

Q: tar archive help

hey how do you create a archive and add file to an existing archive. i keep getting an error: dir/#: No such file or directory currently using tar -cvfu name.tar files files searching from a word document each line having different file extention. Thanks in advance (1 Reply)
Discussion started by: nookie
1 Replies

4. UNIX for Dummies Questions & Answers

tar archive with including specific patern files

Hi, I need to create recursive tar archive, while I put there only files of type a*.txt. Without file filtering the command is: tar cfzf test.tar.gz test_tar/ How I include the switch for including only files with pattern a*.txt ? Thanks a lot! (1 Reply)
Discussion started by: john.gelburg
1 Replies

5. UNIX for Dummies Questions & Answers

Count number of compressed files in a tar.gz archive

Hi Folks, I have a tar.gz compressed file with me, and I want to know the number of files in the archive without uncompressing it. Please let me know how I can achieve it. Regards RK Veluvali (5 Replies)
Discussion started by: vrk1219
5 Replies

6. Shell Programming and Scripting

Archive::Tar problem

Hello, I have a problem using Archive::Tar. it seem very trivial but i cannot get it work. First I have a list of files I grab from a directory. Then I create a tar archive and write the files into the archive. everything works great, except that I cannot properly extract the files. What... (0 Replies)
Discussion started by: amcrisan
0 Replies

7. Linux

tar archive

I have made tar archive of my system.. How can I make that tar archive to be bootable.. simply to install new linux from the archived tar file.. thanks in advance (8 Replies)
Discussion started by: Vit0_Corleone
8 Replies

8. Solaris

USTAR tar archive

Hello Admins, I am facing an issue with ustar tar archive on solaris 10. By mistake I have created ustar tar archive of /var/adm/messages file on solaris10. I am trying to untar the /var/adm/messages file . but I am not getting the original text messages file. I user tar -xvf ... (4 Replies)
Discussion started by: snchaudhari2
4 Replies

9. UNIX for Dummies Questions & Answers

Remove files from tar archive which are more than 1000 days old.

I am not able to extract/remove files older than 1000 days from a tar archive in linux system. #!/usr/bin/perl @file_list = `find /home/x/tmp/ -name *xxMsg* -ctime +7`; $file_name = '/home/x/tmp/new_archive.tar'; for... (1 Reply)
Discussion started by: DannyV
1 Replies

10. UNIX for Dummies Questions & Answers

Help with number of files in a tar archive

I cant seem to work out how to count the number of executable files in a particular tar archive? Only in a directory as a whole. I also cant work out how to count number of certain file types in a tar archive. Only the directory, pretty stuck :( (9 Replies)
Discussion started by: Razor147
9 Replies
compress(1)							   User Commands						       compress(1)

NAME
compress, uncompress, zcat - compress, uncompress files or display expanded files SYNOPSIS
compress [-fv] [-b bits] [file...] compress [-cfv] [-b bits] [file] uncompress [-cfv] [file...] zcat [file...] DESCRIPTION
compress The compress utility will attempt to reduce the size of the named files by using adaptive Lempel-Ziv coding. Except when the output is to the standard output, each file will be replaced by one with the extension .Z, while keeping the same ownership modes, change times and mod- ification times. If appending the .Z to the file pathname would make the pathname exceed 1023 bytes, the command will fail. If no files are specified, the standard input will be compressed to the standard output. The amount of compression obtained depends on the size of the input, the number of bits per code, and the distribution of common sub- strings. Typically, text such as source code or English is reduced by 50-60%. Compression is generally much better than that achieved by Huffman coding (as used in pack(1)) and it takes less time to compute. The bits parameter specified during compression is encoded within the compressed file, along with a magic number to ensure that neither decompression of random data nor recompression of compressed data is subsequently allowed. uncompress The uncompress utility will restore files to their original state after they have been compressed using the compress utility. If no files are specified, the standard input will be uncompressed to the standard output. This utility supports the uncompressing of any files produced by compress. For files produced by compress on other systems, uncompress sup- ports 9- to 16-bit compression (see -b). zcat The zcat utility will write to standard output the uncompressed form of files that have been compressed using compress. It is the equiva- lent of uncompress -c. Input files are not affected. OPTIONS
The following options are supported: -c Writes to the standard output; no files are changed and no .Z files are created. The behavior of zcat is identical to that of `uncompress -c'. -f When compressing, forces compression of file, even if it does not actually reduce the size of the file, or if the corresponding file.Z file already exists. If the -f option is not given, and the process is not running in the background, prompts to verify whether an existing file.Z file should be overwritten. When uncompressing, does not prompt for overwriting files. If the -f option is not given, and the process is not running in the background, prompts to verify whether an existing file should be over- written. If the standard input is not a terminal and -f is not given, writes a diagnostic message to standard error and exits with a status greater than 0. -v Verbose. Writes to standard error messages concerning the percentage reduction or expansion of each file. -b bits Sets the upper limit (in bits) for common substring codes. bits must be between 9 and 16 (16 is the default). Lowering the number of bits will result in larger, less compressed files. OPERANDS
The following operand is supported: file A path name of a file to be compressed by compress, uncompressed by uncompress, or whose uncompressed form is written to standard out by zcat. If file is -, or if no file is specified, the standard input will be used. USAGE
See largefile(5) for the description of the behavior of compress, uncompress, and zcat when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of compress, uncompress, and zcat: LANG, LC_ALL, LC_CTYPE, LC_MESSAGES, and NLSPATH. EXIT STATUS
The following error values are returned: 0 Successful completion. 1 An error occurred. 2 One or more files were not compressed because they would have increased in size (and the -f option was not specified). >2 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ |CSI |Enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
ln(1), pack(1), attributes(5), environ(5), largefile(5), standards(5) DIAGNOSTICS
Usage: compress [-fvc] [-b maxbits] [file... ] Invalid options were specified on the command line. Missing maxbits Maxbits must follow -b, or invalid maxbits, not a numeric value. file: not in compressed format The file specified to uncompress has not been compressed. file: compressed with xxbits, can only handle yybits file was compressed by a program that could deal with more bits than the compress code on this machine. Recompress the file with smaller bits. file: already has .Z suffix -- no change The file is assumed to be already compressed. Rename the file and try again. file: already exists; do you wish to overwrite (y or n)? Respond y if you want the output file to be replaced; n if not. uncompress: corrupt input A SIGSEGV violation was detected, which usually means that the input file is corrupted. Compression: xx.xx% Percentage of the input saved by compression. (Relevant only for -v.) - - not a regular file: unchanged When the input file is not a regular file, (such as a directory), it is left unaltered. - - has xx other links: unchanged The input file has links; it is left unchanged. See ln(1) for more information. - - file unchanged No savings are achieved by compression. The input remains uncompressed. filename too long to tack on .Z The path name is too long to append the .Z suffix. NOTES
Although compressed files are compatible between machines with large memory, -b 12 should be used for file transfer to architectures with a small process data space (64KB or less). compress should be more flexible about the existence of the .Z suffix. SunOS 5.10 9 Sep 1999 compress(1)

Featured Tech Videos

All times are GMT -4. The time now is 01:40 AM.
Unix & Linux Forums Content Copyright 1993-2020. All Rights Reserved.
Privacy Policy