How to unzip a. GZ zip file

how to unzip a. gz zip file

#gzip-D xxx.gz

Tar command
[Root@linux ~]# tar [-cxtzjvfppn] files and directories ....
Parameters:
-C: Create a compressed file parameter directive (the meaning of Create);
-X: Unlocks a parameter directive for a compressed file.
-T: View the files inside the tarfile.
In particular, the c/x/t can only exist in the release of a parameter. Cannot exist simultaneously.
Because it is not possible to compress and decompress simultaneously.
-Z: Whether to have gzip properties at the same time. i.e. whether gzip compression is required.
-J: Whether you have bzip2 properties at the same time. That is, if you need to compress with bzip2.
-V: The file is displayed during compression. This is commonly used, but is not recommended for use in the background execution process.
-F: Use the file name, please note, after F to immediately answer the file name Oh. Do not add arguments.
For example, using "TAR-ZCVFP tfile sfile" is the wrong way to write
"TAR-ZCVPF tfile sfile" was right.
-P: Use original file properties (attributes are not changed according to user)
-P: The absolute path can be used to compress.
-N: Newer than the later date (YYYY/MM/DD) will be packaged into the new file.
--exclude file: Do not package file in the process of compression.
Example:
Example one: Package all the files in the/etc directory into/tmp/etc.tar
[Root@linux ~]# tar-cvf/tmp/etc.tar/etc <== packaged only, not compressed.
[Root@linux ~]# tar-zcvf/tmp/etc.tar.gz/etc <== packaged, compressed with gzip
[Root@linux ~]# tar-jcvf/tmp/etc.tar.bz2/etc <== packed, compressed with bzip2
# Note that the file name after parameter f is taken by yourself, and we are accustomed to using. Tar as a recognition.
# if the z parameter is added, the. tar.gz or. tgz represent the gzip compressed tar file ~
# If you add the J parameter, use. tar.bz2 as the file name.
# When the above instruction is executed, a warning message is displayed:
# "tar:removing leading '/' from member names" That's a special setting for absolute paths.
Example two: Check out which files are in the/tmp/etc.tar.gz file above.
[Root@linux ~]# tar-ztvf/tmp/etc.tar.gz
# because we use gzip compression, so to check the file in the tar file,
# you have to add Z to this parameter. It's very important.

Example three: Extracting the/tmp/etc.tar.gz file under/USR/LOCAL/SRC
[Root@linux ~]# CD/USR/LOCAL/SRC
[Root@linux src]# tar-zxvf/tmp/etc.tar.gz
# in the case of presets, we can unzip the file anywhere. In the case of this example,
# I'm going to transform my working directory under/USR/LOCAL/SRC and untie/tmp/etc.tar.gz,
# then the unpacked catalogue will be in/USR/LOCAL/SRC/ETC. Also, if you enter/USR/LOCAL/SRC/ETC
# you will find that the file attributes in this directory may be different from the/etc/.

Example four: under/tmp, I just want to untie the etc/passwd inside the/tmp/etc.tar.gz.
[Root@linux ~]# Cd/tmp
[Root@linux tmp]# tar-zxvf/tmp/etc.tar.gz etc/passwd
# I can check the file name in the Tarfile through TAR-ZTVF, if only one file,
# you can make it through this way. Notice that. The root directory within the etc.tar.gz/is taken away.

Example five: Back up all files within the/etc/and save their permissions.
[Root@linux ~]# Tar-zxvpf/tmp/etc.tar.gz/etc
# The properties of this-p are important, especially if you want to preserve the properties of the original file.

Example six: In/home, more than 2005/06/01 new files are backed up
[Root@linux ~]# tar-n ' 2005/06/01 '-ZCVF home.tar.gz/home

Example seven: I want to back up/home, etc, but don't/home/dmtsai
[Root@linux ~]# tar--exclude/home/dmtsai-zcvf myfile.tar.gz/home/*/etc

Example eight: The/etc/is packaged and unpacked directly under/TMP without generating a file.
[Root@linux ~]# Cd/tmp
[Root@linux tmp]# TAR-CVF-etc | TAR-XVF-
# This action is a bit like cp-r/etc/tmp ~ still has its use.
Note that the output file becomes-and the input file becomes-and another | exist ~
# This represents the standard output, the standard input, and the pipeline command, respectively.
# This part we'll be talking about this command again in Bash Shell and then we'll explain again.

gzip, Zcat command
[Root@linux ~]# gzip [-cdt#] File name
[Root@linux ~]# zcat file name. gz
Parameters:
-C: The compressed data output to the screen, can be processed through data flow redirection;
-D: the extracted parameters;
-T: can be used to verify the consistency of a compressed file ~ See if there are errors;
-#: Compression level, 1 the fastest, but the worst compression ratio,-9 slowest, but the best compression. The preset is-6 ~
Example:
Example one:/etc/man.config is copied to/TMP and compressed with gzip
[Root@linux ~]# Cd/tmp
[Root@linux tmp]# Cp/etc/man.config.
[Root@linux tmp]# gzip Man.config
# at this time Man.config will become man.config.gz.
Example two: Read the file contents of example one.
[Root@linux tmp]# Zcat man.config.gz
# The contents of the file after man.config.gz decompression will be displayed on the screen.

Example three: Extracting a file from sample one
[Root@linux tmp]# gzip-d man.config.gz

Example four: Man.config with the best compression ratio and retains the original file
[Root@linux tmp]# gzip-9-C man.config > man.config.gz

bzip2, Bzcat command
[Root@linux ~]# bzip2 [-cdz] File name
[Root@linux ~]# bzcat file name. bz2
Parameters:
-C: Outputs the data generated by the compression process to the screen.
-D: decompressed parameters
-Z: Compressed parameters
-#: Same as gzip, all in the calculation of compression ratio parameters,-9 best,-1 fastest.
Example:
Example one: Compress just the/tmp/man.config with bzip2
[Root@linux tmp]# bzip2-z Man.config
# at this time Man.config will become man.config.bz2.
Example two: Read the file contents of example one.
[Root@linux tmp]# Bzcat man.config.bz2
# The contents of the file after man.config.bz2 decompression will be displayed on the screen.

Example three: Extracting a file from sample one
[Root@linux tmp]# bzip2-d man.config.bz2

Example four: Man.config with the best compression ratio and retains the original file
[Root@linux tmp]# bzip2-9-C man.config > man.config.bz2

Compress command
[Root@linux ~]# compress [-DCR] file or directory
Parameters:
-D: Parameters to decompress
-R: It can also be compressed together with the files in the directory.
-C: Output compressed data to standard output (outputs to screen)
Example:
Example one:/etc/man.config is copied to/TMP and compressed
[Root@linux ~]# Cd/tmp
[Root@linux tmp]# Cp/etc/man.config.
[Root@linux tmp]# Compress Man.config
[Root@linux tmp]# Ls-l
-rw-r--r--1 root root 2605 Jul 11:43 man.config.z
Example two: Unlock the zip file you just got
[Root@linux tmp]# compress-d man.config.z

Example three: compressing the man.config into another file to back up
[Root@linux tmp]# compress-c man.config > Man.config.back.z
[Root@linux tmp]# ll man.config*
-rw-r--r--1 root root 4506 Jul 11:43 man.config
-rw-r--r--1 root root 2605 Jul 11:46 man.config.back.z
# The parameters of this-C are more interesting. He will output the data from the compression process to the screen instead of writing it into
# file. Z file. Therefore, we can export the data to another file name through a data flow redirection method.
# for Data flow redirection, we'll talk more about it in bash shell.

DD command
[Root@linux ~]# dd if= "input_file" of= "Outptu_file" bs= "Block_size" \
count= "Number"
Parameters:
If: It is the input file or it can be a device oh.
Of: is output file Oh ~ can also be a device;
BS: Plan the size of a block, if not set, the preset is bytes
Count: How many BS means.
Example:
Example one: Backup/etc/passwd to/tmp/passwd.back
[Root@linux ~]# DD if=/etc/passwd of=/tmp/passwd.back
3+1 Records in
3+1 Records out
[Root@linux ~]# Ll/etc/passwd/tmp/passwd.back
-rw-r--r--1 root root 1746 14:16/etc/passwd
-rw-r--r--1 root root 1746 16:57/tmp/passwd.back
# Take a closer look, my/etc/passwd file size is 1746 bytes, because I didn't set BS,
# So the preset is bytes to a unit, so the above 3+1 says there are 3 complete
# bytes, and the meaning of another block that is not full of bytes.
# In fact, it feels like the CP command ~

Example two: Backing up the/dev/hda MBR
[Root@linux ~]# dd If=/dev/hda of=/tmp/mbr.back bs=512 count=1
1+0 Records in
1+0 Records out
# It's got to be understood # We know the MBR of the whole hard disk is bytes,
# is the first sector on the hard drive, so I can use this way to
# All the information in the MBR is recorded, really very powerful. ^_^

Example three: Back up the entire/DEV/HDA1 partition.
[Root@linux ~]# DD if=/dev/hda1 OF=/SOME/PATH/FILENAEM
# This is a very powerful command. Back up all the content of the entire partition ~
# The latter must not be in the/dev/hda1 of the directory Ah ~ Otherwise, how to read also can not finish ~
# This action is very effective, if you have to complete the whole partition of the contents of a day to fill back,
# You can use DD If=/some/file of=/dev/hda1 to write data to the hard disk.
# If you want an entire hard disk backup, like Norton's Ghost software in general,
# from disk to disk, hehe ~ To use DD can ~ very bad.

Cpio command
[Root@linux ~]# cpio-covb > [file|device] <== Backup
[Root@linux ~]# Cpio-icduv < [file|device] <== Restore
Parameters:
-o: Data copy output to a file or device
-I: Copy data from file or device to system
-T: View the contents of a file or device created by Cpio
-C: A newer portable format mode storage
-V: Allows the file name to be displayed on the screen during storage
-B: Allows the preset Blocks to be increased to 5120 bytes, which is a preset of bytes.
The benefit is that large files can be stored faster (refer to the I-nodes concept)
-D: Automatically create a directory. Because the content of cpio may not be in the same directory,
In this case, there will be a problem with the anti-backup process. Add-D to this time,
You can automatically set up the required directories.
-U: Automatically overwrites newer files with older ones.
Example:
Example one: All data on all systems is written to the tape drive.
[Root@linux ~]# Find/-print | Cpio-covb >/dev/st0
# in general, the tape drive using a SCSI interface, the code name is/dev/st0 Oh.
Example two: Check what files are on the tape drive.
[Root@linux ~]# CPIO-ICDVT </dev/st0
[Root@linux ~]# CPIO-ICDVT </dev/st0 >/tmp/content
# in the first action, the files in the tape drive will be listed on the screen, and we can go through the second action,
# Record all the file names to the/tmp/content files.

Example three: Restore the data on the tape back ~
[Root@linux ~]# Cpio-icduv </dev/st0
# in general, the tape drive using a SCSI interface, the code name is/dev/st0 Oh.

Example four: Back up all "files" under/etc to/root/etc.cpio.
[Root@linux ~]# Find/etc-type F | Cpio-o >/root/etc.cpio
# so you can back it up ~ You may also be able to cpio-i </root/etc.cpio
# to catch the data ....

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Compression and decompression methods of common compression formats under Linux
Date: 2005-01-20 Source: Linuxbyte Author: Linux Enthusiasts
. tar
Unpacking: Tar xvf Filename.tar
Package: Tar cvf filename.tar DirName
(Note: Tar is packaged, not compressed.) ）
---------------------------------------------
. gz
Decompression 1:gunzip filename.gz
Decompression 2:gzip-d filename.gz
Compression: gzip FileName
. tar.gz
Decompression: Tar zxvf FileName.tar.gz
Compression: Tar zcvf FileName.tar.gz DirName
---------------------------------------------
. bz2
Decompression 1:bzip2-d filename.bz2
Decompression 2:BUNZIP2 filename.bz2
Compression: Bzip2-z FileName
. tar.bz2
Decompression: Tar jxvf FileName.tar.bz2
Compression: Tar jcvf FileName.tar.bz2 DirName
---------------------------------------------
. BZ
Decompression 1:bzip2-d filename.bz
Decompression 2:BUNZIP2 filename.bz
Compression: Unknown
. tar.bz
Decompression: Tar jxvf FileName.tar.bz
Compression: Unknown
---------------------------------------------
. Z
Decompression: uncompress filename.z
Compression: Compress FileName
. Tar. Z
Decompression: Tar zxvf filename.tar.z
Compression: Tar zcvf filename.tar.z DirName
---------------------------------------------
. tgz
Decompression: Tar zxvf filename.tgz
Compression: Unknown
. tar.tgz
Decompression: Tar zxvf FileName.tar.tgz
Compression: Tar zcvf FileName.tar.tgz FileName
---------------------------------------------
. zip
Decompression: Unzip Filename.zip
Compression: Zip Filename.zip DirName
---------------------------------------------
. rar
Decompression: rar a Filename.rar
Compression: R ar e filename.rar
RAR please to: http://www.rarsoft.com/download.htm download.
After extracting, copy the rar_static to the/usr/bin directory (other directories specified by the $PATH environment variable are also available):
[ROOT@WWW2 tmp]# CP Rar_static/usr/bin/rar
---------------------------------------------
. Lha
Decompression: Lha-e Filename.lha
Compression: Lha-a Filename.lha FileName
LHA please go to: http://www.infor.kanazawa-it.ac.jp/.../lhaunix/download.
> After unpacking, copy the LHA to the/usr/bin directory (other directories specified by the $PATH environment variable are also available):
[ROOT@WWW2 tmp]# CP lha/usr/bin/
---------------------------------------------
. rpm
Unpacking: Rpm2cpio filename.rpm | Cpio-div
---------------------------------------------
. Tar. tgz. tar.gz. Tar. Z. tar.bz tar.bz2. zip. cpio. rpm. Deb. SLP. Arj. rar. Ace. Lha. Lzh
. lzx. Lzs. Arc. SDA. SFX. Lnx. Zoo. cab. kar. cpt. Pit. Sit. Sea
Decompression: sEx x filename.*
Compression: SEx a filename.* FileName
Sex just calls the relevant program, and itself does not have compression, decompression function, please note.
Sex please to: http://sourceforge.net/projects/sex download.
After unpacking, copy the sex to the/usr/bin directory (other directories specified by the $PATH environment variable are also available):
[ROOT@WWW2 tmp]# CP sex/usr/bin/